CN111813353A - Printing system, method and device based on web and proxy server - Google Patents
Printing system, method and device based on web and proxy server Download PDFInfo
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- CN111813353A CN111813353A CN202010499812.0A CN202010499812A CN111813353A CN 111813353 A CN111813353 A CN 111813353A CN 202010499812 A CN202010499812 A CN 202010499812A CN 111813353 A CN111813353 A CN 111813353A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000006870 function Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
- G06F3/1205—Improving or facilitating administration, e.g. print management resulting in increased flexibility in print job configuration, e.g. job settings, print requirements, job tickets
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1253—Configuration of print job parameters, e.g. using UI at the client
- G06F3/1254—Automatic configuration, e.g. by driver
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
- G06F3/1285—Remote printer device, e.g. being remote from client or server
- G06F3/1287—Remote printer device, e.g. being remote from client or server via internet
Abstract
The invention provides a printing system, a method, a device and a proxy server based on web, wherein the system comprises: the system comprises a printing server, an agent server and a web printing end; wherein: the printing server is used for sending printing service information to the proxy server; the proxy server is used for receiving the printing service information provided by the printing server and sending the printing service information to a subscribed web printing terminal; the web printing terminal is used for requesting the subscribed printing service information from the proxy server terminal and sending printing data corresponding to the printing service information to the proxy server terminal after the subscribed printing service information is determined; and the proxy server is also used for sending the printing data to the corresponding printing server so that the printing server can drive a printer to print. The invention enables the web printing scheme to have better expandability and richer functions by using the IOT technical scheme of the publishing and subscribing of the MQTT.
Description
Technical Field
The invention relates to the field of cloud printing, in particular to a printing system, a printing method, a printing device and a proxy server side based on a web.
Background
Various systems based on web architecture are increasing on the market at present, such as the ordering function of various logistics systems. According to the traditional web printing scheme, printing data is generated at the background of a server or generated at the front end of a web and displayed, and finally, a printer driver is directly called by a browser to print. It has the problems that:
the printing mode based on the printer driver is relatively fixed on the deployment of the whole system, the printing server and the web front end have strong coupling, and the printing server is mostly in one-to-one correspondence when in use, which is not beneficial to the expansion of the system and the enrichment of functions.
Disclosure of Invention
In view of this, embodiments of the present invention provide a web-based printing system, method, apparatus, and proxy server, which enable a web printing scheme to have better extensibility and richer functions.
An embodiment of the present invention provides a web-based printing system, including:
the system comprises a printing server, an agent server and a web printing end; wherein:
the printing server is used for sending printing service information to the proxy server;
the proxy server is used for receiving the printing service information provided by the printing server and sending the printing service information to a subscribed web printing terminal;
the web printing terminal is used for requesting the subscribed printing service information from the proxy server terminal and sending printing data corresponding to the printing service information to the proxy server terminal after the subscribed printing service information is determined;
and the proxy server is also used for sending the printing data to the corresponding printing server so that the printing server can drive a printer to print.
Preferably, the web printing terminal establishes a connection with the proxy server terminal through webSOCKET, and queries the printing service information from the proxy server terminal by using an MQTT protocol.
Preferably, the print data is encapsulated in an XML package through an XML language; and in the XML package, each part of the printing data is added with corresponding label description according to the data attribute thereof
The printing server is further configured to receive the XML packet forwarded by the proxy server, and parse the printing data according to the label description of each part, so as to generate a corresponding printing instruction for the printer to complete printing.
Preferably, the agent server and the printing server are both deployed on a local computer to realize local printing; or
The agent server and the printing server are deployed at the cloud to realize remote or cloud printing; or
The agent server and the printing server are deployed on a remote PC to realize remote printing.
Preferably, the printing server is further configured to feed back the printing task information and the printer status to the web printing end through the proxy server.
The embodiment of the invention also provides a printing method based on the web, which comprises the following steps:
receiving printing service information provided by a printing service terminal, and sending the printing service information to a subscribed web printing terminal;
receiving the subscribed printing data sent by the web printing terminal based on the printing service information;
and sending the printing data to a corresponding printing server to drive a printer to print by the printing server.
Preferably, the method further comprises the following steps:
and receiving the printing task information and the printer state fed back by the printing server side, and sending the printing task information and the printer state to the web printing side.
An embodiment of the present invention further provides a web-based printing apparatus, including:
the printing service information receiving and sending unit is used for receiving the printing service information provided by the printing service terminal and sending the printing service information to the subscribed web printing terminal;
a print data receiving unit, configured to receive print data sent by the subscribed web printing terminal based on the print service information;
and the printing data sending unit is used for sending the printing data to the corresponding printing service end so that the printing service end can drive a printer to print.
Preferably, the method further comprises the following steps:
and the state feedback unit is used for receiving the printing task information and the printer state fed back by the printing server and sending the printing task information and the printer state to the web printing end.
The embodiment of the invention also provides a proxy server, which comprises a memory and a processor, wherein executable codes are stored in the memory, and can be executed by the processor to realize the web-based printing method.
