SpringMVC+easyUI 分页,查询 (完整的CRUD)

终于完成CRUD的功能了,注意,这里会对前面有一些改动,UserController的listUser() 已经改写了,现在把全部整理一下吧。

JSP:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    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" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<base href="<%=basePath%>">
	<meta name="description" content="easyui help you build your web page easily!">
	<title>jQuery EasyUI CRUD Demo</title>
		<link rel="stylesheet" type="text/css" href="css/easyui/themes/default/easyui.css">
	<link rel="stylesheet" type="text/css" href="css/easyui/themes/icon.css">
	<link rel="stylesheet" type="text/css" href="css/easyui/demo.css">
	<script type="text/javascript" src="js/jquery-easyui-1.4.2/jquery.min.js"></script>
	<script type="text/javascript" src="js/jquery-easyui-1.4.2/jquery.easyui.min.js"></script>
	<style type="text/css">
		#fm{
			margin:0;
			padding:10px 30px;
		}
		.ftitle{
			font-size:14px;
			font-weight:bold;
			color:#666;
			padding:5px 0;
			margin-bottom:10px;
			border-bottom:1px solid #ccc;
		}
		.fitem{
			margin-bottom:5px;
		}
		.fitem label{
			display:inline-block;
			width:80px;
		}
	</style>
	<script type="text/javascript">
		var url;
		function newUser(){
			$('#dlg').dialog('open').dialog('setTitle','新建用户');
			$('#fm').form('clear');
			url = 'user/addUser';
		}
		function editUser(){
			var row = $('#dg').datagrid('getSelected');
			// alert(row.userId);
		
			if (row){
				$('#dlg').dialog('open').dialog('setTitle','编辑用户');
				$('#fm').form('load',row);
				//url = 'user/updateUser?id='+row.userId;
				url ='user/updateUser';
			}
		}
		function saveUser(){
			$('#fm').form('submit',{
				//url:'user/addUser',
				url: url,
				onSubmit: function(){
					return $(this).form('validate');
				},
				success: function(result){
					var result = eval('('+result+')');
					if (result.success){
						$.messager.show({
						title:'Info',
						msg:result.msg,
						showType:'fade',
						style:{
							right:'',
							bottom:''
							}
						});
						$('#dlg').dialog('close');		// close the dialog
						$('#dg').datagrid('reload');	// reload the user data
					} else {
						$.messager.show({
							title: 'Error',
							msg: result.msg
						});
					}
				}
			});
		}
		function removeUser(){
			var row = $('#dg').datagrid('getSelected');
			 //alert(row.id);
			if (row){
				$.messager.confirm('Confirm','你确定要删除用户吗?',function(r){
					if (r){
						$.post('user/removeUser',{id:row.userId},function(result){
							if (result.success){
								$.messager.show({
						title:'Info',
						msg:result.msg,
						showType:'fade',
						style:{
							right:'',
							bottom:''
							}
						});
								$('#dg').datagrid('reload');	// reload the user data
							} else {
								$.messager.show({	// show error message
									title: 'Error',
									msg: result.msg
								});
							}
						},'json');
					}
				});
			}
		}
		function doSearch(){
			$('#dg').datagrid('load',{
			queryUserId: $('#userId').val()
		});
}
		
	</script>
</head>
<body>
	<h2>Basic CRUD Application</h2>
	<div class="demo-info" style="margin-bottom:10px">
		<div class="demo-tip icon-tip"> </div>
		<div>Click the buttons on datagrid toolbar to do crud actions.</div>
	</div>
	
