CN103942051B - Application dispositions method and device based on PAAS platforms - Google Patents
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Abstract
The invention discloses a kind of application dispositions method and device based on PAAS platforms, the method includes：The constant pool for treating the binary file of the application of deployment is scanned, and the title of the general class cited in the binary file is determined from the constant pool；For the title of each general class determined, the title of the proxy class corresponding with the title of the general class is searched in list is replaced, and using the title of the general class in the title replacement constant pool of the proxy class for finding；Wherein, the sentence of dedicated classes in the PAAS platforms for calling corresponding general class corresponding is packaged with proxy class；In the replacement list, the binary length of the title of corresponding general class and proxy class is equal；According to the binary file that substituted for the title of class in the constant pool, dispose described application and run in the PAAS platforms.Using the present invention, it is possible to reduce risk occur in the change amount of bottom code, reduction BUG.
Description
Technical field
The present invention relates to internet arena, more particularly to a kind of application dispositions method and device based on PAAS platforms.
Background technology
With the development of cloud computing platform technology, server platform or development environment are supplied to into user's as service
PAAS（Platform as a Service, platform are serviced）Service mode is used widely.User is by application success portion
After affixing one's name to into PAAS platforms, you can be serviced using the cloud computing application engine in PAAS platforms, such as, SAE（Sina App
Engine, Sina's application engine）Service.
Specifically, user can be uploaded to the compressed package of the java binary files of application to be disposed in PAAS platforms
Server；The server then unzips to the compressed package of upload under assigned catalogue, and the binary file that will be obtained after decompression
Load into internal memory.So, the application to be disposed just can used in PAAS platforms its provide cloud computing application engine
Service.
At present, many existing applications rely primarily on JDK（Java Development ' s Kit, Java developing instruments
Bag）Come what is completed.If moving to existing application and carry out in PAAS platforms deployment operation, need to be carried by PAAS platforms
For proprietary dedicated classes（The class of cloud computing application engine offer is provided herein）, just can be using in PAAS platforms
Cloud computing application engine is serviced.However, existing application is mainly by general class to call existing service.Therefore, in order that
The existing cloud computing application engine service applied in being deployed to after PAAS platforms to use PAAS platforms, generally requires
The JDK codes of the bottom of the application to be disposed are changed, so that the dedicated classes that the application can be provided using PAAS platforms.
And the JDK codes of existing application have usually completed the application code tested.If by the JDK of existing application
The reference of the dedicated classes provided for PAAS platforms by code carries out the reference code revision of general class, then it is possible that modification
The situation that JDK codes afterwards cannot be realized after the service in using PAAS platforms, or even as the code changed occurs
Unknown leak BUG.And to ensure that amended JDK codes can be answered using cloud computing by dedicated classes in PAAS platforms
With engine service, then need to carry out substantial amounts of artificial code change and new test for JDK codes, this can not only expend in a large number
Man power and material, it is also possible to the problem that can further cause other new, there is larger BUG risks.
Therefore, it is necessary to provide a kind of change amount less, and the low application moving method of BUG risks so that it is existing to apply
Cloud computing application engine can be called after being deployed in PAAS platforms to service.
The content of the invention
A kind of application dispositions method based on PAAS platforms and device are embodiments provided, to reduce bottom generation
The change amount of code simultaneously reduces BUG and risk occurs.
According to an aspect of the invention, there is provided a kind of application dispositions method based on PAAS platforms, including：
The constant pool for treating the binary file of the application of deployment is scanned, and determines that this two enters from the constant pool
The title of the general class cited in file processed；
For the title of each general class determined, search in list is replaced corresponding with the title of the general class
The title of proxy class, and using the title of the general class in the title replacement constant pool of the proxy class for finding；Wherein, generation
The sentence that the platform for calling corresponding general class corresponding services dedicated classes in PAAS platforms is packaged with reason class；It is described
The binary length for replacing the title of corresponding general class and proxy class in list is equal；
According to the binary file that substituted for the title of class in the constant pool, described application in the PAAS platforms is disposed
Middle operation.
It is preferred that the basis substituted for the binary file of the title of class in the constant pool, described application is disposed
Run in the PAAS platforms, specifically include：
The PAAS platforms substituted for the binary file institute of in the constant pool title of class according to which to the application
The title of the proxy class of reference, calls corresponding proxy class, and the proxy class further calls corresponding general class corresponding
Dedicated classes in PAAS platforms.
