Easyui的增删改查

重点：
我们今天用easyui来实现增删改查
我们今天要用到的布局有datagrid,dialog,form布局，用这几个控件完成一个简单的布局
第二个重点：
1.实现前后端的分离
我们要如何实现呢，接下来
思路：
首先利用form 和dialog进行布局,然后利用datadrid进行数据的回显以及传递数据操作所需要的值，然后我们利用修改传递过来的值进行增删改查。
UserDao

package com.liuxia.dao;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
public class UserDao extends JsonBaseDao {

public List<Map<String, Object>> list(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
  String sql ="select * from t_easyui_user_version2 where true ";
  String uid= JsonUtils.getParamVal(paMap,"uid");
  String upwd= JsonUtils.getParamVal(paMap,"upwd");
  if(StringUtils.isNotBlank(uid)) {
sql +=" and uid = "+uid;
  }
  if(StringUtils.isNotBlank(upwd)) {
   sql +=" and upwd ="+upwd;
  }
 return super.executeQuery(sql, pageBean);

 }

/**
  * 修改
  * @param paMap
  * @return
  * @throws NoSuchFieldException
  * @throws SecurityException
  * @throws IllegalArgumentException
  * @throws IllegalAccessException
  * @throws SQLException
  */
  public int edit(Map<String, String[]> paMap) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException {
  String sql= "update t_easyui_user_version2 set uid=?,uname=?,upwd=? where serialno=?"; 
  return super.executeUpdate(sql,new String[] {"uid","uname","upwd","SerialNo"}, paMap);
 }

/**
  * 删除
  * @param paMap
  * @return
  * @throws NoSuchFieldException
  * @throws SecurityException
  * @throws IllegalArgumentException
  * @throws IllegalAccessException
  * @throws SQLException
  */

public int del(Map<String, String[]> paMap) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException {
  String sql ="delete from t_easyui_user_version2 where SerialNo =? ";
  return super.executeUpdate(sql, new String[] {"SerialNo"} , paMap);
 }

/**
  * 添加
  * @param paMap
  * @return
  * @throws Exception
  * @throws SecurityException
  * @throws IllegalArgumentException
  * @throws IllegalAccessException
  * @throws SQLException
  */

public int add(Map<String, String[]> paMap) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException {
  String sql ="insert  into  t_easyui_user_version2  (uid,uname,upwd)  values (?,?,?)";
  return super.executeUpdate(sql, new String[] {"uid","uname","upwd"} , paMap);
 }

/**
  * 根据当前用户登录的ID去查询对应的所有菜单
  * @param paMap
  * @param pageBean
  * @return
  * @throws InstantiationException
  * @throws IllegalAccessException
  * @throws SQLException
  */
   public List<Map<String, Object>> getMenuByUid(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
  String sql ="select * from t_easyui_usermenu where true ";
  String uid= JsonUtils.getParamVal(paMap,"uid");
  String upwd= JsonUtils.getParamVal(paMap,"upwd");
  if(StringUtils.isNotBlank(uid)) {
   sql +=" and uid = "+uid;
  }
return super.executeQuery(sql, pageBean);
}

UserAction

package com.liuxia.web;
public class UserAction extends ActionSupport {
 private UserDao userDao = new UserDao();

/**
  * 登录成功后跳转index.jsp
  * @param req
  * @param resp
  * @return
  */
  public String login(HttpServletRequest req,HttpServletResponse resp) {
//  系统中是否有当前用户
  try {
   Map<String, Object> map = null;
   try {
     map = this.userDao.list(req.getParameterMap(), null).get(0);
   } catch (Exception e) {
    req.setAttribute("msg", "用户不存在");
    return "login";
   }

 有
//  查询用户菜单中间表，获取对应的menuid的集合
   if(map != null && map.size() > 0) {
//    [{Menuid:002,...},{Menuid:003}]
    StringBuilder sb = new StringBuilder();
    List<Map<String, Object>> menuIdArr = this.userDao.getMenuByUid(req.getParameterMap(), null);
    for (Map<String, Object> m : menuIdArr) {
     002,003
     sb.append(","+m.get("menuId"));
    }
    req.setAttribute("menuIds", sb.substring(1));
    return "index";
   }else {

没有
    req.setAttribute("msg", "用户不存在");
    return "login";
   }

  } catch (InstantiationException | IllegalAccessException | SQLException e) {
   e.printStackTrace();
   return "login";
  }
  }

 /**
  * 数据加载
  * @param req
  * @param resp
  * @return
  * @throws InstantiationException
  * @throws IllegalAccessException
  * @throws SQLException
  */
  public String list(HttpServletRequest req,HttpServletResponse resp) throws InstantiationException, IllegalAccessException, SQLException {
            ObjectMapper om=new ObjectMapper();
            PageBean pageBean=new PageBean();
            pageBean.setRequest(req);

try {
             List<Map<String, Object>> list = this.userDao.list(req.getParameterMap(), pageBean);
             Map<String, Object> map= new HashMap<String,Object>();

             map.put("total",pageBean.getTotal());
             map.put("rows",list);

