(04)Struts2_helloWorld

水深无声 2021-10-06 14:06 369阅读 0赞

### **需求**  ###

#### 借用前面struts2-01的需求截图 ####

![这里写图片描述][20160901114810601]

### **编码** ###

![这里写图片描述][20160901144726374]

### **index.jsp** ###

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
    <head>
    </head>
    <body>
        <a href="czy_input.action">进入Input.jsp页面</a>
    </body>
    </html>

### **Input.jsp** ###

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>
      </head>
      <body>
      <form action="czy_save.action" method="post">
           编号：<input type="text" name="dlh"/><br>
           姓名：<input type="text" name="name"/><br>
           部门：<input type="text" name="bmmc"/><br>
           <input type="submit" value="保存"/>
       </form>
      </body>
    </html>

### **Show.jsp** ###

<%@ page language="java" import="java.util.*" pageEncoding="utf-8" contentType="text/html; charset=UTF-8"%>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>
      </head>
      <body>
           ID：${id}<br>
           编号：${ dlh}<br>
           姓名：${ name}<br>
           部门：${ bmmc}<br>
      </body>
    </html>

### **web.xml** ###

<?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>struts2-02</display-name>
        <welcome-file-list>
            <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    
        
        <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 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd">
    <struts>
        
        <package name="helloworld" extends="struts-default" namespace="/">
            
            <action name="czy_input" >
                
                <result >/WEB-INF/page/Input.jsp</result>
            </action>
            <action name="czy_save" class="com.qbz.struts2_02.GG_CZY" method="save">
                <result name="ok">/WEB-INF/page/Show.jsp</result>
            </action>
        </package>
    </struts>

### **GG\_CYZ.java** ###

package com.qbz.struts2_02;
    
    import java.util.UUID;
    
    
    public class GG_CZY { 
        private String id;
        private String dlh;
        private String name;
        private String bmmc;
    
        public String getId() {
            return id;
        }
    
        public void setId(String id) {
            this.id = id;
        }
    
        public String getDlh() {
            return dlh;
        }
    
        public void setDlh(String dlh) {
            this.dlh = dlh;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public String getBmmc() {
            return bmmc;
        }
    
        public void setBmmc(String bmmc) {
            this.bmmc = bmmc;
        }
    
        public GG_CZY(String id, String dlh, String name, String bmmc) {
            super();
            this.id = id;
            this.dlh = dlh;
            this.name = name;
            this.bmmc = bmmc;
        }
    
        public GG_CZY() {
            super();
        }
    
        @Override
        public String toString() {
            return "GG_CZY [id=" + id + ", dlh=" + dlh + ", name=" + name
                    + ", bmmc=" + bmmc + "]";
        }
    
        public String save() {
            if(this.id==null){
                this.id = UUID.randomUUID().toString().replace("-", "");
            }
            return "ok";
        }
    }

#### 至此，使用struts2实现了最简单的网页跳转、后台业务处理等helloWorld功能。 ####

[20160901114810601]: /images/20211006/c9ca5088c78747759b9f86d240c60900.png
[20160901144726374]: /images/20211006/72732f870c90435bb1fe976870c82127.png