	<table id="dg" title="My Users" class="easyui-datagrid" style="width:700px;height:250px"
			url="user/listUsers"
			toolbar="#toolbar" pagination="true"
			rownumbers="true" fitColumns="true" singleSelect="true">
		<thead>
			<tr>
				<th field="userId" width="50">UserId</th>
				<th field="userName" width="50">UserName</th>
				<th field=passWord width="50">PassWord</th>
				<th field="enable" width="50">Enable</th>
			</tr>
		</thead>
	</table>
	<div id="toolbar">
		<a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="newUser()">New User</a>
		<a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-edit" plain="true" onclick="editUser()">Edit User</a>
		<a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-remove" plain="true" onclick="removeUser()">Remove User</a>
		<div>
			<span>User ID:</span>
			<input id="userId" style="line-height:26px;border:1px solid #ccc">
			<a href="javascript:void(0);" class="easyui-linkbutton" plain="true" onclick="doSearch()">Search</a>
		</div>
	</div>
	
	<div id="dlg" class="easyui-dialog" style="width:400px;height:280px;padding:10px 20px"
			closed="true" buttons="#dlg-buttons">
		<div class="ftitle">User Information</div>
		<form id="fm" method="post" novalidate>
			<div class="fitem">
				<label>UserId:</label>
				<input name="userId" class="easyui-validatebox" required="true">
			</div>
			<div class="fitem">
				<label>UserName:</label>
				<input name="userName" class="easyui-validatebox" required="true">
			</div>
			<div class="fitem">
				<label>PassWord:</label>
				<input name="passWord">
			</div>
			<div class="fitem">
				<label>Enable:</label>
				<input name="enable" class="easyui-validatebox" >
			</div>
		</form>
	</div>
	<div id="dlg-buttons">
		<a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-ok" onclick="saveUser()">Save</a>
		<a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-cancel" onclick="javascript:$('#dlg').dialog('close')">Cancel</a>
	</div>
</body>
</html>
Controller:

package com.yang.bishe.controller;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.yang.bishe.entity.Grid;
import com.yang.bishe.entity.Json;
import com.yang.bishe.entity.User;
import com.yang.bishe.service.interfaces.IUserService;

@Controller
@RequestMapping("/user")
public class UserController extends BaseController {
	@Autowired
	private IUserService userService;
	@RequestMapping("/list")
	   public ModelAndView goList(){
		  return new ModelAndView("user/list");
	    }
	@RequestMapping("/listUsers")
	  public String listUser(HttpServletRequest request,
				HttpServletResponse response) throws Exception {
		page=ServletRequestUtils.getIntParameter(request, "page", 1);//默认值为1
		rows=ServletRequestUtils.getIntParameter(request, "rows", 0);
		String queryUserId=request.getParameter("queryUserId");//获取要查询的用户账号
		Grid grid = new Grid();
		String hql;
		List<User>users;
		if(queryUserId!=null)
		{
			hql="from User as user where user.UserId like  '%"+queryUserId+"%'";
		}else{
			hql="from User";
		}
		users=(List<User>)userService.find(hql, page, rows);
		grid.setTotal(userService.count("select count(*) from User"));
		grid.setRows(users);
		writeJson(grid,response);
		return null;
	    }
	
	@RequestMapping("/addUser")
	 public String addUser(User user,HttpServletRequest request,
				HttpServletResponse response) throws Exception{
		Json json = new Json();//用于向前端发送消息
		if(userService.getById(user.getUserId())!=null){
			json.setMsg("新建用户失败,用户已存在!");
		}else{
			userService.save(user);
			json.setMsg("新建用户成功!");
			json.setSuccess(true);
		}
		writeJson(json,response);
		return null;
		}
	@RequestMapping("/removeUser")
	 public String removeUser(HttpServletRequest request,HttpServletResponse response) throws Exception{
		Json json = new Json();//用于向前端发送消息
		String userId=request.getParameter("id");
		try{
			userService.delete((User)userService.getById(userId));//不懂为啥要加上(User)才对。。
			json.setMsg("删除成功!");
			json.setSuccess(true);
			writeJson(json,response);
			return null;
		}catch (Exception e){
			json.setMsg("删除失败!"+e.getMessage());
			writeJson(json,response);
			return null;
		}
	
