Nutz+jQuery esayUI Datagrid实现增删改查以及分页效果

本实例通过国内比较流行的MVC框架-Nutz，前台使用jquery EasyUI，其中表格使用的Datagrid实现数据员工管理，其中涉及增加、删除、修改、分页效果。

本实例在开发中涉及的的问题有：

1、如何共用添加、修改页面，并方便数据填充到表单。

2、jquery EasyUI的datagrid组件中、分页组件默认是10条，其中我最初设置想显示15条，但是遇到一个情况，页面加载时，依然是10条，只有通过点击分页组件的刷新

按钮或点击分页按钮才显示15条，最后通过研究，详见Pager.js源码。

3、由于员工表中职务是引用职务表的id，因此在datagrid数据展示，如何显示职务成为一个问题。最后通过查看Nutz API，使用了一对一映射。代码详见EmployeeModel.java注解，以及EmployeeServiceImpl.java init方法，使用了fetchLinks方法解决，然后在遍及数据时，封装每一个元素的viewDuty属性，以便于datagrid数据加载绑定。

4、由于使用了iframe,开发中发现第一次打开添加/编辑页面时，界面元素样式有很大问题，只要一刷新iframe中的页面，就不会有问题了。最后通过使用jquery类库高版本，方才解决问题。我使用的是1.9版本,最后不要超过2.0(该版本不兼容IE6、7浏览器)。

效果图：

数据库设计：

职务表：

员工表：

程序结构图：

源码在线：

EmployeeModel.java

package org.chris.model;

import java.util.Date;

import org.nutz.dao.entity.annotation.Column;
import org.nutz.dao.entity.annotation.Id;
import org.nutz.dao.entity.annotation.One;
import org.nutz.dao.entity.annotation.Table;

@Table("employee")
public class EmployeeModel {
	@Id
	@Column
	private int id;
	@Column
	private String name;
	@Column("duty_id")
	private int dutyId;
	@Column
	private String gender;
	@Column
	private Date birthday;
	@Column
	private Date firedate;
	@Column
	private Date hiredate;
	@Column
	private String idcard;
	@Column
	private String address;
	@Column
	private String phone;
	@Column
	private String email;
	@Column("create_by")
	private int createBy;
	@Column("create_date")
	private Date createDate;
	@One(target=DutyModel.class,field="dutyId")
	private DutyModel duty;
	
	private String viewDuty;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getDutyId() {
		return dutyId;
	}
	public void setDutyId(int dutyId) {
		this.dutyId = dutyId;
	}
	public String getGender() {
		return gender;
	}
	public void setGender(String gender) {
		this.gender = gender;
	}
	public Date getBirthday() {
		return birthday;
	}
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	public Date getFiredate() {
		return firedate;
	}
	public void setFiredate(Date firedate) {
		this.firedate = firedate;
	}
	public Date getHiredate() {
		return hiredate;
	}
	public void setHiredate(Date hiredate) {
		this.hiredate = hiredate;
	}
	public String getIdcard() {
		return idcard;
	}
	public void setIdcard(String idcard) {
		this.idcard = idcard;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public int getCreateBy() {
		return createBy;
	}
	public void setCreateBy(int createBy) {
		this.createBy = createBy;
	}
	public Date getCreateDate() {
		return createDate;
	}
	public void setCreateDate(Date createDate) {
		this.createDate = createDate;
	}
	public DutyModel getDuty() {
		return duty;
	}
	public void setDuty(DutyModel duty) {
		this.duty = duty;
	}
	public String getViewDuty() {
		return viewDuty;
	}
	public void setViewDuty(String viewDuty) {
		this.viewDuty = viewDuty;
	}
}

EmployeeService接口：

package org.chris.service;

import java.util.Map;

import org.chris.model.EmployeeModel;

public interface EmployeeService {
	/**
	 * 添加
	 * @author Chris Suk
	 * @date 2014-4-24 下午08:41:51
	 * @param model
	 */
	public Map<String, Object> save(EmployeeModel model);
	/**
	 * 删除
	 * @author Chris Suk
	 * @date 2014-4-24 下午08:41:51
	 * @param ids
	 */
	public Map<String, Object> delete(String...ids);
	/**
	 * 加载
	 * @author Chris Suk
	 * @date 2014-4-24 下午08:43:10
	 * @return
	 */
	public Map<String, Object> init(int rows,int page);
}

EmployeeServiceImpl.java实现类

package org.chris.service.impl;

