CN106020836A - Exception handling method and device for lower layer exception inheriting upper layer exception - Google Patents

Exception handling method and device for lower layer exception inheriting upper layer exception Download PDF

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Publication number
CN106020836A
CN106020836A CN201610365965.XA CN201610365965A CN106020836A CN 106020836 A CN106020836 A CN 106020836A CN 201610365965 A CN201610365965 A CN 201610365965A CN 106020836 A CN106020836 A CN 106020836A
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exception
class
layer
service layer
abnormal
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CN106020836B (en
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李新虎
于辉
刘俊朋
胡玉鹏
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Inspur Beijing Electronic Information Industry Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/30—Creation or generation of source code
    • G06F8/31—Programming languages or programming paradigms
    • G06F8/315—Object-oriented languages
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/40—Transformation of program code
    • G06F8/41—Compilation
    • G06F8/44—Encoding
    • G06F8/443—Optimisation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/40—Transformation of program code
    • G06F8/41—Compilation
    • G06F8/44—Encoding
    • G06F8/443—Optimisation
    • G06F8/4434—Reducing the memory space required by the program code
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/70—Software maintenance or management
    • G06F8/72—Code refactoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4488—Object-oriented
    • G06F9/4492—Inheritance

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  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
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Abstract

The invention discloses an exception handling method and device for lower layer exception inheriting upper layer exception. The method includes the steps that an exception architecture relation of a server side in a Java project is reconstructed, an exception class in a database layer is handled, and the exception class of the database layer is used for inheriting an exception class of a service layer; when the exception state occurs, the exception class of the database layer is used for transmitting exception data to the exception class of the service layer, and exception data is directly transmitted to a user interface layer through the exception class of the service layer. By means of the method, the complex structure of codes is reduced, and readability of the codes is improved.

