JP2003345744A - Web APPLICATION SERVER AND METHOD FOR CONTROLLING JOB PROCESSING - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent job processing of a Web application server side from being adversely affected by a browser operation of a client side in advance. <P>SOLUTION: A request control part 11 compares a client image number in a request with a transition source image number held by a session 20, determines that there is consistency when the client image number is larger than the transition source image number, makes a user interface configuring part 30 perform job processing 31, acquires a transition destination URL from an image transition managing part 12 on the basis of a result code, makes an image constructing part 40 prepare a transition destination image and transmits the transition destination image as a response to the client 2. Meanwhile, the request control part 11 determines that there is no consistency when the client image number is not larger than the transition source image number, obtains a result code of job processing in response to the request from the user interface configuring part 30, makes the image constructing part 40 prepare a transition destination image in a similar manner and transmits the transition destination image as a response to the client 2. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Web application server and a business process control method, and more particularly to a Web system for performing business processes in response to a browser operation on a client side.
b. It relates to an application server and a business process control method thereof.

[0002]

2. Description of the Related Art In a Web application system, various screen transition operations such as reload, back, forward, and stop can be used by a browser function on a client side.

[0003]

These screen transition operations are managed by the browser alone, and are not notified to the Web application server. The Web application server grasps the screen transition state of the browser on the client in the Web application server. , The following problems have occurred.

[0004] The first problem is that when a submit button is pressed on the browser update screen, the W
The data can be registered in the database at the web application server and the screen can be transited to the next screen. When the reload button is pressed here, the status that the submit button of the update screen is pressed again is notified to the web application server, and the database is updated. The same data is registered again,
It means that it becomes double registration.

[0005] The second problem is that when data is registered in the database by the Web application server when the submit button is pressed on the update screen of the browser and the screen transitions to the next screen, the update screen is displayed by pressing the back button. It is possible to return again, but if the submit button is pressed again, the same data is registered again in the database in the Web application server, resulting in double registration.

A third problem is that if the stop button is pressed immediately after the submit button is pressed on the browser update screen, the operation on the browser side stops, but the reload button is pressed to continue the processing here. When the Web
This means that there is a possibility that business processing for the same request is performed twice on the application server side.
If the stop button is pressed after the request for pressing the submit button reaches the web application server, the business process of the web application server is activated and only the browser is stopped. In this case, When the reload button is pressed,
Since the business process of the web application server runs again, double registration of the same data in the database occurs.

The fourth problem is that, in order to solve the first to third problems, usually, data processing is performed in such a manner that there is no problem no matter how many times the same business process is called in each individual business process. This means that it is necessary to develop business processes with security in mind, such as consistency.

An object of the present invention is to utilize a specific function of a screen number which is implicitly updated for a business process developer to prevent the adverse effect on the server-side business process due to the browser operation on the client side. It is an object of the present invention to provide a Web application server and a business process control method that can prevent such a problem.

Another object of the present invention is to provide a user of a Web application system without restricting the operation of a browser (restricting a user from performing screen transition operations such as reload, back, and forward). However, an object of the present invention is to provide a Web application server and a business process control method that allow a user to freely operate a browser without hindering business processes on a client side.

As a prior art document, JP-A-2001-2001
306286, JP-A-5-35828, JP-A-11-
355273 and the like.

A “print job management system and print job management method on a network” disclosed in Japanese Patent Application Laid-Open No. 2001-306286 is directed to printing to a plurality of printers registered in print queues of all print servers existing on the network. Display job information on a single screen, print start command, print stop command,
The present invention enables centralized management of a print job deletion instruction, a print destination printer change instruction, and the like, and has a completely different object, configuration, and effect from the present invention.

A "data transfer device" disclosed in Japanese Patent Application Laid-Open No. 5-35828 displays an output of a card interface as a multi-screen on an external display device and displays a character when transferring data from a memory card to a floppy disk. A serial number is assigned to each of the multi-screens from the generator so that a plurality of screens can be designated and transferred using the ten keys or arrow keys in the operation unit, and the object, configuration and effect are completely different from those of the present invention. .