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

import org.chris.model.DutyModel;
import org.chris.model.EmployeeModel;
import org.chris.service.EmployeeService;
import org.nutz.dao.Cnd;
import org.nutz.dao.pager.Pager;
import org.nutz.ioc.loader.annotation.IocBean;
import org.nutz.service.IdEntityService;
@IocBean(name="employeeService",fields={"dao"})
public class EmployeeServiceImpl extends IdEntityService<EmployeeModel> implements EmployeeService {

	public Map<String, Object> save(EmployeeModel model) {
		Map<String, Object> result = new HashMap<String, Object>();
		try {
			EmployeeModel query = this.dao().fetch(EmployeeModel.class, model.getId());
			if(null!=query){
				this.dao().update(model);
			}else{
				this.dao().insert(model);
			}
			result.put("type", "0");
			result.put("message", "保存成功");
		} catch (RuntimeException e) {
			result.put("type", "1");
			result.put("message", e.getMessage());
			e.printStackTrace();
		}
		return result;
	}

	public Map<String, Object> delete(String... ids) {
		Map<String, Object> result = new HashMap<String, Object>();
		try {
			this.dao().clear(EmployeeModel.class, Cnd.where("id", "in", ids));
			result.put("type", "0");
			result.put("message", "删除成功");
		} catch (RuntimeException e) {
			result.put("type", "1");
			result.put("message", e.getMessage());
			e.printStackTrace();
		}
		return result;
	}
	/**
	 * 分页查询
	 * @author Chris Suk
	 * @date 2014-5-11 下午08:58:45
	 * @param rows
	 * @param page
	 * @return
	 */
	public Map<String, Object> init(int rows,int page) {
		Map<String, Object> result = new HashMap<String, Object>();
		Pager pager = new Pager();
		pager.setPageNumber(page);
		pager.setPageSize(rows);
		List<EmployeeModel> list = this.dao().query(EmployeeModel.class, null,pager);
		for(EmployeeModel model : list){
			this.dao().fetchLinks(model, "duty");
			DutyModel duty = model.getDuty();
			if(null!=duty){
				model.setViewDuty(duty.getName());
			}
		}
		result.put("total", this.dao().query(EmployeeModel.class, null).size());
		result.put("rows", list);
		return result;
	}


}

EmployeeModule.java（该累充当角色类似与struts2框架的Action）

package org.chris.module;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.chris.model.EmployeeModel;
import org.chris.service.impl.EmployeeServiceImpl;
import org.nutz.ioc.loader.annotation.Inject;
import org.nutz.ioc.loader.annotation.IocBean;
import org.nutz.mvc.annotation.At;
import org.nutz.mvc.annotation.Ok;
import org.nutz.mvc.annotation.Param;

@IocBean
public class EmployeeModule {
	@Inject
	private EmployeeServiceImpl employeeService;
	@At("/employee/save")
	@Ok("json")
	// 返回形式是jsp
	public Map<String, Object> save(@Param("::model.") EmployeeModel model) {
		return this.employeeService.save(model);
	}
	@At("/employee/delete")
	@Ok("json")
	// 返回形式是jsp
	public Map<String, Object> delete(HttpServletRequest request) {
		String[] ids = request.getParameter("ids").split(",");
		return this.employeeService.delete(ids);
	}
	/**
	 * 加载
	 * @author Chris Suk
	 * @date 2014-4-22 下午10:13:57
	 * @param request
	 */
	@At("/employee/init")
	@Ok("json")
	// 返回形式是jsp
	public Map<String, Object> init(HttpServletRequest request,int rows,int page) {
		Map<String, Object> map = this.employeeService.init(rows,page);
		return map;
	}
	/**
	 * 编辑
	 * @author Chris Suk
	 * @date 2014-4-22 下午10:13:57
	 * @param request
	 */
	@At("/employee/edit")
	@Ok("jsp:/module/system/sys_employee_edit.jsp")
	// 返回形式是jsp
	public void edit(HttpServletRequest request,int id) {
		EmployeeModel model=this.employeeService.fetch(id);
		request.setAttribute("model", model);
	}
}

