页面如下：
核心源码如下：
suggest.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>My JSP 'suggest.jsp' starting page</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">
-->
<script type="text/javascript"
src="${ pageContext.request.contextPath}/js/jquery-1.9.1.js">
</script>
<script type="text/javascript"
src="${ pageContext.request.contextPath}/js/suggest.js">
</script>
<style type="text/css">
.s_ipt {
width: 405px;
height: 30px;
font: 16px/ 22px arial;
margin: 5px 0 0 7px;
background: #fff;
outline: 0;
-webkit-appearance: none;
}
.s_wds {
width: 405px;
height: 200px;
font: 16px/ 22px arial;
background: #fff;
display: none;
}
</style>
</head>
<body>
<div align="center">
<h2>jQuery中googlesuggest的实现</h2><hr/>
<div>
<input type="text" id="keyword" class="s_ipt" />
<input type="button" value="百度一下" />
</div>
<div>
<select id="words" multiple="multiple" size="10" class="s_wds"></select>
</div>
</div>
</body>
</html>
suggest.js
$(document).ready(function() {
// 给input输入框注册 keyup事件
$("#keyword").bind("keyup", function() {
$("#words").show();
// 获取收入的值
var keyVal = $(this).val();
if ("" == keyVal) {
// 清空
$("#words").empty().hide();// 对象链式操作
return;
}
// 发送ajax请求
$.post("./csdn/UserAction_keyVals.action?time=" + new Date().getTime(),
{
keyword : keyVal
}, function(data) {
// 清空
$("#words").empty();
// 获取所有的相关的数据
var jsonusers = data.users;
// 遍历数组
for (var i = 0; i < jsonusers.length; i++) {
// 得到具体的user对象
var jsonuser = jsonusers[i];
// 创建option
var $optu = $("<option></option>");
// 设置文本
$optu.text(jsonuser.name);
// 把创建的option添加到select中
$("#words").append($optu).show();
}
}, "json");
});
$("#words").bind("dblclick", function() {
$("#keyword").val($(this).val());
$("#words").empty().hide();
});
$("#words").bind("keyup", function(event) {
var key = event.which;
if (key == 13) {
$("#keyword").val($(this).val());
$("#words").empty().hide();
}
});
});
User.java
package www.csdn.project.domain;
public class User {
private String name;
private Integer id;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public User(String name, Integer id) {
super();
this.name = name;
this.id = id;
}
public User() {
super();
// TODO Auto-generated constructor stub
}
}
User.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="www.csdn.project.domain">
<class name="User" catalog="csdn" table="user">
<id column="id" name="id" type="java.lang.Integer">
<generator class="native"></generator>
</id>
<property name="name" column="name" type="java.lang.String" length="60" unique="true" not-null="true"/>
</class>
</hibernate-mapping>
UserDAO.java接口
package www.csdn.project.dao;
import java.util.List;
import www.csdn.project.domain.User;
public interface UserDAO extends BaseDAO<User, Integer>{
/**
* 验证用户名是否存在
*
* @param name
* @param className
* @return
*/
public boolean checkName(String name, Class className);
/**
* 根据关键字查询用户信息
* @param keyword
* @param className
* @return
*/
public List<User> findByKeyVal(String keyword, Class className);
}
UserDaoImpl.java
package www.csdn.project.dao;
import java.util.List;
import org.hibernate.criterion.Restrictions;
import www.csdn.project.domain.User;
import www.csdn.project.util.BaseHibernateDAO;
import www.csdn.project.util.HiberSessionFactory;
public class UserDAOImpl extends BaseHibernateDAO implements UserDAO{
@SuppressWarnings("unchecked")
public boolean checkName(String name, Class className) {
boolean flag=false;
try{
@SuppressWarnings("unused")
User user=(User) getSession().createCriteria(className).add(Restrictions.eq("name",name)).uniqueResult();
if(user!=null){
flag = true;
}
}catch(Exception e){
e.printStackTrace();
}finally{
HiberSessionFactory.closeSession();
}
return flag;
}
@SuppressWarnings("unchecked")
public List<User> findByKeyVal(String keyword, Class className) {
List<User> users=null;
try{
users=getSession().createCriteria(className).add(Restrictions.like("name", keyword+"%")).list();
}catch(Exception e){
e.printStackTrace();
}finally{
HiberSessionFactory.closeSession();
}
return users;
}
public void deleteObject(User entity) {
// TODO Auto-generated method stub
}
public void deleteObjectById(Integer id) {
// TODO Auto-generated method stub
}
public List<User> getAllObjects(Class<User> entityClass) {
// TODO Auto-generated method stub
return null;
}
public User getObjectById(Class<User> entityClass, Integer id) {
// TODO Auto-generated method stub
return null;
}
public User loadObjectById(Class<User> entityClass, Integer id) {
// TODO Auto-generated method stub
return null;
}
public void saveObject(User entity) {
// TODO Auto-generated method stub
}
public void updateObject(User entity) {
// TODO Auto-generated method stub
}
}
UserAction.java
package www.csdn.project.action;
import java.util.List;
import www.csdn.project.domain.User;
import www.csdn.project.service.UserService;
import www.csdn.project.service.UserServiceImpl;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
// 业务对象
private UserService userService = new UserServiceImpl();
// 用户名称
private String name;
// 判断用户名称后返回的信息
private String msg;
// 关键字
private String keyword;
private List<User> users;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public String getKeyword() {
return keyword;
}
public void setKeyword(String keyword) {
this.keyword = keyword;
}
public List<User> getUsers() {
return users;
}
public void setUsers(List<User> users) {
this.users = users;
}
public String checkName() {
// 业务查询操作
boolean flag = userService.checkName(name, User.class);
if (flag) {
msg = "用户名已经存在";
} else {
msg = "用户名可以使用";
}
return "checkName";
}
// 通过关键字查询的方法
public String keyVals() {
users = userService.findByKeyVal(keyword, User.class);
return "keyVals";
}
}
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>
<!--<include file="www/csdn/project/resource/struts-constant.xml" />
--><include file="strutsppc.xml"></include>
<package name="tests" namespace="/csdn" extends="json-default">
<action name="UserAction_*" class="www.csdn.project.action.UserAction"
method="{1}">
<result name="checkName" type="json">
<param name="root">msg</param>
</result>
<result name="keyVals" type="json">
<param name="includeProperties">users\[\d+\]\.name</param>
</result>
<result name="input">/index.jsp</result>
</action>
</package>
</struts>
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="myeclipse.connection.profile">localhost</property> <property name="connection.url"> jdbc:mysql://localhost:3306/csdn </property> <property name="connection.username">root</property> <property name="connection.password">root</property> <property name="connection.driver_class"> com.mysql.jdbc.Driver </property> <property name="dialect"> org.hibernate.dialect.MySQLDialect </property> <property name="show_sql">true</property> <mapping resource="www/csdn/project/domain/City.hbm.xml" /> <mapping resource="www/csdn/project/domain/Country.hbm.xml" /> <mapping resource="www/csdn/project/domain/Province.hbm.xml" /> <mapping resource="www/csdn/project/domain/User.hbm.xml" /> </session-factory> </hibernate-configuration>
作者：sgx425021234 发表于2013-3-22 23:42:30 原文链接
阅读：112 评论：0 查看评论