使用struts2中s标签查询用户列表信息

首先，在数据创建用户表并插入数据，用jdbc连接数据库。本次案例是使用jsp+struts+jdbc。

1.创建javabean：UserDTO.java

package com.itheima.web.dto;

public class UserDTO {

	private String uid;
	private String uname;
	private String upassword;
	private int upower;
	private String udate;
	private String uaddr;
	private String utel;
	private String urealname;
	private String usex;
	private int udeleteStatic;
	private String userMail;
	
	public String getUid() {
		return uid;
	}
	public void setUid(String uid) {
		this.uid = uid;
	}
	public String getUname() {
		return uname;
	}
	public void setUname(String uname) {
		this.uname = uname;
	}
	public String getUpassword() {
		return upassword;
	}
	public void setUpassword(String upassword) {
		this.upassword = upassword;
	}
	public int getUpower() {
		return upower;
	}
	public void setUpower(int upower) {
		this.upower = upower;
	}
	public String getUdate() {
		return udate;
	}
	public void setUdate(String udate) {
		this.udate = udate;
	}
	public String getUaddr() {
		return uaddr;
	}
	public void setUaddr(String uaddr) {
		this.uaddr = uaddr;
	}
	public String getUtel() {
		return utel;
	}
	public void setUtel(String utel) {
		this.utel = utel;
	}
	public String getUrealname() {
		return urealname;
	}
	public void setUrealname(String urealname) {
		this.urealname = urealname;
	}
	public String getUsex() {
		return usex;
	}
	public void setUsex(String usex) {
		this.usex = usex;
	}
	public int getUdeleteStatic() {
		return udeleteStatic;
	}
	public void setUdeleteStatic(int udeleteStatic) {
		this.udeleteStatic = udeleteStatic;
	}
	
	public String getUserMail() {
		return userMail;
	}
	public void setUserMail(String userMail) {
		this.userMail = userMail;
	}
	@Override
	public String toString() {
		return "UserDTO [uid=" + uid + ", uname=" + uname + ", upassword="
				+ upassword + ", upower=" + upower + ", udate=" + udate
				+ ", uaddr=" + uaddr + ", utel=" + utel + ", urealname="
				+ urealname + ", usex=" + usex + ", udeleteStatic="
				+ udeleteStatic + ", userMail=" + userMail + "]";
	}
}

2.创建dao层：UserDAO.java

package com.itheima.web.dao;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;

import com.itheima.web.dto.UserDTO;
import com.itheima.web.util.DataAccess;

public class UserDAO {
	
	Connection conn = null;    //全局变量，try内局部变量不能用于finally
	java.sql.Statement stat = null; 
	java.sql.Statement stat1 = null; 
	java.sql.PreparedStatement prep = null; 
	ResultSet rs = null;
	
	//查询所有
	public Vector<UserDTO> findAllUserInfo(){
		
		Vector<UserDTO> v = new Vector<UserDTO>();
		try{
			conn=DataAccess.getConnection();
		    stat = conn.createStatement();	//3.创建sql语句对象并执行
			String sql="select * from users where user_delete_static=1";	//4.查询
			rs = stat.executeQuery(sql);
			
				while(rs.next())
				{
					UserDTO s = new UserDTO();
					s.setUid(rs.getString("user_id"));
					s.setUname(rs.getString("user_nickname"));
					s.setUpassword(rs.getString("user_password"));
					s.setUpower(rs.getInt("user_power"));
					s.setUdate(rs.getString("user_date"));
					s.setUaddr(rs.getString("user_addr"));
					s.setUtel(rs.getString("user_Tel"));
					s.setUsex(rs.getString("user_sex"));
					s.setUrealname(rs.getString("user_realname"));
					s.setUdeleteStatic(rs.getInt("user_delete_static"));
					s.setUserMail(rs.getString("user_Mail"));
					v.add(s);
				}
			} 
		catch (SQLException e)
		{
			e.printStackTrace();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return v;
	}

	//关闭资源
		public void Final()
		{
					try{
							if(stat!=null)
							{
								stat.close();
								stat=null;
							}
							if(conn!=null)
							{
								conn.close();
								conn=null;
							}
							if(rs!=null)
							{
								rs.close();
								rs=null;
							}
							if(prep!=null)
								{
									prep.close();
									prep=null;
								}
						}
					catch (SQLException e) {
						System.out.println("关闭连接，语句及结果集时出现错误！");
						e.printStackTrace();
						}
		}
}

3.controller层：UserAction.java

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;

import com.itheima.web.dao.UserDAO;
import com.itheima.web.dto.UserDTO;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport{
	
	//查询
	private Vector<UserDTO> vuser;
	public Vector<UserDTO> getVuser() {
		return vuser;
	}
	public void setVuser(Vector<UserDTO> vuser) {
		this.vuser = vuser;
	}
	public String select() throws Exception{
		UserDAO userdao = new UserDAO();
		vuser = userdao.findAllUserInfo();
		return "success";
	}
}

配置文件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">  <!-- dtd说明了才能用struts标签 -->
	<struts>
		<constant name="struts.action.extension" value="do" ></constant>
		<constant name="struts.configuration.xml.reload" value="true"></constant>   
		<constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>
		<package name="	p1" extends="struts-default"> 
			<action name="allUser" class="com.itheima.web.action.UserAction" method="select"> 
					<result name="success">/allUser.jsp</result>
			</action>
        </package>
	</struts>

4.前端页面：allUser.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%> <!-- 声明struts标签库才能用 -->
<%
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>allUser</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">
 
</head>
<body>
<center><h3>用户列表信息</h3></center>
	<table width="100%" border="1px">
	<tr>
				<td>用户账号</td>
				<td>用户名</td>
				<td>密码</td>
				<td>权限(1.管理员 2普通用户)</td>
				<td>注册日期</td>
				<td>收货地址</td>
				<td>收货电话</td>
				<td>真实姓名</td>
				<td>性别</td>
				<td>邮箱</td>
				<td></td>
				<td></td>
			</tr>
		<s:iterator value="%{vuser}" id="vuser" >
			<tr>
				<td><s:property value="#vuser.uid"/></td>
				<td><s:property value="#vuser.uname"/></td>
				<td><s:property value="#vuser.upassword"/></td>
				<td><s:property value="#vuser.upower"/></td>
				<td><s:property value="#vuser.udate"/></td>
				<td><s:property value="#vuser.uaddr"/></td>
				<td><s:property value="#vuser.utel"/></td>
				<td><s:property value="#vuser.urealname"/></td>
				<td><s:property value="#vuser.usex"/></td>
				<%-- <td><s:property value="#vuser.udeleteStatic"/></td> --%>
				<td><s:property value="#vuser.userMail"/></td>
				<td><s:a href="toupdate.do?uid=%{#vuser.uid}">修改</s:a></td> 
				<td><s:a href="delete.do?uid=%{#vuser.uid}">删除</s:a></td>  
			</tr>
		</s:iterator>
	</table>
</body>
</html>

工程文件夹：

访问网址：hwork是工程名字，allUser是struts.xml里面action的名字，.do是struts.xml里面声明的后缀名。