In the embodiment, the decoupling between the web printing end and the printing service end is realized through the IOT technical scheme based on the publishing and the subscribing, so that one printing service end can simultaneously correspond to a plurality of web printing ends, and the whole web printing scheme has better expandability and richer functions.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts. yi i
Fig. 1 is a schematic structural diagram of a web-based printing system provided by a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating a web-based printing method according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a web-based printing apparatus according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, a first embodiment of the present invention provides a web-based printing system that implements a richly extensible printing function by introducing a publisher and subscriber schema. The printing system specifically includes:
a printing server 100, a proxy server 200, and a web printing server 300; wherein:
the printing server 100 is configured to send printing service information to the proxy server 200.
In this embodiment, the print server 100 operates as a Publisher (Publisher) on a server, a remote computer or a local computer. The printing service end 100 issues printing service information to the proxy service end 200, and accepts a connection initiated by a subscriber who subscribes to the corresponding printing service information through the proxy service end 200.
In this embodiment, the printing service end 100 may issue the printing service information to the proxy service end 200 through MQTT protocol. The MQTT is a message publishing and subscribing transmission protocol based on a client/server under an ISO standard, is light, simple, open and easy to implement, and is widely applied to Internet of things schemes.
Of course, it should be noted that in other embodiments of the present invention, a TCP connection or other custom protocol may also be used for connection, and the present invention is not limited in particular.
The proxy server 200 is configured to receive the printing service information provided by the printing server 100, and send the printing service information to the subscribed web printer 300.
In this embodiment, the proxy server 200 operates as a Broker (Broker) on a server or a local computer. It can receive the printing service information provided by the publisher (i.e. the printing service end 100), and provide the required printing service information to the subscriber (i.e. the web printing end 300), and if there is corresponding service information, establish a data transmission channel for the two. The broker server 200 is the bridge between the entire publisher and subscriber.
In this embodiment, the web printing end 300 needs to subscribe to a theme in advance, and when there is print service information corresponding to the theme, the proxy server 200 pushes the print service information to the web printing end 300.
The web print end 300 is configured to request the subscribed print service information from the proxy server 200, and send print data corresponding to the print service information to the proxy server 200 after determining that the subscribed print service information exists.
In the present embodiment, the web print server 300 operates as a Subscriber (Subscriber) on a local browser. The subscriber requests the proxy server 200 for printing service information, and initiates a connection through the proxy server 200 if there is corresponding printing service information. The print data is sent to the publisher through the proxy server 200, and the print job information and the printer status sent by the publisher through the proxy server 200 are received.
It can be seen that when the web printing terminal 300 needs to access the printing system, it only needs to subscribe to the corresponding theme (i.e., the printing service information), and does not need to additionally perform installation of the print driver and related calling operations, so that the entire printing system has good extensibility.
The web printing terminal 300 can establish a connection with the proxy server terminal 200 through web session, and query the proxy server terminal 200 for printing service information using MQTT protocol.
WEBSOCKET is a full-duplex communication protocol which is started to be provided by HTML5 and is carried out on a TCP long connection, and a browser and a server establish a persistent connection through the full-duplex communication protocol and carry out data bidirectional communication.
The proxy server 200 is further configured to send the print data to the corresponding print server 100, so that the print server 100 drives a printer to print.
In summary, in the present embodiment, the decoupling between the web print end and the print service end is realized through the IOT technical scheme based on publishing and subscribing, and the web print end can send and print the print data only by subscribing to the related print service information, which facilitates the process of accessing the web print end to the whole system, so that the whole web print scheme has better expandability.
On the basis of the above-described embodiments, in a preferred embodiment of the invention,
the printing data is packaged in an XML package through XML; and in the XML package, each part of the printing data is added with corresponding label description according to the data attribute of the part.
The printing server 100 is further configured to receive the XML package forwarded by the proxy server, and parse the printing data according to the label description of each part to generate a corresponding printing instruction for the printer to complete printing
In the printing mode based on the printer driver, the print data is generally converted into the data in the picture format for printing, however, the data in the picture format has a large data volume during printing, the printing speed is determined to be relatively slow, and during conversion, the problems of unclear picture details, such as unclear barcode printing, virtual characters, etc., may occur, so that the printing effect is not good.
For this reason, in this embodiment, the print data is packaged using XML, and during the packaging process, corresponding tag descriptions are added according to attributes of each part of the print data, such as adding a tag description to a text part (< text > </text >), a tag description to a barcode part (< barcode > </barcode >), a tag description to a two-dimensional code part (< qrcode > </qrcode >), a tag description to an image part (< image > </image >), a tag description to a graphic part (< rectangle > </rectangle >), and the like. During parsing, the printing server 100 parses and converts the printing data into a printing instruction according to the label description, so that various printing modes are realized, and the printing effect is ensured.
On the basis of the above embodiment, in a preferred embodiment of the present invention, each part can be flexibly deployed according to actual needs, and usage scenarios are richer.
