java.lang.NoSuchFieldError: VERSION_2_3_0 报错解决方案

怼烎@ 2021-06-10 20:42 504阅读 0赞

![复制代码][copycode.gif]

java.lang.NoSuchFieldError: VERSION_2_3_0
        at org.apache.struts2.views.freemarker.FreemarkerManager.createConfiguration(FreemarkerManager.java:331)
        at org.apache.struts2.views.freemarker.FreemarkerManager.init(FreemarkerManager.java:282)
        at org.apache.struts2.views.freemarker.FreemarkerManager.getConfiguration(FreemarkerManager.java:269)
        at org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler.init(DefaultDispatcherErrorHandler.java:47)
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:488)
        at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57)
        at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)
        at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4746)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5399)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1114)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1672)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)

![复制代码][copycode.gif]

好吧,今天公司主管看到一个新闻说除了struts 2.3.20.2，2.3.24.2，2.3.28.1几个版本外其他版本都不安全,因而 对旧版进行升级,这个项目不是maven项目,要把jar包一个一个替换,但是不是简单换了jar包就行了,有些旧版特性新版不 一定支持,新版兼容到的旧系统其他jar不一定支持,所以升级也是一个技术活啊。。。简单解决一个百度上好像都没人讨论 过的一个版本问题,这个版本问题的解决方案是要替换freemarker的包到freemarker-2.3.23.jar,也就是最高版本,同时 也提醒自己遇到问题一定不要慌,要根据出错提示分步进行解决.技术上的问题都是有办法解决的,要安静的思考一下解决方案.

# [struts2更新版本操作有关事项备注][struts2] #

**struts2更新版本操作有关事项备注，**

**更新主要jar包：struts2-convention-plugin-version，struts2-core-version, struts2-spring-plugin-version  **

**依赖jar包:xwork-core-version**

**报错应更新有关jar包: freemarker-verson，log4j-version**

**mevan实例：**

![复制代码][copycode.gif]

<dependency>
                <groupId>org.apache.struts</groupId>
                <artifactId>struts2-core</artifactId>
                
                <version>2.3.24.1</version>
                <exclusions>
                    <exclusion>
                        <groupId>com.sun</groupId>
                        <artifactId>tools</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.apache.struts</groupId>
                <artifactId>struts2-spring-plugin</artifactId>
                
                <version>2.3.24.1</version>
            </dependency>
            <dependency>
                <groupId>org.apache.struts</groupId>
                <artifactId>struts2-convention-plugin</artifactId>
                
                <version>2.3.24.1</version>
            </dependency>
            <dependency>
                <groupId>org.freemarker</groupId>
                <artifactId>freemarker</artifactId>
                <version>2.3.23</version>
            </dependency>
    
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
    
              </dependency>

![复制代码][copycode.gif]

**xwork-core-version此包不更新涉及报错：**

![复制代码][copycode.gif]

<filter>
           <filter-name>StrutsPrepareFilter</filter-name>
           <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>
        </filter>
        <filter>
           <filter-name>StrutsExecuteFilter</filter-name>
           <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class>
        </filter>

![复制代码][copycode.gif]

**此配置文件 类丢失错误**

**freemarker-verson，log4j-version 包不更新涉及报错：**

![复制代码][copycode.gif]

[copycode.gif]: /images/20210527/680bb7a3df424519b2d73957726f42b0.png
[struts2]: http://www.cnblogs.com/wangxuerui/p/5292228.html