		}
	@RequestMapping("/updateUser")
	 public String updateUser(User user,HttpServletResponse response) throws Exception{
		Json json = new Json();//用于向前端发送消息
		try{
				userService.update(user);
				json.setMsg("更新成功!");
				json.setSuccess(true);
				writeJson(json,response);
				return null;
		}catch(Exception e){
			json.setMsg("更新失败!"+e.getMessage());
			writeJson(json,response);
			return null;
		}
		
	}
}

其实listUser里面一逻辑可以放到service上的,还没弄。。。

service层没什么,是继承一个baseService

package com.yang.bishe.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.yang.bishe.dao.IBaseDao;
import com.yang.bishe.entity.User;
import com.yang.bishe.service.base.BaseServiceImpl;
import com.yang.bishe.service.interfaces.IUserService;
@Service
public class UserServiceImpl extends BaseServiceImpl<User> implements IUserService {
	@Autowired
	private IBaseDao<User> userDao;
}

userDao都是继承BaseDao的:我就贴一些用到的函数吧(接口啥的就不贴出来了):

package com.yang.bishe.dao;

import java.io.Serializable;
import java.math.BigInteger;
import java.util.List;
import java.util.Map;

import org.hibernate.Query;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.transform.Transformers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

@Repository
public class BaseDaoImpl<T>implements IBaseDao<T> {

	@Autowired
	private SessionFactory sessionFactory;

	/**
	 * 获得当前事物的session
	 * 
	 * @return org.hibernate.Session
	 */
	public Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	@Override
	public Serializable save(T o) {
		if (o != null) {
			return getCurrentSession().save(o);
		}
		return null;
	}

	@SuppressWarnings("unchecked")
	@Override
	public T getById(Class<T> c, Serializable id) {
		return (T) getCurrentSession().get(c, id);
	}

	@Override
	public T getByHql(String hql) {
		Query q = getCurrentSession().createQuery(hql);
		List<T> l = q.list();
		if (l != null && l.size() > 0) {
			return l.get(0);
		}
		return null;
	}


	@Override
	public void delete(T o) {
		if (o != null) {
			getCurrentSession().delete(o);
		}
	}

	@Override
	public void update(T o) {
		if (o != null) {
			getCurrentSession().update(o);
		}
	}

	@Override
	public List<T> find(String hql) {
		Query q = getCurrentSession().createQuery(hql);
		return q.list();
	}


	@Override
	public List<T> find(String hql, int page, int rows) {
		Query q = getCurrentSession().createQuery(hql);
		return q.setFirstResult((page - 1) * rows).setMaxResults(rows).list();
	}

	@Override
	public Long count(String hql) {
//		Query q = getCurrentSession().createQuery(hql).;
//		return (Long) q.uniqueResult();
		return  (Long)getCurrentSession().createQuery(hql).list().get(0);
	}


	@Override
	public int executeHql(String hql) {
		Query q = getCurrentSession().createQuery(hql);
		return q.executeUpdate();
	}


	@SuppressWarnings("unchecked")
	@Override
	public List<Map> findBySql(String sql) {
		SQLQuery q = getCurrentSession().createSQLQuery(sql);
		return q.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP).list();
	}

	@Override
	public List<Map> findBySql(String sql, int page, int rows) {
		SQLQuery q = getCurrentSession().createSQLQuery(sql);
		return q.setFirstResult((page - 1) * rows).setMaxResults(rows).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP).list();
	}


	@Override
	public int executeSql(String sql) {
		SQLQuery q = getCurrentSession().createSQLQuery(sql);
		return q.executeUpdate();
	}

	@Override
	public BigInteger countBySql(String sql) {
		SQLQuery q = getCurrentSession().createSQLQuery(sql);
		return (BigInteger) q.uniqueResult();
	}

}

效果图:

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第二页:

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根据userId查找,这里是模糊查询:

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编辑用户(弹出的对话框会获取选中的数据):
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修改后:

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