It is preferred that specific character of the first byte section of the title for replacing the proxy class in list for length-specific,
The respective byte section content of the title of the corresponding general class of remaining byte section is identical.
It is preferred that the length-specific is 4；And
Dedicated classes in the PAAS platforms are specially the class that the cloud computing application engine in PAAS platforms is provided.
It is preferred that there is the specific separator of identical between each byte section of the title of the general class and proxy class.
It is preferred that before the constant pool of the binary file of the application for treating deployment is scanned, also including：
Described in uploading, the compressed package of the binary file of application to be disposed is to the server in the PAAS platforms；
The server periodically unzips to the compressed package of upload under assigned catalogue；And
The constant pool of the binary file of the application for treating deployment is scanned, specially：
The constant pool of the binary file of the application to be disposed stored under the assigned catalogue is scanned.
According to another aspect of the present invention, a kind of application deployment device based on PAAS platforms is additionally provided, including：
Scan module, the constant pool for treating the binary file of the application of deployment are scanned, from the constant pool
In determine the title of general class cited in the binary file；
Replacement module, the title of each general class for determining for the scan module are looked in list is replaced
The title of the proxy class corresponding with the title of the general class is looked for, and the title using the proxy class for finding replaces the constant
The title of the general class in pond；Wherein, it is packaged with proxy class in the PAAS platforms for calling corresponding general class corresponding
The sentence of dedicated classes；In the replacement list, the binary length of the title of corresponding general class and proxy class is equal；
Deployment module, for substituted for the binary system obtained after the title of class in the constant pool according to the replacement module
File, disposes described application and runs in the PAAS platforms.
It is preferred that the deployment module is specifically for the application, substituted for the name of class in the constant pool according to which
The title of the proxy class cited in the binary file of title, calls corresponding proxy class, and the proxy class is further called corresponding
The corresponding PAAS platforms of general class in dedicated classes.
It is preferred that specific character of the first byte section of the title for replacing the proxy class in list for length-specific,
The respective byte section content of the title of the corresponding general class of remaining byte section is identical.
It is preferred that described device also includes：
Pretreatment module, it is the binary system of the application respectively to be disposed uploaded in the PAAS platforms is literary for periodicity
The compressed package of part is unziped under assigned catalogue；And
The scan module is specifically for the binary file of the application to be disposed to storing under the assigned catalogue
Constant pool is scanned.
In the technical scheme of the embodiment of the present invention, in advance for each dedicated classes in PAAS platforms, the dedicated classes are sealed
Dress up the binary length identical proxy class of the binary length of title and the title of general class and be stored in replacement list.
For application to be disposed, will can replace in list with determine it is logical cited in the binary file of the application to be disposed
With the title of the corresponding proxy class of the title of class, replace into the binary file, and according to substituted for class in constant pool
Binary file after title, disposes to be disposed the applying and runs in PAAS platforms.So, application to be disposed is being entered
Before row deployment, modify without the need for the bottom code to the application, binary length is carried out during deployment equal
The replacement of the title of class, it is possible to realize that the application to be disposed operationally can be called in PAAS platforms by proxy class
While cloud computing application engine is serviced, change amount is greatly reduced, and reduces the risk of BUG appearance.
Description of the drawings
Schematic flow sheets of the Fig. 1 for the application dispositions method based on PAAS platforms of the embodiment of the present invention；
Cut-away views of the Fig. 2 for the application deployment device based on PAAS platforms of the embodiment of the present invention.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, referring to the drawings and preferred reality is enumerated
Example is applied, the present invention is described in more detail.However, it is necessary to explanation, many details listed in specification are only to be
Reader is made to have a thorough explanation to the one or more aspects of the present invention, even without these specific details can also
Realize the aspects of the invention.
The term such as " module " used in this application, " system " is intended to include the entity related to computer, for example but not limits
In hardware, firmware, combination thereof, software or executory software.For example, module can be, it is not limited to：Process
Process, processor, object, executable program, the thread for performing, program and/or the computer run on device.For example, count
The application program and this computing device run on calculation equipment can be module.One or more modules may be located at executory
In one process and/or thread.