 ResponseUtil.write(resp,om.writeValueAsString(map));
   } catch (Exception e) {
       e.printStackTrace();
   }
   return null;

  }
 /**
  *  form组件提交方式
  * @param req
  * @param resp
  * @return
  * @throws Exception 
  * @throws JsonProcessingException 
  */

public String edit(HttpServletRequest req,HttpServletResponse resp) throws JsonProcessingException, Exception {
       try {
   int code=this.userDao.edit(req.getParameterMap());
   ObjectMapper om=new ObjectMapper();
    Map<String, Object> map= new HashMap<String,Object>();
        map.put("code",code);


   ResponseUtil.write(resp, om.writeValueAsString(map));
       } catch (NoSuchFieldException | SecurityException | IllegalArgumentException e) {

  e.printStackTrace();
 }

  return null;
 }

  /**
  * 删除
  * @param req
  * @param resq
  * @return
  */

public String del(HttpServletRequest req,HttpServletResponse resq) {
  try {
   int del = this.userDao.del(req.getParameterMap());
   ObjectMapper om =new ObjectMapper();
   ResponseUtil.write(resq, om.writeValueAsString(del));
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
 }

/**
  * 添加
  * @param req
  * @param resq
  * @return
  */
  public String add(HttpServletRequest req,HttpServletResponse resq) {
  try {
   int add = this.userDao.add(req.getParameterMap());
   ObjectMapper om =new ObjectMapper();
   ResponseUtil.write(resq, om.writeValueAsString(add));
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
 }
}

userManage.js

$(function () {
 $('#dg').datagrid({    
     url:'../userAction.action?methodName=list',
      fit:true,
      fitColumns:true,
      pagination:true,
      singleSelect:true,
       columns:[[    
         {field:'uid',title:'ID',width:100},    
         {field:'uname',title:'用户名',width:100},    
         {field:'upwd',title:'密码',width:100,align:'right'}    
     ]],

toolbar: [{
   iconCls: 'icon-add',
   handler: function(){
    $('#ff').form('clear');//清空文本框的值
       $('#dd').dialog('open');//打开表格
       $("#dd").attr("title","增加用户");//增加信息
       $("#lin").val("add"); //通过隐藏ID来设置增加方法

      }
},'-',{
   iconCls: 'icon-edit',
   handler: function(){
    $('#dd').dialog('open')
    //到datagrid控件中找需要填数据
     var row =  $('#dg').datagrid('getSelected');
      if(row){
      //get_data.php指的是回填的数据
    $('#ff').form('load',row);
   }else{
    alert('请选择你要修改的数据！');
   }
   }   

 },'-',{
  iconCls: 'icon-remove',
  handler: function(){
   var row =$('#dg').datagrid('getSelected');//选择你要删除的行
   if(row){//是否选中
    $.ajax({  

    url:'../userAction.action?methodName=del&&SerialNo='+row.SerialNo  //传一个删除del方法跟serialNo列名值
       });   
    alert('删除成功');
    $('#dg').datagrid('reload');//刷新方法
   }else{
    alert('删除失败');
   }
}

  },'-',{
   iconCls: 'icon-reload',
   handler: function(){alert('刷新按钮')}
 }]
 });
})

function ok() {
  alert('ok');
  $('#ff').form('submit', { 

 url:'../userAction.action?methodName=edit',    
      success:function(data){
       $('#ff').form('clear');
       $('#dd').dialog('close');
        $('#dg').datagrid('reload');
 /*  alert(data)  */
          //针对于后端返回的结果集进行处理
      }    
  });  
  }

userManage.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%> <!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"> <title>人员信息维护管理界面</title>
<link rel="stylesheet" type="text/css"

href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/default/easyui.css">
<link rel="stylesheet" type="text/css"
 href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/icon.css">
<script type="text/javascript"
 src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.easyui.min.js"></script>
<script type="text/javascript"
 src="${pageContext.request.contextPath }/static/js/userManage.js"></script>
</head>
<body>
 <!-- 展示数据 -->
 <table id="dg"></table>
 <!-- 弹窗 -->
 <div id="dd" class="easyui-dialog" title="编辑窗体"
 
style="width: 400px; height: 200px;"
  data-options="iconCls:'icon-save',resizable:true,modal:true,closed:true,buttons:'#bb'">
  <!-- 提交的from 表单 -->
  <form id="ff" method="post">
  <input type="hidden" name="SerialNo">
   <div>
    <label for="uid">uid:</label> <input class="easyui-validatebox"
     type="text" name="uid" data-options="required:true" />
   </div>
   <div>
    <label for="uname">uname:</label> <input class="easyui-validatebox"
     type="text" name="uname" data-options="required:true" />
   </div>
   <div>
    <label for="upwd">upwd:</label> <input class="easyui-validatebox"
     type="text" name="upwd" data-options="required:true" />
   </div>
    </form>
</div>

<a href="#" class="easyui-linkbutton" onclick="ok()">保存</a>
<a href="#" class="easyui-linkbutton">关闭</a>
</div>
</body>
</html>

全部结果出来了，数据回显还有增删改查功能