For example, the proxy server 200 and the print server 100 may both be deployed on a local computer to implement local printing; or
The agent server 200 and the printing server 100 can be deployed in a cloud to realize remote or cloud printing; or
The proxy server 200 and the printing server 100 can be deployed on a remote PC to implement remote printing.
The present invention may be implemented in any suitable manner, which is not described herein in detail.
Referring to fig. 2, a second embodiment of the present invention further provides a web-based printing method, which starts from a proxy server and includes:
s201, receiving printing service information provided by a printing service end, and sending the printing service information to a subscribed web printing end;
s202, receiving the printing data sent by the subscribed web printing end based on the printing service information;
and S203, sending the printing data to a corresponding printing server to drive a printer to print by the printing server.
Preferably, the method further comprises the following steps:
and receiving the printing task information and the printer state fed back by the printing server side, and sending the printing task information and the printer state to the web printing side.
The printing server side can be connected with the printer in the process of driving the printer to print so as to obtain current printing task information, printer state and the like, and the printing task information and the printer state can be forwarded to the web printing side through the proxy server side so as to be displayed on the web printing side and manage the printing task.
Referring to fig. 3, a third embodiment of the present invention further provides a web-based printing apparatus, including:
a printing service information transceiving unit 310, configured to receive printing service information provided by a printing service, and send the printing service information to a subscribed web printing end;
a print data receiving unit 320, configured to receive print data sent by the subscribed web print server based on the print service information;
a print data sending unit 330, configured to send the print data to a corresponding print server, so that the print server drives a printer to print the print data.
Preferably, the method further comprises the following steps:
and the state feedback unit is used for receiving the printing task information and the printer state fed back by the printing server and sending the printing task information and the printer state to the web printing end.
The fourth embodiment of the present invention further provides a proxy server, which includes a memory and a processor, where the memory stores executable codes, and the executable codes can be executed by the processor to implement the web-based printing method as described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus and method embodiments described above are illustrative only, as the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, an electronic device, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A web-based printing system, comprising:
the system comprises a printing server, an agent server and a web printing end; wherein:
the printing server is used for sending printing service information to the proxy server;
the proxy server is used for receiving the printing service information provided by the printing server and sending the printing service information to a subscribed web printing terminal;
the web printing terminal is used for requesting the subscribed printing service information from the proxy server terminal and sending printing data corresponding to the printing service information to the proxy server terminal after the subscribed printing service information is determined;
and the proxy server is also used for sending the printing data to the corresponding printing server so that the printing server can drive a printer to print.
2. The web-based printing system of claim 1, wherein the web printer establishes a connection with the proxy server via webSOCKET and queries the proxy server for printing service information using MQTT protocol.
3. The web-based printing system of claim 1, wherein the print data is encapsulated in an XML package by an XML language; in the XML package, each part of the printing data is added with corresponding label description according to the data attribute of the printing data;
the printing server is further configured to receive the XML packet forwarded by the proxy server, and parse the printing data according to the label description of each part, so as to generate a corresponding printing instruction for the printer to complete printing.
4. The web-based printing system of claim 1, wherein the agent server and the print server are both deployed on a local computer to implement local printing; or
The agent server and the printing server are deployed at the cloud to realize remote or cloud printing; or
The agent server and the printing server are deployed on a remote PC to realize remote printing.
5. The web-based printing system of claim 1,
and the printing server is also used for feeding back printing task information and printer state to the web printing end through the proxy server.
6. A web-based printing method, comprising:
receiving printing service information provided by a printing service terminal, and sending the printing service information to a subscribed web printing terminal;
receiving the subscribed printing data sent by the web printing terminal based on the printing service information;
and sending the printing data to a corresponding printing server to drive a printer to print by the printing server.
7. The web-based printing method of claim 6, further comprising:
and receiving the printing task information and the printer state fed back by the printing server side, and sending the printing task information and the printer state to the web printing side.
8. A web-based printing apparatus, comprising:
the printing service information receiving and sending unit is used for receiving the printing service information provided by the printing service terminal and sending the printing service information to the subscribed web printing terminal;
a print data receiving unit, configured to receive print data sent by the subscribed web printing terminal based on the print service information;
and the printing data sending unit is used for sending the printing data to the corresponding printing service end so that the printing service end can drive a printer to print.
9. The web-based printing device of claim 8, further comprising:
and the state feedback unit is used for receiving the printing task information and the printer state fed back by the printing server and sending the printing task information and the printer state to the web printing end.
10. A proxy server comprising a memory and a processor, the memory having stored therein executable code executable by the processor to implement the web-based printing method of claim 6 or 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010499812.0A CN111813353A (en) | 2020-06-04 | 2020-06-04 | Printing system, method and device based on web and proxy server |
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| CN202010499812.0A CN111813353A (en) | 2020-06-04 | 2020-06-04 | Printing system, method and device based on web and proxy server |
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| CN114826979A (en) * | 2022-04-07 | 2022-07-29 | 中国联合网络通信集团有限公司 | Network link quality obtaining method, device, system, equipment and storage medium |
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Application publication date: 20201023 |