[0013] Further, the "system and method for assuring notification data by UDP in a network management system" disclosed in Japanese Patent Application Laid-Open No. H11-355273 discloses a method for detecting the occurrence of an event from a network element (NE).
The present invention guarantees the notification data when using the IP protocol, and has completely different objects, configurations and effects from the present invention.

[0014]

A Web application server according to the present invention is a Web application server for performing business processing in response to a browser operation on a client. The Web application server includes a client screen number in a request from a client and a transition source held by a session. Compare with the screen number, if the client screen number is larger than the transition source screen number, determine that there is consistency, execute the business process and send the transition destination screen to the client as a response, while the client screen number transitions A request control unit that determines that there is an inconsistency in the case of the original screen number or less and does not execute the business process is provided.

The Web application server of the present invention is a Web application server that performs business processing in response to a browser operation on a client, and stores a client screen number in a request from the client and a transition destination screen number held by the session. If the client screen number is greater than or equal to the transition destination screen number, it is determined that there is consistency, the business process is executed, and the transition destination screen is transmitted to the client as a response, while the client screen number is less than the transition destination screen number In this case, there is provided a request control unit which does not execute the business process by judging the mismatch.

Further, the Web application server according to the present invention includes a user interface configuration unit for executing a business process and returning a result code, a screen transition management unit for indexing a transition destination URL using the result code as a key, and a transition destination URL.
A screen construction unit that obtains the processing result of the business process from the user interface configuration unit based on the above, creates a transition destination screen, and embeds a transition destination screen number obtained by adding 1 to the transition source screen number held by the session in the transition destination screen. Comparing the client screen number in the request from the client with the transition source screen number held by the session, and when the client screen number is larger than the transition source screen number, determines that there is consistency, and To execute a business process, and based on a result code from the user interface configuration unit, the screen transition management unit transmits a transition destination URL.
While the screen construction unit creates a transition destination screen and sends it to the client as a response.If the client screen number is less than or equal to the transition source screen number, it is determined that there is an inconsistency and the user interface configuration unit determines A request control unit that obtains a result code of the business process for the previous request, obtains a transition destination URL from the screen transition management unit, causes the screen construction unit to create a transition destination screen for the previous request, and transmits the created screen to the client as a response. It is characterized by having.

Still further, the Web application server of the present invention includes a user interface configuration unit for executing business processing and returning a result code, a screen transition management unit for indexing a transition destination URL using the result code as a key, and a transition destination U.
A screen construction unit that obtains a processing result of a business process from the user interface configuration unit based on the RL, creates a transition destination screen, and embeds a transition destination screen number held by a session in the transition destination screen, and a client that is requesting from the client Compare the screen number and the transition destination screen number held by the session, determine that the client screen number is consistent if the client screen number is equal to or greater than the transition destination screen number, and let the user interface component execute business processing, A transition destination URL is acquired from the screen transition management unit based on the result code from the user interface configuration unit, and the screen construction unit creates a transition destination screen and sends it to the client as a response. If the number is less than the screen number, the user interface configuration is determined to be inconsistent Transition destination UR from the screen transition management unit obtains result code of the business process for the previous request from
A request control unit for acquiring L and causing the screen construction unit to create a transition destination screen for the previous request and transmitting the transition destination screen to the client as a response.

On the other hand, the business process control method of the present invention receives a request from a client, compares the client screen number in the request with the transition source screen number held by the session, and determines that the client screen number is the transition source screen. If the client screen number is less than or equal to the transition source screen number, it is judged that there is inconsistency if it is larger than the number. Is returned to the client as a response, and a step of returning, to the client, as a response, a transition destination screen of the business process for the previous request in the case of inconsistency.