The present inventor is it is considered that can be by general class cited in the java binary files of existing application
The dedicated classes provided by PAAS platforms are replaced with, so that when application deployment are run on PAAS platforms, PAAS can be passed through
The dedicated classes provided by platform are come using the service in PAAS platforms.
If however, general class cited in the binary file of existing application is replaced with what PAAS platforms were provided
Dedicated classes, it is possible that amended JDK codes cannot be main reason is that using the situation of the service in PAAS platforms：
General class cited in the binary file of existing application is primarily present in the constant pool of binary file, and constant
Pond is usually shrunk type structure, that is to say, that in constant pool, the length of content has strict specification；And two with existing application
In binary file, the title of cited general class is compared, and the length of the title of the dedicated classes provided by PAAS platforms there occurs change
Change.For example, the character string constant " java/io/FileOutputStream " of quoting general class is substituted for and quotes dedicated classes
Character string constant " com/sina/sae/StorageFileOutputStream ", its binary length substantially increase.So, exist
When compiling the dedicated classes after replacing, the content in the constant pool for obtaining may be because the binary length of character string constant be elongated
Belong to illegal contents, cause virtual machine to read the bytecode and fail, finally so that amended JDK codes nothing in PAAS platforms
Method is normally run, it could even be possible to some unknown BUG occur.
Although, it is existing can be by general class cited in the binary file of existing application be being replaced with PAAS
After the dedicated classes provided by platform, the subsequent content and original JDK codes of the constant pool content of the general class will be quoted
Illegal contents are occurred without in constant pool in the binary file that subsequent content is moved to ensure existing application in turn, this is not
Substantial amounts of manpower is only expended, and change amount is very big, increase the probability of occurrence of BUG risks.
Therefore, the present inventor is it is considered that normal with original character string to ensure amended character string constant length
The length of amount is consistent, it is to avoid because length change causes the increase of the probability of occurrence of BUG risks, can be directed to every in PAAS platforms
Individual dedicated classes, will further be packaged into the binary system of the binary length of title and the title of general class on the basis of the dedicated classes
Length identical proxy class；Further, by the title of the general class in the binary file of existing application is replaced with
The title of corresponding proxy class, it is possible to which the dedicated classes in corresponding PAAS platforms are further called by proxy class.So, lead to
The bytecode for crossing the title of proxy class is replaced, it is to avoid the character of constant pool in the amended binary file of existing application
The binary length of string constant changes, while realizing that existing application success is deployed in PAAS platforms, also big
The change amount of source code is reduced greatly, and then reduces BUG risks.
Describe technical scheme below in conjunction with the accompanying drawings in detail.
In the embodiment of the present invention, during application to be disposed is deployed to PAAS platforms, it is necessary first to receive in advance
In collection this area, the name of general class is referred to as the title of the general class of the embodiment of the present invention, then for institute in PAAS platforms specially
Each dedicated classes having, the binary length that the dedicated classes are packaged into title are long with the binary system of the title of the general class collected
In replacement list of the degree between identical proxy class, and the title of the title and general class for being stored in proxy class.Wherein, PAAS puts down
In platform, each proprietary dedicated classes specifically refer to the class that the cloud computing application engine in PAAS platforms is provided（Such as, SAE is provided
Class）；The title of proxy class has one-to-one relation with the title of general class；And, to proxy class in PAAS platforms
When being compiled, the dedicated classes packaged by the proxy class can be directly invoked.
In practical application, general class relies primarily on JDK to complete, and its title can include multiple byte sections, each word
There are specific separator, such as "/" between sections；And the content of the first byte section of the title of general class typically adopts specific character
" java ", the length-specific of the specific character is 4.Therefore, it can to consider to make the first byte section in the title of proxy class
Binary length is equal with the length-specific of the specific character of the first byte section in the title of corresponding general class, and accordingly
Ground, the specific separator phase between the specific separator between each byte section of the title of proxy class and each byte section of general class
Together.For example, by the first byte section " java ", replace with " saex "；Meanwhile, remaining byte section in the title of proxy class is right with which
The respective byte section content of the title of the general class answered is identical.For example, if general class is respectively：“java/io/
When FileInputStream ", " java/io/FileOutputStream ", " java/net/Socket ", corresponding proxy class
Respectively：“saex/io/FileInputStream”、“saex/io/FileOutputStream”、“saex/net/
Socket”.Further, when proxy class " saex/io/FileOutputStream " is run, can directly invoke in PAAS platforms
Dedicated classes " com/sina/sae/StorageFileOutputStream ".
