2019-9-29 seo達人
User表：
User類：
package pers.zhang.domain;
public class User {
private Long user_id;
private String user_code;
private String user_name;
private String user_password;
private String user_state;
public Long getUser_id() {
return user_id;
}
public void setUser_id(Long user_id) {
this.user_id = user_id;
}
public String getUser_code() {
return user_code;
}
public void setUser_code(String user_code) {
this.user_code = user_code;
}
public String getUser_name() {
return user_name;
}
public void setUser_name(String user_name) {
this.user_name = user_name;
}
public String getUser_password() {
return user_password;
}
public void setUser_password(String user_password) {
this.user_password = user_password;
}
public String getUser_state() {
return user_state;
}
public void setUser_state(String user_state) {
this.user_state = user_state;
}
}
ORM元數(shù)據(jù)：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
";
<hibernate-mapping package="pers.zhang.domain" >
<class name="User" table="sys_user" >
<id name="user_id" >
<generator class="identity"></generator>
</id>
<property name="user_code" column="user_code" ></property>
<property name="user_name" column="user_name" ></property>
<property name="user_password" column="user_password" ></property>
<property name="user_state" column="user_state" ></property>
</class>
</hibernate-mapping>
控制層：
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//獲得查詢參數(shù)
String userIdStr = request.getParameter("userId");
String userName = request.getParameter("userName");
//獲得離線查詢對象
DetachedCriteria detachedCriteria = DetachedCriteria.forClass(User.class);
//拼裝查詢條件
if(userIdStr != null && !"".equals(userIdStr)) {
Long userId = (long) Integer.parseInt(userIdStr);
detachedCriteria.add(Restrictions.eq("user_id", userId));
}
if(userName != null && !"".equals(userName)) {
detachedCriteria.add(Restrictions.like("user_name", userName, MatchMode.ANYWHERE));
}
//作為參數(shù)傳遞給service層
UserService userService = new UserService();
List<User> list = userService.findUserByCondition(detachedCriteria);
request.setAttribute("userList", list);
request.getRequestDispatcher("list2.jsp").forward(request, response);
}
Service層：
public List<User> findUserByCondition(DetachedCriteria detachedCriteria) {
//傳遞給Dao層
UserDao userDao = new UserDao();
return userDao.findUserByCondition(detachedCriteria);
}
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Dao層：
public List<User> findUserByCondition(DetachedCriteria detachedCriteria) {
Session session = HibernateUtils.openSession();
Transaction tx = session.beginTransaction();
//關聯(lián)session
Criteria criteria = detachedCriteria.getExecutableCriteria(session);
//查詢
List<User> list = criteria.list();
return list;
}
前端頁面：
忘記寫查詢數(shù)據(jù)回顯了…
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="js/jquery-2.1.0.js" ></script>
<script type="text/javascript" src="js/bootstrap.min.js" ></script>
<link rel="stylesheet" href="css/bootstrap.css" />
</head>
<body>
<form class="form-inline" role="form" method="post" action="${pageContext.request.contextPath }/findUserByCondition">
<div class="form-group">
<input type="text" class="form-control" id="exampleInputEmail2" placeholder="用戶ID" name="userId">
</div>
<div class="form-group">
<input type="text" class="form-control" id="exampleInputPassword2" placeholder="用戶名" name="userName">
</div>
<button type="submit" class="btn btn-default">篩選</button>
</form>
<div style="text-align: center; width: 600px;">
<table class="table table-hover">
<tr><td>編號</td><td>用戶ID</td><td>用戶名</td><td>昵稱</td><td>密碼</td></tr>
<!-- 顯示數(shù)據(jù) -->
<c:forEach items="${userList }" var="list">
<tr><td>${list.user_id }</td><td>${list.user_code }</td><td>${list.user_name }</td><td>${list.user_password }</td><td>${list.user_state }</td></tr>
</c:forEach>
</table>
</div>
</body>
</html>
測試：
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