The business process control method according to the present invention receives a request from a client, compares the client screen number in the request with the transition destination screen number held by the session, and determines whether the client screen number is the transition destination screen. If the client screen number is less than the transition destination screen number, it is determined that there is an inconsistency, and if the client screen number is less than the transition destination screen number, it is determined that there is inconsistency. It is characterized by including a step of returning to the client as a response, and a step of returning to the client as a response a transition destination screen of the business process corresponding to the previous request when there is an inconsistency.

Further, in the business process control method according to the present invention, a request from a client is received, the client screen number in the request is compared with a transition source screen number held by the session, and the client screen number is changed to the transition source screen. If it is greater than the number, it is determined that there is consistency, and if the client screen number is less than or equal to the transition source screen number, it is determined that there is inconsistency. Returning the result code corresponding to the above, the process of overwriting the transition source screen number held by the session with the client screen number in the request, and the result code corresponding to the processing result of the business process for the previous request if there is inconsistency A transition destination screen is created using the return step and the transition destination URL corresponding to the result code, and a session is set in the transition destination screen. Burying the destination screen number obtained by adding 1 to the transition source screen number down is held, characterized in that it comprises a step of returning to the client the destination screen as a response.

Furthermore, the business process control method of the present invention receives a request from a client, compares the client screen number in the request with the transition destination screen number held by the session, and determines whether the client screen number is the transition destination. A process where it is determined that there is consistency if the screen number is equal to or greater than the screen number, and it is determined that there is inconsistency if the client screen number is less than the transition destination screen number. Returning the result code corresponding to the above, and overwriting the transition destination screen number held by the session with the transition destination screen number obtained by adding 1 to the client screen number in the request, and the business process for the previous request if there is inconsistency Returning a result code corresponding to the processing result of step (a), and creating a transition destination screen using the transition destination URL corresponding to the result code. And characterized in that it comprises a step of filling the destination screen number held by the session to the destination screen, and a step of returning to the client the destination screen as a response.

On the other hand, the program of the present invention receives a request from a client at a computer, compares the client screen number in the request with the transition source screen number held by the session, and changes the client screen number to the transition source screen. If the client screen number is less than or equal to the transition source screen number, it is judged that there is inconsistency if it is larger than the number. Is returned to the client as a response, and a step of returning to the client, as a response, the transition destination screen of the business process for the previous request when the data is inconsistent.

Also, the program of the present invention receives a request from a client, compares the client screen number in the request with the transition destination screen number held by the session, and sets the client screen number to the transition destination screen. If the client screen number is less than the transition destination screen number, it is determined that there is an inconsistency, and if the client screen number is less than the transition destination screen number, it is determined that there is inconsistency. It is characterized by executing a step of returning to the client as a response and a step of returning to the client as a response a transition destination screen of the business process corresponding to the previous request when there is an inconsistency.

Further, the program of the present invention receives a request from a client at a computer, compares the client screen number in the request with the transition source screen number held by the session, and changes the client screen number to the transition source screen. If it is greater than the number, it is determined that there is consistency, and if the client screen number is less than or equal to the transition source screen number, it is determined that there is inconsistency. Returning the result code corresponding to the above, the process of overwriting the transition source screen number held by the session with the client screen number in the request, and the result code corresponding to the processing result of the business process for the previous request if there is inconsistency A transition destination screen is created using the return step and the transition destination URL corresponding to the result code, and the transition destination screen is created. Session, characterized in that to execute a step of filling the destination screen number obtained by adding 1 to the transition source screen number for holding, and a step of returning to the client the destination screen as a response to.

Still further, the program of the present invention receives a request from a client in a computer,
The client screen number in the request is compared with the transition destination screen number held by the session, and if the client screen number is greater than or equal to the transition destination screen number, it is determined that there is consistency, and the client screen number is less than the transition destination screen number In the case of, the process that determines that there is an inconsistency, and in the case that there is consistency, execute the business process and return the result code corresponding to the processing result, and add 1 to the client screen number in the request and the transition destination screen A step of overwriting the transition destination screen number held by the session by the number, a step of returning a result code corresponding to the processing result of the business process for the previous request when the transition is inconsistent, and a step of transition destination U corresponding to the result code
A step of creating a transition destination screen using RL and embedding the transition destination screen number held by the session in the transition destination screen and a step of returning the transition destination screen to the client as a response are performed.

