Explanation of the jar package in SSH

When building an SSH framework, we need to introduce some jar packages.

First, let's take a look at the SSH versions we use and the imported jar packages.

Struts2.3.1.2:

Struts2-core-2.3.1.jar

Javassist-3.11.0.GA.jar

Commons-io-2.0.1.jar

Commons-lang-2.5.jar

Commons-fileupload-1.2.2.jar

Xwork-core-2.3.1.2.jar

Freemarker-2.3.18.jar

Ognl-3.0.4.jar

Struts2-spring-plugin-2.3.1.2.jar

 

 Spring2.5.6

Spring. Jar

Commons-logging-1.1.1.jar

Common-annotations.jar

Aspectjrt. Jar

Aspectjweaver. Jar

Cglib-nodep-2.1_3.jar

If you use basicdatasource to configure the database connection, you need to add two packages:

Commons-pool.jar

Commons-dbcp.jar

Hibernate3.6.8

Hibernate3.jar

Hibernate-jpa-2.0-api-1.0.1.jar

Antlr-2.7.6.jar

Commons-collection-3.1.jar

Dom4j-1.6.1.jar

Javassist-3.12.0.GA.jar

Jta-1.1.jar

Slf4j-api-1.6.1.jar

Slf4j-nop-1.6.4.jar

After presenting this bunch of unfamiliar and familiar jar packages, I will explain them one by one:

1) jar package in struts

Jar package name	Function
Struts2-core-2.x.x.jar	Struts2 core jar package
Javassist-3.x.x.GA.jar	An open-source class library for analyzing, editing, and creating Java bytecode (this is also required in hibernate. Just introduce one of them)
Commons-io-2.x.x.jar	Commons project (Commons project is a common public component in Java) Io sub-project, is to handle exceptions
Commons-lang-2.x.jar	Lang Package in Commons project
Commons-fileupload-1.x.x.jar	The file upload package in the Commons project must be added to the file after version struts2.1.6.
Xwork-core-2.x.x.jar	The core jar package of xwork, because struts2 is an upgraded version of webwork, it must be dependent on it (struts2 is built on it)
Freemarker-2.x.x.jar	Support freemarker (struts2 UI tag template written by freemarker), which is also available in webwork
Ognl-3.x.x.jar	Supports the ognl language (object graph Navigation language). The struts2 framework reads and writes object attributes through it, and webwork also supports the ognl Language
Struts2-spring-plugin-2.x.x.jar	Used when struts2 is integrated with spring. After the jar package is introduced, you must specify the struts objectfactory (which can be struts or spring) in struts. xml. Otherwise, the program reports an error.

The version of each jar package is not determined based on struts, but updated based on the version of the corresponding source. Therefore, you can see that the versions of each jar package in a struts version are different. (The same is true for spring and hibernate)

2) jar package in spring 

Jar package name	Function
Spring. Jar	Spring core jar package
Commons-logging-1.x.x.jar	The log package produced by ASF, which is used by the struts2, spring, and hibernate frameworks to support logging of log4j and JDK 1.4 +
Common-annotations.jar	Annotation-supported packages
Aspectjrt. Jar Aspectjweaver. Jar	Support for AOP packages
Cglib-nodep-2.x_x.jar	Packages supporting cglib dynamic proxy
Commons-pool.jar Commons-dbcp.jar	Supports basicdatasource to configure database connections (if you do not need basicdatasource to configure a database, you do not need to introduce it)

3) jar package in hibernate

Jar package name	Function
Hibernate3.jar	Hibernate core jar package
Hibernate-jpa-2.x-api-x.x.x.jar	Support for JPA (Java persistence API) Specifications
Antlr-2.x.x.jar	Language conversion tool, which hibernate uses to convert hql to SQL
Commons-collection-3.x.jar	Subprojects in the Commons project encapsulate collection sets.
Dom4j-1.x.x.jar	The encapsulation of dom4j is used to parse XML files.
Javassist-3.x.x.GA.jar	An open-source class library for analyzing, editing, and creating Java bytecode
Jta-x.x.jar	Hibernate's Transaction Processing
Slf4j-api-x.x.x.jar	Slf4j is a simple facade for log systems. It allows end users to use the desired log system when deploying their applications.
Slf4j-nop-x.x.x.jar	An Implementation of the slf4j-api-x.x.x.jar, this jar package To Go To The slf4j official website to download the slf4j-1.6.4 integration package

 

Explanation of the jar package in SSH