struts2.3.33升级到2.5.30

1、struts2.5.30 jar包下载

https://struts.apache.org/download.cgi

2、jar包

• struts2核心包替换
  struts2-convention-plugin-2.3.33.jar ->struts2-convention-plugin-2.5.30.jar
  struts2-dojo-plugin-2.3.33.jar (删除)
  struts2-jasperreports-plugin-2.3.33.jar (删除)
  struts2-json-plugin-2.3.33.jar -> struts2-json-plugin-2.5.30.jar
  struts2-rest-plugin-2.3.24.1.jar -> struts2-rest-plugin-2.5.30.jar
  struts2-spring-plugin-2.3.33.jar -> struts2-spring-plugin-2.5.30.jar
  javassist-3.12.0.GA.jar -> javassist-3.18.1-GA.jar
  log4j-1.2.17.jar -> log4j-api-2.12.4.jar
  ognl-3.0.19.jar-> ognl-3.1.29.jar
  xml-apis.jar-> xml-apis-1.0.b2.jar
  xwork-core-2.3.33.jar(删除)
  cglib-2.2.jar -> cglib-3.1.jar
  xstream-1.2.2.jar -> xstream-1.4.17.jar
  jackson-annotations-2.10.5.jar、jackson-core-2.10.5.jar、jackson-databind-2.10.5.1.jar(新增)
  commons-lang3-3.2.jar->commons-lang3-3.8.1.jar

3、web.xml

<filter-class>
    org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
</filter-class>

StrutsPrepareAndExecuteFilter类包名变更

<filter-class>
    org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
</filter-class>

4、struts.xml修改

替换头

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
        "http://struts.apache.org/dtds/struts-2.5.dtd">

添加strict-method-invocation="false"和<global-allowed-methods>regex:.*</global-allowed-methods>

    <bean name="customJson" class="org.apache.struts2.rest.handler.HtmlHandler" type="org.apache.struts2.rest.handler.ContentTypeHandler"/>
<package name="tdefault" namespace="/" extends="json-default" strict-method-invocation="false">
...
<global-results>
      ...
    <result name="json" type="json">
    <param name="noCache">true</param>
        <param name="ignoreHierarchy">false</param>
        <param name="contentType">text/plain</param>
        <param name="excludeNullProperties">true</param>
    </result>
</global-results>
<global-allowed-methods>regex:.*</global-allowed-methods>

5、 escape="false"属性替换成escapeHtml="false"

6、maxLength属性无效，直接删除

7、 json解析异常

新增了strut2-rest-plugin-2.5.30.jar后,会导致json解析异常，需要在struts.xml中配置json解析bean,然后在struts.properies中配置struts.rest.handlerOverride.json和struts.rest.content.restrictToGET=false
工程中没有struts.properies文件，在config下新建一个struts.properies

//struts2.xml
 <bean name="customJson" class="org.apache.struts2.rest.handler.HtmlHandler" type="org.apache.struts2.rest.handler.ContentTypeHandler"/>

//struts.properies
struts.rest.handlerOverride.json=customJson
struts.rest.content.restrictToGET=false

具体参考https://blog.csdn.net/a_c_c_a/article/details/79920559