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] Referring to FIG.
The Web application system to which the business process control method according to the first embodiment of the present invention is applied includes a Web application server 1 and the Internet, LAN (Local Area) provided to the Web application server 1.
a one or more (one as shown) client 2 connected via a communication line (not shown) such as a network
Thus, the main part is constituted.

The Web application server 1 includes a framework control unit 10, a session 20, a sequence holding unit 21, a user interface structure unit 30,
One or more business processes 31 and one or more screen construction units 40
It is comprised including.

The framework control unit 10 is a part that mainly controls screen transitions, and includes a request control unit 11, a screen transition management unit 12, and a screen transition information storage unit 13.

The request control unit 11 performs a process from receiving a request from the client 2 to returning a response.
Analysis of how the request was sent, analysis of the request,
All processes such as calling the business process 31, calling a method, and requesting display of the next screen are performed. Further, the request control unit 11 determines whether the request transmitted from the client 2 is a request transmitted by a reload operation of the latest result display screen or a return to a screen preceding the latest result display screen. In addition, it is determined whether the request is permitted as an application.

The screen transition management section 12 uses the result code passed from the request control section 11 as a key to index the screen transition information storage section 13 to display the latest result, which is a transition destination URL (Uniform Resource Location) of the transition destination screen.
tor).

The screen transition information storage unit 13 stores a business process 31
And a plurality of screen transition information pairs each of which includes a result code of the above and a transition destination URL of a transition destination screen displaying the processing result of the business process 31.

The session 20 is composed of the client 2 and We
b A unit for processing one business case in a dialog with the application server 1, and stores information shared over a plurality of requests. In particular, session 20
Is the client 2 and the web application server 1
In order to check the consistency between them, the sequence number (transition source screen number) of the screen that is the transition source of the latest result display screen that should be displayed on the client 2 is stored in the sequence storage unit 21.

The user interface structure unit 30 is provided with an HTML (Hyper Text) arranged on a browser.
t Markup Language) Provides the function of expressing the structure of the control in a tree structure,
A business process 31 for an operation on the ML control is defined.

The screen construction unit 40 obtains a processing result from the user interface construction unit 30 based on the transition destination URL passed from the request control unit 11, creates a transition destination screen, and stores the sequence holding unit 21 in the created transition destination screen. Embeds the sequence number (transition destination screen number) of the transition destination screen obtained by adding 1 to the transition source screen number held in.

The client 2 sends a request to the request control unit 11, and receives a transition destination screen as a result of the request from the request control unit 11 as a response.

FIG. 2 shows the Web application server 1
2 shows the flow of the control of the business process in FIG. 1 and describes the procedure of the operation from when the client 2 sends the request to the request control unit 11 to when the client 2 receives the response.

FIG. 3 shows the Web application server 1
FIG. 7 is a diagram for explaining a method of expressing and updating a transition source screen number and a transition destination screen number in the business process control method in FIG.

Referring to FIG. 4, the processing procedure of the request control unit 11 includes a request receiving step S101, a screen number consistency check step S102, a business process execution step S103, a result code receiving step S104,
Transition source screen number overwriting step S105, previous request result code acquisition step S106, transition destination screen requesting step S107, transition destination screen receiving step S108
And a transition destination screen response transmission step S109.

Next, the operation of the Web application server 1 thus configured according to the first embodiment will be described together with a business process control method with reference to FIGS. Note that the numbers in parentheses indicate the description of the numbers in parentheses in FIGS. 2 and 4.

(1) When a screen is displayed on the client 2 (hereinafter, referred to as a client screen), a request including a screen number (client screen number) embedded in the client screen is sent to the Web.
Sent to application server 1.

