【例】实现添加用户功能
第一步：创建action类
package com.dwx.actions;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.struts2.interceptor.ServletRequestAware;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class AddUserAction extends ActionSupport implements ServletRequestAware{
private String username;
private String password;
private String name;
private HttpServletRequest request;
private HttpSession session;
private ServletContext application;
@Override
public void setServletRequest(HttpServletRequest request) {
this.request=request;//获取request对象
this.session=request.getSession();//获取Session对象
this.application=session.getServletContext();//获取application对象
}
@Override
public String execute() throws Exception {
request.setAttribute("username", username);
session.setAttribute("password", password);
application.setAttribute("name", name);
return SUCCESS;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
第二步：配置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="user" extends="struts-default" namespace="/">
<action name="adduser" class="com.dwx.actions.AddUserAction">
<result name="success">/user_list.jsp</result>
</action>
</package>
</struts>
第三步：user_add.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>添加用户信息</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<center>
<s:form action="adduser" method="post">
<s:textfield name="username" label="用户名"></s:textfield>
<s:password name="password" label="密码"></s:password>
<s:textfield name="name" label="真实姓名"></s:textfield>
<s:submit value="添加"></s:submit>
</s:form>
</center>
</body>
</html>
第四步：user_list.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>用户列表</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
table {
border-collapse:collapse;
text-align: center;
}
</style>
</head>
<body>
<center>
<table cellpadding="0" cellspacing="0" width="30%" align="center" border="1">
<tr>
<th>用户名</th>
<th>密码</th>
<th>真实姓名</th>
</tr>
<tr>
<td><s:property value="#request.username" /></td>
<td><s:property value="#session.password" /></td>
<td><s:property value="#application.name" /></td>
</tr>
</table>
</center>
</body>
</html>
效果：
添加用户
显示用户列表