So, the bytecode of the first byte section of general class is changed, can have both ensured amended JDK codes and source code
In constant pool content binary length it is identical, occur BUG's in the invoked procedure for reducing the dedicated classes in PAAS platforms
Risk, and change amount is few.
Title based on above-mentioned proxy class and the replacement list between the title of general class, provided in an embodiment of the present invention one
Plant the application dispositions method based on PAAS platforms, idiographic flow, as shown in figure 1, comprising the steps：
S101：The constant pool for treating the binary file of the application of deployment is scanned, determine from constant pool this two
The title of the general class cited in binary file.
Specifically, can be after the java binary files for obtaining application to be disposed, to the normal of the binary file
Amount pond is scanned, and the title of all general class cited in the binary file is determined from constant pool.Practical application
In, the two of application to be disposed can be uploaded before the constant pool for treating the binary file of application of deployment is scanned
The compressed package of binary file is to the server in PAAS platforms；Then, the compressed package solution that server will periodically can be uploaded
It is pressed onto under assigned catalogue.So, PAAS platforms can be to the binary file of application to be disposed that stores under assigned catalogue
Constant pool is scanned.
S102：For the title of each general class determined, the title phase with the general class is searched in list is replaced
The title of corresponding proxy class.
Specifically, it is previously stored between the title of title and general class of proxy class in PAAS platforms in replacing list
Corresponding relation is replaced, therefore, for the title of each general class determined by step S101, can be successively from replacement list
In find out the title of the proxy class corresponding with the title of the general class.Wherein, for each proxy class replaced in list,
Be packaged with the proxy class in PAAS platforms call it is special in the PAAS platforms corresponding with the corresponding general class of the proxy class
With the sentence of class；And it is equal to replace the binary length of the title of corresponding general class and proxy class in list.More preferably, replace
Specific character of first byte section of the title of the class that the cloud computing application engine changed in list is provided for length-specific, remaining word
The respective byte section content of the title of the corresponding general class of sections is identical.It is in practical application, logical for what is be not collected
With class, it is also possible to add to replace list in, and by PAAS platforms cloud computing application engine provide dedicated classes in the receipts
The proxy class formed after the corresponding special class wrapper of the general class of collection is added to replacing relevant position in list.
S103：It is for the title of each general class determined, corresponding with the title of the general class using what is found
Proxy class title replace constant pool in the general class title.
Specifically, the title of each general class determined can be related to all in the constant pool for scanning
The bytecode of the title of the general class replaces with from replacement list agency find, corresponding with the title of the general class
The bytecode of the title of class.For example, by the general class determined：" java/io/FileOutputStream " replaces with proxy class
" saex/io/FileOutputStream ", " java/io/FileInputStream " replace with " saex/io/
FileInputStream ", " java/net/Socket " replace with " saex/net/Socket ".So, each is being determined
General class title, after replacing with the title of corresponding proxy class, replace class title after binary file operation
Cheng Zhong, when running the proxy class after replacing in the binary file, will can call the cloud computing application packaged by the proxy class
The dedicated classes that engine is provided；That is, the cloud computing application engine that application to be disposed can pass through in PAAS platforms is provided
Dedicated classes using the service in PAAS platforms.
S104：According to the binary file that substituted for the title of class in constant pool, dispose this and to be disposed apply in PAAS
Run in platform.
Specifically, this can be treated according to the binary file for having completed the replacement of the title of proxy class in constant pool
The application of deployment is run in being deployed in PAAS platforms.Due to replacing the proxy class in list specifically by provided in PAAS platforms
Special class wrapper, so, PAAS platforms treat the application of deployment, substituted for the title of class in constant pool according to which
The title of the proxy class cited in binary file, calls corresponding proxy class；The proxy class further calls corresponding leading to
With the dedicated classes in the corresponding PAAS platforms of class, that is, the class for calling the cloud computing application engine in PAAS platforms to provide.So,
This, can be by the dedicated classes in PAAS platforms come using carrying in PAAS platforms after the application disposed is deployed in PAAS platforms
For service.Certainly, the binary system text in constant pool after the title of class can also be replaced in practical application, before runtime,
Part is stored in the internal memory in PAAS platforms.