(2) In the Web application server 1, the request control unit 11 of the framework control unit 10 receives the request transmitted from the client 2 (step S101), and the request control unit 11 first communicates with the client 2. A screen sequence consistency check using the screen number between the Web application servers 1 is performed (step S102). This consistency check is performed by checking the client screen number in the request and the sequence holding unit 21
Is compared with the transition source screen number (initial value = 1) held in the client screen number. If the client screen number is larger than the transition source screen number, the client screen transitions from the transition source screen of the transition source screen number Therefore, it is determined that there is consistency.

If there is a match, the request control unit 11
Transfers the execution of the business process 31 to the user interface structure unit 30 through the session 20 (step S1).
03). This operation will be described later in detail with reference to FIG.

(3) User interface structure section 30
When the execution of the business process 31 is delegated from the request control unit 11, the relevant business process 31 is called and the business process 31
Is completed, a result code corresponding to the processing result is returned to the request control unit 11 through the session 20.

(4) Upon receiving the result code (step S104), the request control unit 11 overwrites the transition source screen number stored in the sequence storage unit 21 with the client screen number (= transition destination screen number) in the request. And
Requests from all screens transmitted to the client so far are regarded as inconsistent (step S
105).

(5) Next, the request control unit 11 calls the screen transition management unit 12 using the received result code as a parameter, and requests selection of a transition destination screen displaying the latest result (step S107).

(6) The screen transition management section 12 selects the transition destination URL corresponding to the result code from the screen transition information storage section 13 and returns it to the request control section 11.

(7) Upon receiving the transition destination URL (step S108), the request control unit 11 gives the transition destination URL to the screen construction unit 40 and requests creation of the transition destination screen.

The screen construction unit 40 obtains the processing result of the business process 31 from the user interface configuration unit 30 based on the transition destination URL, creates a transition destination screen, and stores the transition source screen held by the sequence holding unit 21 in the transition destination screen. The transition destination screen number obtained by adding 1 to the number is embedded, and the transition destination screen is designated by the request control unit 1.
Pass to 1.

(8) The request control unit 11 returns the transition destination screen to the client 2 as a response (step S1).
09). As a result, a transition destination screen displaying the latest result is displayed on the client 2.

On the other hand, if the screen numbers do not match in step S102, the request control unit 11 acquires the result code of the business process 31 for the previous request from the user interface structure unit 30 (step S106), and By calling the screen transition management unit 12 using the result code of the business process 31 as a parameter, a request is made to select a transition destination screen displaying the latest result (step S1).
07).

The screen transition management unit 12 changes the destination URL corresponding to the result code of the business process 31 for the previous request.
From the screen transition information storage unit 13 and the request control unit 11
Return to.

When receiving the transition destination URL (step S108), the request control unit 11 gives the transition destination URL to the screen construction unit 40 and requests creation of the transition destination screen.

The screen construction unit 40 obtains the processing result of the business process 31 from the user interface construction unit 30 based on the transition destination URL, creates a transition destination screen, and stores the transition source screen held by the sequence holding unit 21 in the transition destination screen. The transition destination screen number obtained by adding 1 to the number is embedded, and the transition destination screen is designated by the request control unit 1.
Pass to 1.

The request control section 11 returns the transition destination screen as a response to the client 2 (step S109).
As a result, the transition destination screen displaying the latest result is displayed again on the client 2.

FIG. 3 explains a method of updating the transition source screen number and the transition destination screen number. When the business process 31 for the request is completed, the client screen number in the request is larger by one than the transition source screen number held in the sequence holding unit 21. For example, when the business process p2 of the request r2 in FIG. 3 is completed, the transition destination screen number embedded in the transition destination screen f2 is “3”, and the transition source screen number held in the sequence holding unit 21 is “2”. ".

However, if there is a reload operation on the client screen displaying the latest result or a submission from the screen already displayed, this screen sequence relationship will not hold. For example, in FIG. 3, when the screen f2 is displayed, it is assumed that the screen returns to the screen f1 by the back operation and the request is transmitted again from the screen f1. In this case, since the old transition destination screen number embedded in the screen f1 is transmitted as the client screen number, the transmitted client screen number is “2”, and the transition source screen number “ 2 ". Therefore, when the screen is submitted on a screen older than the transition destination screen displaying the latest result, the client screen number in the request does not become larger than the transition source screen number stored in the sequence storage unit 21. Can be regarded as inconsistent. If there is no consistency, the request control unit 11 performs a transition to the transition destination screen of the business process 31 for the previous request for which the latest result should be displayed.

