No result defined for action com.jmq.java.action.BookAction and result success 解决struts2问题

@TNo result defined for action com.jmq.java.action.BookAction and result success 解决struts2问题OC

No result defined for action com.jmq.java.action.BookAction and result success 解决struts2问题

**关于struts2中出现这样的404问题 首先检查有没有配置过滤器和tomcat有无错误 struts.xml中<result
要配对
其次是execute（）或其他方法中的返回值必须是String类型!

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <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>/*</url-pattern>
    </filter-mapping>
</web-app>

struts.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <package name="book" extends="struts-default">
        <action name="book1" class="com.jmq.java.action.BookAction"  >
            <result name="SUCCESS" >/login.jsp</result>
        </action>
    </package>

</struts>

action.class

public class BookAction extends ActionSupport {
    @Override
    public String execute() throws Exception {
        System.out.println("成功进入struts2");
        System.out.println("hello struts2!!!!");
        return SUCCESS;
    }
    public String login(){
        System.out.println("成功进入struts2");
        System.out.println("hello struts2!!!!");
        return "book";
    }
}

这里只要将SUCCESS改成"success"就可以了