Struts2配置介绍

ゞ浴缸里的玫瑰 2023-06-01 12:56 16阅读 0赞

1、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.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>*.action</url-pattern>
        </filter-mapping>
    
        <welcome-file-list>
            <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    </web-app>

2、Struts2.xml（该配置文件的名称固定，不能修改。且只能放于src下）

<?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">
            
            <action name="hello" class="cn.ht.action.HelloAction">
                
                <result name="success" type="redirect">hello.jsp</result>
            </action>
        </package>
    
    
    </struts>

3、Struts2案例：

*  新建项目
 *  将lib移到WEB-INF目录下（手动导入必要且正确的jar包，否则会报Exception starting filter struts2）
 *  配置 web.xml--配置 struts2 的核心过滤器

*   配置 struts.xml

<?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">
            
            <action name="login" class="cn.ht.action.LoginAction">
                <result name="success">/success.jsp</result>
                <result name="failed">/login.jsp</result>
            </action>
        </package>
    </struts>

*  在web目录下创建login.jsp
    
    注：action 的提交地址.action 是扩展名，默认为.action；action 的扩展名和 web.xml 中配  
    置的 struts2 的核心过滤器相匹配；也就是如果表单中提交的地址以.action 结尾，那么在配  
    置 filter 的 url-pattern 时一定是: <url-pattern>\*.action</url-pattern>;

<%--
      Created by IntelliJ IDEA.
      User: Administrator
      Date: 2019-8-13
      Time: 10:01
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>STRUTS2</title>
    </head>
    <body>
    <form action="login.action" method="post">
        用户名:<input type="text" name="name"/><br>
        密码:<input type="password" name="pwd"/><br>
        <input type="submit" value=" 登录 "/>
    </form>
    </body>
    </html>

*  在src下创建LoginAction 类 (注：LoginAction 中的属性名和表单中表单元素的名称要一致)

package cn.ht.action;
    
    /**
     * @Classname LoginAction
     * @Description TODO
     * @Date 2019-8-13 10:04
     * @Created by Administrator
     */
    public class LoginAction {
        private String name;
        private String pwd;
        //处理方法
        public String execute(){
            if("zhang".equals(name)&&"1234".equals(pwd)){
                return "success";
            }else{
                return "failed";
            }
        }
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public String getPwd() {
            return pwd;
        }
        public void setPwd(String pwd) {
            this.pwd = pwd;
        }
    }

*  创建success.jsp

<%--
      Created by IntelliJ IDEA.
      User: Administrator
      Date: 2019-8-13
      Time: 12:07
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <h1>登录成功！！！</h1>
    </body>
    </html>

*  访问测试：

![1179853-20190813104428189-190347590.png][]

*   输入信息-登录

![1179853-20190813135106608-273078831.png][]

整体目录结构如下：

![1179853-20190813135138558-2107865426.png][]

转载于:https://www.cnblogs.com/Anemia-BOY/p/11341772.html

[1179853-20190813104428189-190347590.png]: /images/20230601/045427f0d07a4b3d85419e661f67e69d.png
[1179853-20190813135106608-273078831.png]: /images/20230601/f9609844e6ee4315b7371ed69a2e8cd5.png
[1179853-20190813135138558-2107865426.png]: /images/20230601/f06f077d40144df6a968b83411f4643b.png