When the reload operation is performed on the screen f2, the client 2 returns to the screen f1 and performs the same operation as when the request is transmitted again.

From the above, if the client screen number in the request is compared with the transition source screen number held in the sequence holding unit 21, it is a request submitted from the transition destination screen that has transitioned from the transition source screen. By judging whether or not this is the case, correct control of the business process 31 can be performed.

In the first embodiment, the screen number held in the sequence holding unit 21 is the transition source screen number, and the client screen number being requested by the request control unit 11 and the screen number held in the sequence holding unit 21 are stored. Compared with the transition source screen number, if the client screen number is larger than the transition source screen number, it is determined that there is consistency,
The screen number held in the sequence holding unit 21 is set as the transition destination screen number of the transition destination screen that displays the latest result to be displayed on the client 2. The stored transition destination screen number may be compared, and if the client screen number is greater than or equal to the transition destination screen number, it may be determined that there is consistency.

According to the first embodiment, the double erroneous execution of the business process 31 in the Web application server 1 can be suppressed by the screen number. In other words, the user of the Web application system interferes with the business process 31 without restriction on operating the browser (restriction on screen transition operations such as reload, back, forward, etc.). No, you can operate the browser freely.

Further, the business process developer of the Web application system does not need to make the Web application system compatible with the business process 31 by a screen transition operation such as reload, back, and forward in the client 2.

[Second Embodiment] FIG. 5 shows a W to which a business process control method according to a second embodiment of the present invention is applied.
FIG. 2 is a block diagram illustrating a configuration of an web application system. This Web application system is shown in FIG.
A Web application system to which the business process control method according to the first embodiment shown in FIG.
The only difference is that the web application server 1 has a web application server program 100.

The Web application server program 100 is read by the Web application server 1 and controls the operation of the Web application server 1 by the framework control unit 10 (request control unit 11, screen transition management unit 12, screen transition information storage unit 13). ), Session 20
(Sequence holding unit 21), user interface structure unit 30 (business process 31), screen configuration unit 40, and the like. Web application server program 10
Since the operation of the Web application server 1 under the control of 0 is exactly the same as the operation of the Web application server 1 in the first embodiment, a detailed description thereof will be omitted.

[0065]

The first effect is that the user of the Web application system does not impose restrictions on operating the browser (restrictions such as not being able to perform screen transition operations such as reload, back, and forward). In addition, the browser operation can be freely performed without hindering business processing. The reason is that the web application server controls the business process by the screen number independently of the browser operation, and blocks a request from the browser that hinders the business process.

The second effect is that the business process developer of the Web application system can perform reloading on the browser side,
This means that there is no need to build in the Web application system the correspondence to business processing by screen transition operations such as back and forward. The reason is that the control of the business process by the screen number can be incorporated as a common part on the Web application server side.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a Web application system to which a business process control method according to a first embodiment of the present invention is applied.

FIG. 2 is a diagram illustrating a flow of control of business processing by a business processing control method in a Web application server according to a first embodiment.

FIG. 3 is a diagram for describing a method of expressing a transition source screen number and a transition destination screen number and updating by a business process control method in the Web application server according to the first embodiment.

FIG. 4 is a flowchart illustrating a processing procedure of a request control unit in FIG. 1;

FIG. 5 is an overall configuration diagram of a Web application system to which a business process control method according to a second embodiment of the present invention is applied.