sys_employee_manager.jsp 员工管理页面

<%@ page language="java" pageEncoding="UTF-8"%>
<%@ include file="../../inc/include.jsp" %>
<c:set var="title" value="员工管理"/>
<html>
  <head>
  	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  	<title>${title}</title>
    <jsp:include page="../../inc/Common.jsp"/>
	<script type="text/javascript" src="${thisPath}/js/Common.js?v=${version}"></script>
	<script type="text/javascript" src="${thisPath}/module/js/Pager.js?v=${version}"></script>
	<script>
		Pager.actionPrefix='${thisPath}/employee/';
		Pager.init();
	</script>
</head>
<body>
	<table title="${title}"id="list" width="100%" height="auto" data-options="iconCls:'icon-edit',rownumbers: true,singleSelect:true,idField:'id',fitColumns:true,onClickRow: Pager.onClickRow">
		<thead>
			<tr>
				<th data-options="field:'name',width:100,editor:'text'">姓名</th>
				<th data-options="field:'viewDuty',width:100,editor:'text'">职务</th>
				<th data-options="field:'gender',width:100,editor:'text',formatter:function(value,row,index){return value=='1'?'男':'女'}">性别</th>
				<th data-options="field:'firedate',width:100,editor:'text',formatter:function(value,row,index){return value?value.substring(0,10):'';}">入职日期</th>
				<th data-options="field:'address',width:100,editor:'text'">住址</th>
				<th data-options="field:'email',width:100,editor:'text'">邮箱</th>
				<th data-options="field:'phone',width:100,editor:'text'">电话</th>
			</tr>
		</thead>
	</table>
	<!-- 添加\编辑窗口 使用iframe方式，很方便的。自己创意，方便数据填充表单，利于代码维护。 -->
	<div id="editWindow" class="easyui-window" title="新建员工" data-options="iconCls:'icon-save',modal:true" style="width:400px;height:450px;padding:5px;">
        <div class="easyui-layout" data-options="fit:true">
            <iframe width="400" height="450" frameborder="0" src="" id="editIframe"></iframe>
        </div>
    </div>
</body>
</html>

sys_employee_edit.jsp 员工添加/编辑页面

说明：由于添加和修改想共用一个页面，当编辑时，根据选中行的id查询，填充到表单，所以我就使用了iframe来加载添加/修改页面。

<%@ page language="java" pageEncoding="UTF-8"%>
<%@ include file="../../inc/include.jsp" %>
<c:set var="title" value="员工管理"/>
<c:set var="model" value="${requestScope.model}"/>
<html>
  <head>
  	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  	<title>${title}</title>
    <jsp:include page="../../inc/Common.jsp"/>
	<script type="text/javascript" src="${thisPath}/js/Common.js?v=${version}"></script>
	<script type="text/javascript" src="${thisPath}/module/js/Pager.js?v=${version}"></script>
	<script>
		Pager.actionPrefix='${thisPath}/employee/';
	</script>
</head>
<body>
  <div class="editBox" data-options="region:'north'" style="padding:10px;">
	<form id="editForm" method="post">   
		<input type="hidden" name="model.id" value="${model.id}"/>   
        <ul>
		    <li>   
		        <span class="label" for="name">员工姓名:</span>   
		        <input class="easyui-validatebox" type="text" name="model.name" data-options="required:true" value="${model.name}"/>   
		    </li> 
		    <li>   
		        <span class="label" for="dutyId">职务:</span>   
		        <input class="easyui-combobox" type="text" name="model.dutyId" data-options="
		        required:true,
		        url:'${thisPath}/common/dutyList.do',
	                  valueField:'id',
	                  textField:'name',
	                  panelHeight:'auto'"  value="${model.dutyId}"/>   
		    </li>  
		    <li>   
		        <span class="label" for="gender">性别:</span>   
		        <select class="easyui-combobox" name="model.gender" style="width:152px;">
			        <option selected="selected" value="1">男</option>
			        <option value="2">女</option>
			    </select>
		    </li>
		    <li>   
		        <span class="label" for="birthday">出生日期:</span>   
		        <input class="easyui-datebox" type="text" name="model.birthday" value="${model.birthday}"/>   
		    </li> 
		    <li>   
		        <span class="label" for="firedate">入职日期:</span>   
		        <input class="easyui-datebox" type="text" name="model.firedate" value="${model.firedate}"/>   
		    </li>  
		    <li>   
		        <span class="label" for="idcard">身份证号:</span>   
		        <input class="easyui-validatebox" type="text" name="model.idcard" value="${model.idcard}"/>   
		    </li> 
		    <li>   
		        <span class="label" for="address">住址:</span>
		        <input class="easyui-validatebox" type="text" name="model.address" value="${model.address}" />   
		    </li>  
		    <li>   
		        <span class="label" for="phone">电话:</span>   
		        <input class="easyui-validatebox" type="text" name="model.phone" value="${model.phone}"/>   
		    </li>   
		    <li>   
		        <span class="label" for="email">邮箱:</span>   
		        <input class="easyui-validatebox" type="text" name="model.email" data-options="validType:'email'"  value="${model.email}"/>   
		    </li>
		    <li class="buttons">   
		       <a class="easyui-linkbutton" data-options="iconCls:'icon-ok'" href="javascript:void(0)" onclick="javascript:Pager.save();">确定</a> 
	             	   <a class="easyui-linkbutton" data-options="iconCls:'icon-cancel'" href="javascript:void(0)" onclick="javascript:alert('cancel')">关闭</a>
		    </li>   
		</ul>   	
	</form>  
  </div>
</body>
</html>