Based on the above-mentioned application dispositions method based on PAAS platforms, the embodiment of the present invention additionally provides a kind of flat based on PAAS
The application deployment device of platform, as shown in Fig. 2 specifically including：Scan module 201, replacement module 202, deployment module 203.
Wherein, scan module 201 is used for the constant pool of binary file of the application for treating deployment and is scanned, from constant
The title of the general class cited in the binary file is determined in pond.
The title of each general class of the replacement module 202 for determining for scan module 201, looks in list is replaced
The title of the proxy class corresponding with the title of the general class is looked for, and the title using the proxy class for finding replaces what is scanned
The title of the general class in constant pool.Wherein, it is packaged with the PAAS for calling corresponding general class corresponding to put down in proxy class
The sentence of the dedicated classes in platform；The binary length for replacing the title of corresponding general class and proxy class in list is equal.
As a kind of more excellent embodiment, in order to reduce the change amount of bottom code, the proxy class in replacement list
Specific character of first byte section of title for length-specific, the respective byte section of the corresponding general class of remaining byte section
Content is identical.So, in the replacement process of the title of general class, change the first byte section, change amount less, and will not draw
The change of the length of character string constant is played, the appearance risk of BUG is reduced.
Deployment module 203 is literary for substituted for the binary system obtained after the title of class in constant pool according to replacement module 202
Part, disposes to be disposed the applying and runs in PAAS platforms.
Specifically, deployment module 203 for application to be disposed, can substituted for constant according to which in PAAS platforms
The title of the proxy class cited in binary file in pond after the title of class, calls corresponding proxy class, and the proxy class to enter
And the cloud computing application engine in the dedicated classes in the PAAS platforms for calling corresponding general class corresponding, i.e. PAAS platforms
The class of offer.
In the embodiment of the present invention, specifically how to carry out with regard to each module in the application deployment device based on PAAS platforms
The deployment of application to be disposed, is referred to the concrete grammar of above-mentioned flow process.
More preferably, can also be included based on the application deployment device of PAAS platforms：Pretreatment module.Pretreatment module is used for
Periodically the compressed package of the binary file of the application respectively to be disposed uploaded in PAAS platforms is unziped under assigned catalogue.
Correspondingly, constant pool of the scan module 201 specifically for the binary file of the application to be disposed to storing under assigned catalogue
It is scanned.
In the embodiment of the present invention, specifically how to carry out with regard to each module in the application deployment device based on PAAS platforms
The deployment of application to be disposed, is referred to the concrete grammar of above-mentioned flow process.
In technical scheme, can in advance for each dedicated classes in PAAS platforms, by the special class wrapper
Into the title of binary length and the general class of title binary length identical proxy class and be stored in replacement list.Enter
And, for application to be disposed, will can replace in list with determine cited in the binary file of the application to be disposed
General class the corresponding proxy class of title title, replace into the binary file, and according to replacing after the title of class
Binary file, dispose the to be disposed application and run in PAAS platforms.So, application to be disposed is being disposed
Before, modify without the need for the bottom code to the application, the name of the equal class of binary length is carried out during deployment
The replacement of title, it is possible to realize that the application to be disposed operationally can call the cloud computing in PAAS platforms by proxy class
While application engine is serviced, change amount is greatly reduced, and reduces the risk of BUG appearance.
One of ordinary skill in the art will appreciate that all or part of step in realizing above-described embodiment method can be
Instruct related hardware to complete by program, the program can be stored in a computer read/write memory medium, such as：
ROM/RAM, magnetic disc, CD etc..
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of application dispositions method based on PAAS platforms, it is characterised in that include：
The constant pool for treating the binary file of the application of deployment is scanned, and the binary system text is determined from the constant pool
The title of the general class cited in part；
For the title of each general class determined, the agency corresponding with the title of the general class is searched in list is replaced
The title of class, and using the title of the general class in the title replacement constant pool of the proxy class for finding；Wherein, proxy class
In be packaged with the sentence that the platform for calling corresponding general class corresponding services dedicated classes in PAAS platforms；The replacement
In list, the binary length of the title of corresponding general class and proxy class is equal；Wherein, dedicated classes in the PAAS platforms
The class that cloud computing application engine specially in PAAS platforms is provided；
According to the binary file that substituted for the title of class in the constant pool, dispose described application and transport in the PAAS platforms
OK.