Description

A kind of lower floor is abnormal inherits the abnormal abnormality eliminating method in upper strata and device
Technical field
The present invention relates to java project development technical field, particularly relate to a kind of lower floor and extremely continue Hold the abnormal abnormality eliminating method in upper strata and device.
Background technology
At present, computer technology development, derive a lot of programming languages.Java conduct The representative language of contact, is accepted by numerous programmers worker.Java is compared to other language Speech, language is simple and clear, but complicated structure, especially there is a lot of try and catch modules, Whole code block is carried out the segmentation of size, has reduced the readability of code, also give and safeguard band Come difficult.In abnormality processing, the bottom i.e. exception class of database layer abnormal data is transferred to Last layer i.e. service layer, is processed abnormal data by the exception class of service layer, is converted to clothes The data type that business layer can process, transmits the upper strata i.e. user interface layer to service layer the most again Process, this whole process owing to needing the exception class of service layer that abnormal data is processed, Be converted to the data type that service layer can process, so can use a lot of try and catch moulds Block, needs to use the code of try catch data Layer, needs to utilize the generation in Java engineering code Code block quantity is many, and code readability is relatively low.
Summary of the invention
It is an object of the invention to provide the abnormal abnormality processing side inheriting upper strata exception of a kind of lower floor Method and device, to realize reducing the labyrinth of code, improve the readability of code.
For solving above-mentioned technical problem, the present invention provides a kind of lower floor abnormal succession upper strata exception Abnormality eliminating method, the method includes:
The abnormal framework relation of server end, the exception class to database layer in reconstruct Java project Process, the exception class of database layer is inherited the exception class of service layer；
When abnormality occurs, utilize the exception class of database layer that abnormal data is sent to service The exception class of layer, is conveyed directly to user interface layer by the exception class of service layer by abnormal data.
Preferably, the exception class of described database layer includes DBException class, service layer Exception class includes BusinessException class；Described DBException class and BusinessException class all inherits the big class of Exception.
Preferably, described method also includes:
When logical process, utilize the exception class of service layer, and the code combining service layer is carried out Logical process.
Preferably, by the exception class of service layer, abnormal data is conveyed directly to user interface layer Afterwards, also include:
User interface layer is utilized directly abnormal data to be processed.
The present invention also provides for the abnormal exception handling device inheriting upper strata exception of a kind of lower floor, this dress Put and include:
Inherit module, for reconstructing the abnormal framework relation of server end, logarithm in Java project Process according to the exception class of storehouse layer, the exception class of database layer is inherited the exception class of service layer；
Delivery module, when being used for occurring abnormality, the exception class utilizing database layer will be abnormal Data are sent to the exception class of service layer, are directly passed by abnormal data by the exception class of service layer Deliver to user interface layer.
Preferably, the exception class of described database layer includes DBException class, service layer Exception class includes BusinessException class；Described DBException class and BusinessException class all inherits the big class of Exception.
Preferably, described device also includes:
Logic processing module, for when logical process, utilizes the exception class of service layer, and ties The code closing service layer carries out logical process.
Preferably, described device also includes:
Abnormality processing module, is used for utilizing user interface layer directly to process abnormal data.
A kind of lower floor provided by the present invention is abnormal inherit the abnormal abnormality eliminating method in upper strata and Device, the abnormal framework relation of server end, the exception to database layer in reconstruct Java project Class processes, and the exception class of database layer is inherited the exception class of service layer；Abnormal shape occurs During state, utilize the exception class of database layer that abnormal data is sent to the exception class of service layer, logical Abnormal data is conveyed directly to user interface layer by the exception class crossing service layer.Visible, occurring During abnormality post processing is abnormal, owing to the exception class of database layer inherits service layer Exception class, it is only necessary to by the exception class of database layer, abnormal data is sent to the different of service layer Often class, the exception class of service layer need not abnormal data is carried out process be converted to service layer can Process data type, just directly abnormal data can be conveyed directly to user interface layer, by with Family boundary layer carries out abnormality processing, so without using a lot of try and catch modules, is not required to Want the code of try catch data Layer, need to utilize the code block quantity in Java engineering code to subtract Few, the readable raising of code, it is achieved that reduce the labyrinth of code, improves code Readable.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and Easily insight, the accompanying drawing in describing below is only embodiments of the invention, common for this area From the point of view of technical staff, on the premise of not paying creative work, it is also possible to attached according to provide Figure obtains other accompanying drawing.
Fig. 1 is that a kind of lower floor provided by the present invention is abnormal inherits the abnormality processing side that upper strata is abnormal The flow chart of method；
Fig. 2 is succession process schematic in the present invention；
Fig. 3 is that a kind of lower floor provided by the present invention is abnormal inherits the abnormality processing dress that upper strata is abnormal The structural representation put.
Detailed description of the invention
The core of the present invention is to provide the abnormal abnormality processing side inheriting upper strata exception of a kind of lower floor Method and device, to realize reducing the labyrinth of code, improve the readability of code.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with this Accompanying drawing in inventive embodiments, carries out clear, complete to the technical scheme in the embodiment of the present invention Ground describe, it is clear that described embodiment be only a part of embodiment of the present invention rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having Make the every other embodiment obtained under creative work premise, broadly fall into present invention protection Scope.
Refer to Fig. 1, Fig. 1 is that a kind of lower floor provided by the present invention abnormal succession upper strata is abnormal The flow chart of abnormality eliminating method, the method includes:
S11: the abnormal framework relation of server end in reconstruct Java project, to database layer Exception class processes, and the exception class of database layer is inherited the exception class of service layer；
S12: when there is abnormality, utilizes the exception class of database layer by abnormal data transmission To the exception class of service layer, by the exception class of service layer, abnormal data is conveyed directly to user Boundary layer.
Visible, during occurring that abnormality post processing is abnormal, different due to database layer The often Similar integral exception class of service layer, it is only necessary to by the exception class of database layer by abnormal data Being sent to the exception class of service layer, the exception class of service layer need not process abnormal data Be converted to the data type that service layer can process, just can directly abnormal data be conveyed directly to User interface layer, is carried out abnormality processing by user interface layer, so without using a lot of try With catch module, it is not necessary to the code of try catch data Layer, need to utilize Java engineering generation Code block quantity in Ma reduces, the readable raising of code, realizes in this way reducing generation The labyrinth of code, improves the readability of code.
Based on said method, concrete, also include: when logical process, utilize service layer Exception class, and the code combining service layer carries out logical process.
Wherein, by the exception class of service layer abnormal data is conveyed directly to user interface layer it After, utilize user interface layer directly abnormal data to be processed.
Wherein, the exception class of database layer includes DBException class, the exception class of service layer Including BusinessException class；DBException class and BusinessException class are all Inherit the big class of Exception.