其中页面涉及引用的文件：

1、include.jsp

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page language="java"  pageEncoding="GBK"%>
<%@ taglib prefix="c"  uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt"  uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<c:set value="${pageContext.request.contextPath}" var="thisPath"/>
<c:set var="appTitle" value="信息发布管理平台"/>
<%String v = java.util.UUID.randomUUID().toString();%>
<c:set var="version" value="<%=v %>"/>

2、Common.jsp

<%@ taglib prefix="c"  uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt"  uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<c:set value="${pageContext.request.contextPath}" var="thisPath"/>
<%String v = java.util.UUID.randomUUID().toString();%>
<c:set var="version" value="<%=v %>"/>
<link rel="stylesheet" type="text/css" href="${thisPath}/plugins/jquery.easyui.1.3.6/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="${thisPath}/plugins/jquery.easyui.1.3.6/themes/icon.css">
<link rel="stylesheet" type="text/css" href="${thisPath}/css/Common.css?v=${version}">
<script type="text/javascript" src="${thisPath}/plugins/jquery.easyui.1.3.6/jquery.min.js"></script>
<script type="text/javascript" src="${thisPath}/plugins/jquery.easyui.1.3.6/jquery.easyui.min.js"></script>
<script type="text/javascript" src="${thisPath}/plugins/jquery.easyui.1.3.6/easyui-lang-zh_CN.js"></script>

3、Page.js

var editIndex = undefined;
/**
 * 本基类为基础数据模块提供公共服务业务处理
 * @author Chris Suk
 * @date 2014/4/26
 * @type 
 */
var Pager={
	/**
	 * action前缀
	 * @type String
	 */
	actionPrefix:'',
	title:'',
	/**
	 * 初始化配置
	 */
	init:function(){
		$(function(){
			$('#editWindow').window('close');
			$('#list').datagrid({
			url:Pager.actionPrefix+'init.do',
			pageNumber: 1,
			toolbar:[{
				text:'新增',
				iconCls: 'icon-add',
				handler: function(){Pager.append();}
			},'-',{
				text:'删除',
				iconCls: 'icon-remove',
				handler: function(){Pager.remove();}
			},'-',{
				text:'编辑',
				iconCls: 'icon-edit',
				handler: function(){Pager.edit();}
			}],
			pageSize: 15,//每页显示的记录条数，默认为10
			pageList: [15,30,50],//可以设置每页记录条数的列表  
			pagination: {
				pageNumber: 1,
		        beforePageText: '第',//页数文本框前显示的汉字  
		        afterPageText: '页    共 {pages} 页',  
		        displayMsg: '当前显示 {from} - {to} 条记录   共 {total} 条记录'
			}
			});
		});
	},
	/**
	 * Datagrid单击触发
	 * @param {} index
	 */
	onClickRow:function(index){
		if (editIndex != index){
             $('#list').datagrid('selectRow', index);
             editIndex = index;
         }
	},
	/**
	 * 判断是否正在编辑
	 */
	endEditing:function(){
		var rows = $('#list').datagrid('getRows');
        for ( var i = 0; i < rows.length; i++) {
               $('#list').datagrid('endEdit', i);
           }
	},
	/**
	 * 新增
	 */
	append:function(){
		$('#editIframe').attr('src',this.actionPrefix+'edit.do');
		$('#editWindow').window('open');
	},
	/**
	 * 编辑
	 */
	edit:function(){
		var row = $('#list').datagrid('getSelected');
		if(row){
			$('#editIframe').attr('src',this.actionPrefix+'edit.do?id='+row.id);
			$('#editWindow').window('open');
		}else{
			$.msg('请选中一条记录');
		}
	},
	/**
	 * 删除
	 */
	remove:function(){
		$.messager.confirm('操作提示', '您确定要删除选中记录吗？', function(r){
			if (r){
			  var rows = $('#list').datagrid('getSelected');
			  if(rows){
			      var ids = rows.id;
			      $.post(this.actionPrefix+'delete.do',{ids:ids},function(){
					 $('#list').datagrid('reload');
				     $.msg('删除成功');
				  });
			  }else{
			  		$.msg('请选中一条记录');
			  }
			}
		});
	},
	/**
	 * 保存
	 */
	save:function(){
		$.messager.progress();
		var isValid = $('#editForm').form('validate');
		if (!isValid){
			$.messager.progress('close');	// 如果表单是无效的则隐藏进度条
		}else{
			 var param = $('#editForm').serialize();
		     $.post(this.actionPrefix+'save.do',param,function(result){
		     	result=eval('('+result+')');
		     	if(result.type==0){
			     	parent.$('#editWindow').window('close');
			     	$.msg(result.message);
				    parent.$('#list').datagrid('reload');
		     	}else{
		     		$.msg(result.message);
		     	}
			    $.messager.progress('close');	// 如果提交成功则隐藏进度条
		     });
		}
	}
}