[Explanation of symbols]

1 Web application server 2 Client 10. Framework control unit 11 Request control unit 12 Screen transition management unit 13 Screen transition information storage 20 sessions 21 Sequence holding unit 30 User interface structure 31 Business processing 100 Web application server program S101 Request receiving step S102 Screen number consistency check step S103 Business process execution step S104 result code receiving step S105 Transition source screen number overwriting step S106 Previous request result code acquisition step S107 Transition destination screen request step S108 Transition destination screen receiving step S109 Transition destination screen response transmission step

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Toshiyuki Nakano             3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture               NEC Information Systems Co., Ltd. F term (reference) 5B085 AA08 AC03 AC13 BA07 BG01                       BG04 BG07

Claims (12)

[Claims] 1. A Web application server for performing business processing in response to a browser operation on a client,
Compare the client screen number in the request from the client with the transition source screen number held by the session,
When the client screen number is larger than the transition source screen number, it is determined that there is consistency, the business process is executed, and the transition destination screen is transmitted to the client as a response.
A web application server comprising: a request control unit that determines that there is an inconsistency when a client screen number is equal to or less than a transition source screen number and does not execute a business process. 2. A Web application server for performing business processing in response to a browser operation on a client,
Compare the client screen number in the request from the client with the transition destination screen number held by the session,
If the client screen number is greater than or equal to the transition destination screen number, it is determined that there is consistency, the business process is executed, and the transition destination screen is transmitted to the client as a response. A web application server, comprising: a request control unit that determines that there is a match and does not execute a business process. 3. A user interface configuration unit for executing a business process and returning a result code, a screen transition management unit for indexing a transition destination URL using the result code as a key, and a transition destination UR
A screen construction unit that obtains a processing result of the business process from the user interface configuration unit based on the L, creates a transition destination screen, and embeds a transition destination screen number obtained by adding 1 to a transition source screen number held by a session in the transition destination screen. And the client screen number in the request from the client is compared with the transition source screen number held by the session, and when the client screen number is larger than the transition source screen number, it is determined that there is consistency and the user interface configuration is determined. Unit to execute a business process, and based on the result code from the user interface configuration unit, the screen transition management unit
L, the screen construction unit creates a transition destination screen and sends it to the client as a response. On the other hand, if the client screen number is less than or equal to the transition source screen number, it is determined that there is an inconsistency and the user interface configuration unit A request control unit that obtains a result code of a business process for the previous request from the server, obtains a transition destination URL from the screen transition management unit, causes the screen construction unit to create a transition destination screen for the previous request, and transmits it to the client as a response. A Web application server comprising: 4. A user interface configuration unit for executing a business process and returning a result code, a screen transition management unit for indexing a transition destination URL using the result code as a key, and a transition destination UR
A screen construction unit that obtains the processing result of the business process from the user interface configuration unit based on the L, creates a transition destination screen, and embeds the transition destination screen number held by the session in the transition destination screen, and a client that is requesting from the client Compare the screen number and the transition destination screen number held by the session, determine that the client screen number is consistent if the client screen number is equal to or greater than the transition destination screen number, and let the user interface component execute business processing, A transition destination URL is acquired from the screen transition management unit based on the result code from the user interface configuration unit, and the screen construction unit creates a transition destination screen and sends it to the client as a response. If the number is less than the screen number, it is determined that there is an inconsistency, and the user interface component Transition destination URL from the screen transition management unit obtains result code of the business process for Luo PREV
A request control unit for acquiring the request and causing the screen construction unit to create a transition destination screen for the previous request, and transmitting the transition destination screen to the client as a response. 5. Receiving a request from a client,
The client screen number in the request is compared with the transition source screen number held by the session, and if the client screen number is larger than the transition source screen number, it is determined that there is consistency, and the client screen number is determined to be the transition source screen number. In the following cases, it is determined that there is an inconsistency, when there is consistency, the business process is executed, and the transition destination screen is returned to the client as a response. Returning the previous screen to the client as a response. 6. Receiving a request from a client,
The client screen number in the request is compared with the transition destination screen number held by the session, and if the client screen number is greater than or equal to the transition destination screen number, it is determined that there is consistency, and the client screen number is less than the transition destination screen number In the case of, the step of determining that there is an inconsistency, the step of executing the business process if there is consistency and returning the transition destination screen to the client as a response, and the transition destination of the business process for the previous request in the case of mismatch Returning a screen as a response to the client. 7. Receiving a request from a client,
