struts2升级到Struts 2.3.15.1的步骤
新闻地址:http://www.iteye.com/news/28053
因此我升级了下当前项目的struts版本,原来是2.2.3,现在升级到2.3.15.1
首先下载jar包:http://struts.apache.org/download.cgi#struts23151
Essential Dependencies Only:
struts-2.3.15.1-lib.zip (19MB) [PGP] [MD5]
从下载的jar包拷贝核心包:
antlr-2.7.2
aopalliance-1.0
asm-3.3
asm-commons-3.3
asm-tree-3.3
builder-0.6.2
classworlds-1.1
commons-beanutils-1.8.0
commons-collections-3.1
commons-chain-1.2
commons-digester-2.0
commons-fileupload-1.3
commons-io-2.0.1
commons-lang3-3.1
commons-lang-2.4
commons-logging-1.1.3
commons-logging-api-1.1
commons-validator-1.3.1
freemarker-2.3.19
ognl-3.0.6
struts2-convention-plugin-2.3.15.1
struts2-core-2.3.15.1
struts2-dojo-plugin-2.3.15.1
struts2-jfreechart-plugin-2.3.15.1
struts2-json-plugin-2.3.15.1
struts2-junit-plugin-2.3.15.1
struts2-spring-plugin-2.3.15.1
xwork-core-2.3.15.1
到此先备份原来的所有jar,以防万一……
删除项目WEB-INF/lib下:
asm-3.1
struts2-spring-plugin-2.2.3
struts2-junit-plugin-2.2.3
struts2-json-plugin-2.2.3
struts2-jfreechart-plugin-2.2.3
struts2-dojo-plugin-2.2.3
struts2-core-2.2.3
ognl-2.7.3
freemarker-2.3.15
commons-collections-3.1
commons-io-1.3.2
commons-fileupload-1.2.1
commons-beanutils-1.7.0
commons-validator-1.3.1
xwork-core-2.2.3
最安全的做法:
以核心jar为准,如果在原lib里有同名但不同版本的jar就replace,没有就直接copy,替换方式遵循“谁新替换谁”的原则。
(小插曲:我拷贝了核心jar里的antlr-2.7.2,但是我原来的项目里有antlr-2.7.6,我没注意,结果报java.lang.NoSuchMethodError: antlr.collections.AST.getLine()的错误,删除antlr-2.7.2即可)
对于struts2开头的jar,只要原来有的,都在核心jar里找到替换的版本,没有同名的就不换。
请注意:原lib里的commons-collections、commons-lang、commons-logging要保留。
刷新后(请确保更换lib之前项目是运行无误的…),重新配置tomcat并运行……
如果遇到一些NoSuchMethod或者NotClassFound等等的提示,检查一下是不是误删了原来的某个jar;
如果看到如此提示:
***********************************************************************
* WARNING!!! *
* *
* >>> FilterDispatcher <<< is deprecated! Please use the new filters! *
* *
* This can be a source of unpredictable problems! *
* *
* Please refer to the docs for more details! *
* http://struts.apache.org/2.x/docs/webxml.html *
* *
***********************************************************************
在web.xml里把FilterDispatcher 替换成StrutsPrepareAndExecuteFilter(org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter)
如果看到如此提示:
***********************************************************************
* WARNING!!! *
* *
* >>> ActionContextCleanUp<<< is deprecated! Please use the new filters! *
* *
* This can be a source of unpredictable problems! *
* *
* Please refer to the docs for more details! *
* http://struts.apache.org/2.x/docs/webxml.html *
* *
***********************************************************************
同样是在web.xml里把ActionContextCleanUp替换成StrutsPrepareAndExecuteFilter(org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter)
若原来就配置有StrutsPrepareAndExecuteFilter,则把ActionContextCleanUp去掉。
比如我这里修改后的样子:
- <span style="font-size: 16px;"><!-- STRUTS配置 -->
- <!-- <filter> 升级到2.3.15.1后要去掉
- <filter-name>struts2-cleanup</filter-name>
- <filter-class>
- org.apache.struts2.dispatcher.ActionContextCleanUp
- </filter-class>
- </filter>
- <filter-mapping>
- <filter-name>struts2-cleanup</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping> -->
- <filter>
- <filter-name>struts2</filter-name>
- <filter-class>
- org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
- </filter-class>
- </filter>
- <filter-mapping>
- <filter-name>struts2</filter-name>
- <url-pattern>*.action</url-pattern>
- <dispatcher>REQUEST</dispatcher>
- <dispatcher>FORWARD</dispatcher>
- </filter-mapping>
- </span>
关于升级后的web.xml配置请参考: