struts2.5 使用感叹号和通配符实现动态方法调用无效的问题及解决!
作者:互联网
https://blog.csdn.net/zhixiandianji/article/details/52576742
先说 struts2.5 使用感叹号实现动态方法调用的问题,使用通配符的方式出现的问题跟这一样!
在 struts2.3 的版本中,我们通常这么配置 struts.xml 文件:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="default" namespace="/" extends="struts-default">
<result>/result.jsp</result>
<result name="add">/add.jsp</result>
<result name="update">/update.jsp</result>
</action>
</package>
<constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>
</struts>
HelloWorldAction类如下:
package com.imooc.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloWorldAction extends ActionSupport {
public String add(){
return "add";
}
public String update(){
return "update";
}
@Override
public String execute() throws Exception {
System.out.println("执行Action");
return SUCCESS;
}
}
这样在 struts2.3 上能够成功,但在 struts2.5 上却无论如何定位不到 http://localhost:8888/HelloWorld/helloworld!add.action,会发生如下错误:
HTTP Status 404 - Method add for action helloworld is not allowed!
type Status report
message Method add for action helloworld is not allowed!
description The requested resource is not available.
Apache Tomcat/7.0.70
搜了半天,有说是要添加
原来是 struts2.5 为了增加安全性,在 struts.xml 添加了这么个属性:
同时要注意,struts.xml 的解析版本要为 2.5,即头部信息应为:
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
最后,struts.xml 应该为:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
<package name="default" namespace="/" extends="struts-default">
<global-allowed-methods>regex:.*</global-allowed-methods>
<action name="helloworld" class="com.imooc.action.HelloWorldAction">
<result>/result.jsp</result>
<result name="add">/add.jsp</result>
<result name="update">/update.jsp</result>
</action>
</package>
<constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>
</struts>
同样,使用通配符实现动态方法调用时,
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
<package name="default" namespace="/" extends="struts-default">
<global-allowed-methods>regex:.*</global-allowed-methods>
<action name="helloworld_*" method="{1}" class="com.imooc.action.HelloWorldAction">
<result>/result.jsp</result>
<result name="add">/{1}.jsp</result>
<result name="update">/update.jsp</result>
</action>
</package>
<constant name="struts.enable.DynamicMethodInvocation" value="false"></constant>
</struts>
标签:xml,通配符,update,struts2.5,add,jsp,感叹号,public 来源: https://www.cnblogs.com/tieway59/p/10996124.html