2. the method for claim 1, it is characterised in that the basis substituted for the two of the title of class in the constant pool
Binary file, disposes described application and runs in the PAAS platforms, specifically include：
The PAAS platforms to the application, according to cited in which substituted for the binary file of the title of class in the constant pool
Proxy class title, call corresponding proxy class, the PAAS that the proxy class further calls corresponding general class corresponding
Dedicated classes in platform.
3. the method for claim 1, it is characterised in that the first byte of the title of the proxy class in the replacement list
Specific character of the section for length-specific, the respective byte section content phase of the title of the corresponding general class of remaining byte section
Together.
4. method as claimed in claim 3, it is characterised in that the length-specific is 4.
5. method as claimed in claim 4, it is characterised in that between each byte section of the title of the general class and proxy class
There is the specific separator of identical.
6. the method as described in claim 1-5 is arbitrary, it is characterised in that in the binary file of the application for treating deployment
Constant pool be scanned before, also include：
Described in uploading, the compressed package of the binary file of application to be disposed is to the server in the PAAS platforms；
The server periodically unzips to the compressed package of upload under assigned catalogue；And
The constant pool of the binary file of the application for treating deployment is scanned, specially：
The constant pool of the binary file of the application to be disposed stored under the assigned catalogue is scanned.
7. device is disposed in a kind of application based on PAAS platforms, it is characterised in that included：
Scan module, the constant pool for treating the binary file of the application of deployment are scanned, from the constant pool really
Make the title of the general class cited in the binary file；
Replacement module, the title of each general class for determining for the scan module, replace list in search with
The title of the corresponding proxy class of the title of the general class, and the title using the proxy class for finding replaced in the constant pool
The title of the general class；Wherein, it is packaged with proxy class special in the PAAS platforms for calling corresponding general class corresponding
The sentence of class；In the replacement list, the binary length of the title of corresponding general class and proxy class is equal；Wherein, it is described
In PAAS platforms, dedicated classes are specially the class that the cloud computing application engine in PAAS platforms is provided；
Deployment module, for substituted for the binary system obtained after the title of class in constant pool text according to the replacement module
Part, disposes described application and runs in the PAAS platforms.
8. device as claimed in claim 7, it is characterised in that
The deployment module is specifically for the application, substituted for the binary system text of the title of class in the constant pool according to which
The title of the proxy class cited in part, calls corresponding proxy class, and the proxy class further calls corresponding general class relative
Dedicated classes in the PAAS platforms answered.
9. device as claimed in claim 7, it is characterised in that the first byte of the title of the proxy class in the replacement list
Specific character of the section for length-specific, the respective byte section content phase of the title of the corresponding general class of remaining byte section
Together.
10. device as claimed in claim 8, it is characterised in that also include：
Pretreatment module, for periodicity by the binary file of the application respectively to be disposed uploaded in the PAAS platforms
Compressed package is unziped under assigned catalogue；And
Constant of the scan module specifically for the binary file of the application to be disposed to storing under the assigned catalogue
Pond is scanned.
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| CN106802820A (en) * | 2017-02-04 | 2017-06-06 | 山东中创软件商用中间件股份有限公司 | A kind of enterprise-level application directory deployment method and device |
| CN108614978B (en) * | 2018-04-19 | 2022-04-15 | 中国平安人寿保险股份有限公司 | Compressed packet checking method and device, storage medium and terminal |
| CN111352653B (en) * | 2020-03-06 | 2023-07-14 | 中国工商银行股份有限公司 | System development method based on PaaS cloud platform server and server |
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| CN101963914A (en) * | 2010-11-12 | 2011-02-02 | 南京大学 | Byte-code file reconstruction-based Java type online updating method |
| CN102736905A (en) * | 2011-04-12 | 2012-10-17 | 深圳市金蝶中间件有限公司 | Method for dynamically replacing field in classes |
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