Strut2------配置环境

2021-07-30 09:00:13

1.导入必要的包

2.在src目录下新建struts.xml文件

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

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>

    <!-- 修改后缀 -->

    <constant name="struts.action.extension" value="do,,"/>

    <!-- 注意：后面include进来的xml是无效的 -->

    <include file="servlet.xml"/>

</struts>

3.在src目录下新建servlet.xml文件

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

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>

    <package name="other" namespace="/" extends="struts-default">

        <action name="servlet2" class="context.ServletActionDemo2">

            <result name="success" type="redirect">/index.jsp</result>

        </action>

    </package>

    <package name="default" namespace="/" extends="struts-default">

        <!-- 没有定义<result>的<action>使用这个 -->

        <global-results>

            <result name="none" type="dispatcher">/index.jsp</result>

        </global-results>

        <!-- 局部结果界面  -->

        <action name="servlet" class="context.ServletActionDemo">

            <result name="success">/index.jsp</result>

        </action>

        <!-- <action name="servlet2" class="context.ServletActionDemo2">

        </action> -->

        <action name="servlet3" class="context.ServletActionDemo3">

        </action>

        <action name="servlet3" class="context.ServletActionDemo3">

        <!-- type的默认值是dispatcher：请求转发，redirect：重定向，url地址显示的是界面地址 -->

        <!-- type="chain"时是action跳转action，而且跳转的action需要写在另一个package里面,如servlet2 -->

            <result name="none" type="chain">servlet2</result>

        </action>

　　　　 <!-- 这里只测试了这个action，其余的没有测 -->

        <action name="login" class="context.LoginAction">

            <result name="success" type="dispatcher">/index.jsp</result>

        </action>

        <action name="login2" class="context.LoginAction2">

            <result name="success" type="redirect">/index.jsp</result>

        </action>

    </package>

</struts>

4.配置web.xml文件

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

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <display-name>MyFirst</display-name>

  <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>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

</web-app>

5.在src目录下新建context包，里面新建类文件LoginAction.java(其他的没有一一列出来喔)

public class LoginAction extends ActionSupport{

    @Override

    public String execute(){

        //HttpServletRequest request = ServletActionContext.getRequest();

        return SUCCESS;

    }

}

6.新建index.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>主界面</title>

  </head>

  <body>

    <a href="${pageContext.request.contextPath}/login">跳转login  Servlet</a>

    <h1>${pageContext.request.contextPath}</h1>

  </body>

</html>

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