The client screen number in the request is compared with the transition source screen number held by the session, and if the client screen number is larger than the transition source screen number, it is determined that there is consistency, and the client screen number is determined to be the transition source screen number. In the following cases, the process that is judged to be inconsistent, and when there is consistency, the business process is executed and the result code corresponding to the processing result is returned, and the transition source that the session holds by the client screen number in the request A step of overwriting the screen number, a step of returning a result code corresponding to the processing result of the business process for the previous request when the screen number is inconsistent, and a step of creating a transition destination screen using the transition destination URL corresponding to the result code A step of embedding a transition destination screen number obtained by adding 1 to the transition source screen number held by the session in the transition destination screen; Business processing control method characterized by comprising the step of returning to the client as Pons. 8. Receiving a request from a client,
The client screen number in the request is compared with the transition destination screen number held by the session, and if the client screen number is greater than or equal to the transition destination screen number, it is determined that there is consistency, and the client screen number is less than the transition destination screen number In the case of, the process that determines that there is an inconsistency, and in the case that there is consistency, execute the business process and return the result code corresponding to the processing result, and add 1 to the client screen number in the request and the transition destination screen A step of overwriting the transition destination screen number held by the session by the number, a step of returning a result code corresponding to the processing result of the business process for the previous request when the transition is inconsistent, and a step of transition destination U corresponding to the result code
A business process control method comprising: creating a transition destination screen using RL, embedding a transition destination screen number held by a session in the transition destination screen, and returning the transition destination screen to the client as a response. . 9. A computer receives a request from a client, compares a client screen number in the request with a transition source screen number held by a session,
The process of determining that there is consistency when the client screen number is larger than the transition source screen number, and determining that there is inconsistency when the client screen number is less than or equal to the transition source screen number. A program for executing a process of returning a transition destination screen to a client as a response after executing a process, and a process of returning a transition destination screen of a business process corresponding to a previous request to the client as a response when there is an inconsistency. 10. A computer receives a request from a client, compares a client screen number in the request with a transition destination screen number held by the session, and matches if the client screen number is greater than or equal to the transition destination screen number. Determining that the client screen number is inconsistent if the client screen number is less than the transition destination screen number, and executing the business process and returning the transition destination screen to the client as a response if there is consistency And a step of returning a transition destination screen of the business process to the previous request as a response to the client in the case of inconsistency. 11. A computer receives a request from a client, compares a client screen number in the request with a transition source screen number held by a session, and determines that the client screen number is larger than the transition source screen number. A process that determines that there is consistency and determines that there is an inconsistency when the client screen number is less than or equal to the transition source screen number, and executes a business process when there is consistency and outputs a result code corresponding to the processing result. Return and overwrite the transition source screen number retained by the session with the client screen number in the request, and if inconsistent, return the result code corresponding to the processing result of the business process for the previous request, and the result Transition destination U corresponding to code
Executes a step of creating a transition destination screen using RL, embedding a transition destination screen number obtained by adding 1 to a transition source screen number held by the session in the transition destination screen, and a step of returning the transition destination screen to the client as a response. Program to let you. 12. A computer receives a request from a client, compares the client screen number in the request with the transition destination screen number held by the session, and matches if the client screen number is greater than or equal to the transition destination screen number. That the client screen number is less than the transition destination screen number, it is judged that there is inconsistency, and if there is consistency, the business process is executed and the result code corresponding to the processing result is returned Overwriting the transition destination screen number held by the session with the transition destination screen number obtained by adding 1 to the client screen number in the request;
In the case of inconsistency, a step of returning a result code corresponding to the processing result of the business process with respect to the previous request, and creating a transition destination screen using the transition destination URL corresponding to the result code, and holding the session in the transition destination screen A program for executing a step of embedding a transition destination screen number to be executed and a step of returning the transition destination screen to the client as a response.