The present invention, by the way of inheriting upper strata Exception with bottom Exception, simplifies In Java engineering code, the quantity of try catch code block, develop cloud computing for Java code Engineering in, can effectively reduce the labyrinth of code, improve the readability of code, thus this It is readable that the advantage of invention includes simply being effectively improved code.
Based on said method, detailed, self-defined abnormal frame in each layer in restructuring java exploitation Structure relation, is reconstructed in java project, the abnormal framework relation of server end, allows the different of bottom Often type such as DBException inherits the exception on upper strata, such as: CloudBusinessExcepion.So, upper strata is without capturing the exception of lower floor, but directly Using it as ought an exception once dish out in such java project to more last layer, back-end code Lower floor in exploitation is abnormal inherits upper strata extremely, need not upper strata after such lower floor exception throws Codeacquisition, but directly it is spilled over to the code on upper strata, upper strata here is service layer, Lower floor is database layer, and upper strata is user interface layer.I.e. the exception class of service layer need not right Abnormal data carries out processing and is converted to the data type that service layer can process, just can be directly by different Regular data is conveyed directly to user interface layer, user interface layer carry out abnormality processing, such nothing A lot of try and catch modules need to be used, it is not necessary to the code of try catch data Layer, need The code block quantity in Java engineering code is utilized to reduce, the readable raising of code.
The present invention relates in java project development process, by the Exception of bottom not explicitly Try catch, but directly throw last layer.Current layer only need to be absorbed in the logic of current layer, Without the concern for lower floor's impact on this layer.By this method, can be with finite reduction, this layer of generation The code process to bottom exception logic, reduces invalid code, increases the readability of code.
Concrete, bottom Exception Type inherits the Exception Type of all high levels.The exception class of bottom Type, such as the DAO Exception Type of data base's DB layer, inherits the Service exception class serviced Type.So, the code of service layer, processing logic when, can directly dish out Service The code of layer, without the code at this layer of try catch database layer.
Concrete, in implementation process, need to define the abnormal BusinessException of service layer DBException with underlying database layer.Certainly, the big class of Exception is both inherited.
Then, DBException inherits BusinessException.So, at Service layer In, directly dish out BusinessException, the Exception of bottom of the most together having dished out. Service is without the Exception of the process DB layer of display.Implement Organization Chart with reference to Fig. 2, figure 2 is succession process schematic in the present invention.
Refer to Fig. 3, Fig. 3 is that a kind of lower floor provided by the present invention abnormal succession upper strata is abnormal The structural representation of exception handling device, this device includes:
Inherit module 101, for reconstructing the abnormal framework relation of server end in Java project, The exception class of database layer is processed, the exception class of database layer is inherited the different of service layer Often class；
Delivery module 102, when being used for occurring abnormality, the exception class utilizing database layer will Abnormal data is sent to the exception class of service layer, by the exception class of service layer, abnormal data is straight Connect and be sent to user interface layer.
Visible, during occurring that abnormality post processing is abnormal, different due to database layer The often Similar integral exception class of service layer, it is only necessary to by the exception class of database layer by abnormal data Being sent to the exception class of service layer, the exception class of service layer need not process abnormal data Be converted to the data type that service layer can process, just can directly abnormal data be conveyed directly to User interface layer, is carried out abnormality processing by user interface layer, so without using a lot of try With catch module, it is not necessary to the code of try catch data Layer, need to utilize Java engineering generation Code block quantity in Ma reduces, the readable raising of code, so this device realizes reducing generation The labyrinth of code, improves the readability of code.
Based on said apparatus, concrete, the exception class of database layer includes DBException class, The exception class of service layer includes BusinessException class；DBException class and BusinessException class all inherits the big class of Exception.
Preferably, described device also includes: logic processing module, is used for when logical process, Utilize the exception class of service layer, and the code combining service layer carries out logical process.
Described device also includes: abnormality processing module, is used for utilizing user interface layer directly to different Regular data processes.
This device, by the way of inheriting upper strata Exception with bottom Exception, simplifies In Java engineering code, the quantity of try catch code block, develop cloud computing for Java code Engineering in, can effectively reduce the labyrinth of code, improve the readability of code, thus this It is readable that the advantage of invention includes simply being effectively improved code.
Detailed, self-defined abnormal framework relation in each layer in the restructuring java exploitation of this device, Be reconstructed in java project, the abnormal framework relation of server end, allow bottom Exception Type such as DBException inherits the exception on upper strata, such as: CloudBusinessExcepion.So Upper strata without capturing the exception of lower floor, but directly using it as ought an exception once to more going up Dishing out in such java project for one layer, it is different that the lower floor in back-end code exploitation inherits upper strata extremely Often, need not upper strata codeacquisition after such lower floor exception throws, but be directly spilled over to upper The code on upper strata, upper strata here is service layer, and lower floor is database layer, and upper strata is user Boundary layer.The i.e. exception class of service layer need not that abnormal data is carried out process and is converted to service layer The data type that can process, just directly can be conveyed directly to user interface layer by abnormal data, Abnormality processing is carried out by user interface layer, so without using a lot of try and catch modules, Need not the code of try catch data Layer, need to utilize the code block number in Java engineering code Amount reduces, the readable raising of code,
This device relates in java project development process, by the Exception of bottom not explicitly Try catch, but directly throw last layer.Current layer only need to be absorbed in the logic of current layer, Without the concern for lower floor's impact on this layer.By this device, can be with finite reduction, this layer of generation The code process to bottom exception logic, reduces invalid code, increases the readability of code.
To sum up, a kind of lower floor provided by the present invention is abnormal inherits the abnormality processing side that upper strata is abnormal Method and device, the abnormal framework relation of server end in reconstruct Java project, to database layer Exception class processes, and the exception class of database layer is inherited the exception class of service layer；Occur different Often during state, utilize the exception class of database layer that abnormal data is sent to the exception class of service layer, By the exception class of service layer, abnormal data is conveyed directly to user interface layer.Visible, going out During existing abnormality post processing is abnormal, owing to the exception class of database layer inherits service The exception class of layer, it is only necessary to abnormal data is sent to service layer by the exception class of database layer Exception class, the exception class of service layer need not that abnormal data is carried out process and is converted to service layer's energy Enough data types processed, just directly can be conveyed directly to user interface layer by abnormal data, by User interface layer carries out abnormality processing, so without using a lot of try and catch modules, no Need the code of try catch data Layer, need to utilize the code block quantity in Java engineering code Reduce, the readable raising of code, it is achieved that reduce the labyrinth of code, improve code Readability.
The abnormality processing that upper strata is abnormal is inherited above to a kind of lower floor provided by the present invention is abnormal Method and device is described in detail.The specific case principle to the present invention used herein And embodiment is set forth, the explanation of above example is only intended to help and understands the present invention Method and core concept.It should be pointed out that, those skilled in the art are come Say, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and Modifying, these improve and modify in the protection domain also falling into the claims in the present invention.

Claims (8)

1. the abnormal abnormality eliminating method inheriting upper strata exception of lower floor, it is characterised in that Including:
The abnormal framework relation of server end, the exception class to database layer in reconstruct Java project Process, the exception class of database layer is inherited the exception class of service layer；
When abnormality occurs, utilize the exception class of database layer that abnormal data is sent to service The exception class of layer, is conveyed directly to user interface layer by the exception class of service layer by abnormal data.
2. the method for claim 1, it is characterised in that described database layer different Often class includes DBException class, and the exception class of service layer includes BusinessException class； Described DBException class and BusinessException class all inherit the big class of Exception.
3. the method for claim 1, it is characterised in that also include:
When logical process, utilize the exception class of service layer, and the code combining service layer is carried out Logical process.
4. the method as described in any one in claims 1 to 3, it is characterised in that logical Cross after abnormal data is conveyed directly to user interface layer by the exception class of service layer, also include:
User interface layer is utilized directly abnormal data to be processed.
5. the abnormal exception handling device inheriting upper strata exception of lower floor, it is characterised in that Including:
Inherit module, for reconstructing the abnormal framework relation of server end, logarithm in Java project Process according to the exception class of storehouse layer, the exception class of database layer is inherited the exception class of service layer；
Delivery module, when being used for occurring abnormality, the exception class utilizing database layer will be abnormal Data are sent to the exception class of service layer, are directly passed by abnormal data by the exception class of service layer Deliver to user interface layer.
6. device as claimed in claim 5, it is characterised in that described database layer different Often class includes DBException class, and the exception class of service layer includes BusinessException class； Described DBException class and BusinessException class all inherit the big class of Exception.
7. device as claimed in claim 5, it is characterised in that also include:
Logic processing module, for when logical process, utilizes the exception class of service layer, and ties The code closing service layer carries out logical process.
8. the device as described in any one in claim 5 to 7, it is characterised in that also Including:
Abnormality processing module, is used for utilizing user interface layer directly to process abnormal data.
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