easyui三

陈旧的开发模式
美工（ui工程师：出一个项目模型）
java工程师：将原有的html转成jsp，动态展示数据
缺点：
客户需要调节前端的展示效果
解决：由美工去重新排版，重新选色。
Vs
前后端分离
美工、java工程师都是独立工作的，彼此之间在开发过程中是没有任何交际。
在开发前约定数据交互的格式。
java工程师的工作：写方法返回数据如tree_data1.json
美工：只管展示tree_data1.json

先看下dao方法

public class UserDao extends JsonBaseDao {
    /**
     * 用户登录或者查询用户分页信息的公共方法
     * 
     * @param paMap
     * @param pageBean
     * @return
     * @throws InstantiationException
     * @throws IllegalAccessException
     * @throws SQLException
     */
    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);
    }
    /**
     * 新增
     * @param paMap
     * @return
     * @throws NoSuchFieldException
     * @throws SecurityException
     * @throws IllegalArgumentException
     * @throws IllegalAccessException
     * @throws SQLException
     */

    public int add(Map<String, String[]> paMap) throws NoSuchFieldException, SecurityException,
            IllegalArgumentException, IllegalAccessException, SQLException {
        String sql = "insert into  t_easyui_user_version2 values(?,?,?)";
        return super.executeUpdate(sql, new String[] { "uid", "uname", "upwd" }, paMap);
    }
    /**
     * 删除
     * @param paMap
     * @return
     * @throws NoSuchFieldException
     * @throws SecurityException
     * @throws IllegalArgumentException
     * @throws IllegalAccessException
     * @throws SQLException
     */
    
    public int del(Map<String, String[]> paMap) throws NoSuchFieldException, SecurityException,
        IllegalArgumentException, IllegalAccessException, SQLException {
        String sql = "delete from t_easyui_user_version2 where SerialNo=?";
        return super.executeUpdate(sql, new String[] {"SerialNo"}, 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");
        if (StringUtils.isNotBlank(uid)) {
            sql += " and uid=" + uid;
        }
        return super.executeQuery(sql, pageBean);
    }

}

userAction

public class UserAction extends ActionSupport{
     private UserDao userDao=new UserDao();
    /**
     * 登录成功后跳转index.jsp
     * @param request
     * @param response
     * @return
     * @throws SQLException 
     * @throws IllegalAccessException 
     * @throws InstantiationException 
     */
     public String login(HttpServletRequest request,HttpServletResponse response){
           //系统中是否有当前登录用户
         Map<String, Object> map =null;
        try {
            map = this.userDao.list(request.getParameterMap(), null).get(0);
             //有
            if(map!=null&&map.size()>0) {
                //[{menuid:002,....},{menuid:003,....}]
                //002,003
                StringBuilder sb=new StringBuilder();
                List<Map<String, Object>> menuIdArr = this.userDao.getMenuByUid(request.getParameterMap(), null);
                for (Map<String, Object> m : menuIdArr) {
                    sb.append(","+m.get("menuId"));
                }
                request.setAttribute("menuIds",sb.substring(1));
                return "index";
            }else {
                request.setAttribute("msg","用户不存在");
                return "login";
            }
        } catch (InstantiationException | IllegalAccessException | SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
         //查询用户菜单中间表，获取menuid的集合
        return null;
        }  
     /**
      * 数据表格datagrid加载方法?
      * @param request
      * @param response
      * @return
      * @throws Exception
      */
     public String list(HttpServletRequest request,HttpServletResponse response) throws Exception {
        ObjectMapper om=new ObjectMapper();
        PageBean pageBean=new PageBean();
        pageBean.setRequest(request);
        List<Map<String, Object>> list = this.userDao.list(request.getParameterMap(), pageBean);
        System.err.println(list);
        //[{},{},{}]-->{"total":28,"rows":[{},{},{}]}
        Map<String, Object> map=new HashMap<>();
        map.put("total", pageBean.getTotal());
        map.put("rows", list);
        ResponseUtil.write(response,om.writeValueAsString(map));
         return null;
            }  
     /**
      * from组件提交方法?
      * @param request
      * @param response
      * @return
      * @throws Exception
      */
    public String edit(HttpServletRequest request,HttpServletResponse response) throws Exception {
             int code = this.userDao.edit(request.getParameterMap());
             ObjectMapper om=new ObjectMapper();
             Map<String, Object> map=new HashMap<>();
             map.put("code", code);
             ResponseUtil.write(response,om.writeValueAsString(map));
             return null;
                }  
    /**
     * 新增
     * @param request
     * @param response
     * @return
     * @throws Exception
     */
    public String add(HttpServletRequest request,HttpServletResponse response) throws Exception {
         int code = this.userDao.add(request.getParameterMap());
         ObjectMapper om=new ObjectMapper();
         Map<String, Object> map=new HashMap<>();
         map.put("code", code);
         ResponseUtil.write(response,om.writeValueAsString(map));
         return null;
            }  
    /**
     * 删除
     * @param req
     * @param resp
     * @return
     * @throws InstantiationException
     * @throws IllegalAccessException
     * @throws SQLException
     * @throws Exception
     */
    public String del(HttpServletRequest req,HttpServletResponse resp) throws InstantiationException, IllegalAccessException, SQLException, Exception {
        int code=this.userDao.del(req.getParameterMap());
        ObjectMapper om = new ObjectMapper();
        Map<String, Object> map = new HashMap<>();
        map.put("code", code);
        ResponseUtil.write(resp, om.writeValueAsString(map));
        return null;
    }

}

后台就是代码，下面看下前端代码

userManage.js

$(function(){
    $('#dg').datagrid({    
        url:'../userAction.action?methodName=list', 
        //行填充
        fit:true,
        //列填充
        fitColumns:true,
        //分页
        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'}    
        ]],
            //添加按钮
            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
                     $("#method").val("add"); //通过隐藏ID来设置增加方法    
                }
            },'-',{
                 iconCls: 'icon-edit',
           handler: function(){
           $('#dd').dialog('open');
//                到datagrid控件中找需要回填的数据（区别于原来从后台查询）
           var row = $('#dg').datagrid('getSelected');
           if(row){
//                get_data.php指的是回填的数据
                $('#ff').form('load',row);
                $('#method').val('edit');
           }else{
                     alert("请选择你要修改的行");
            }
             }
              },'-',{
                iconCls: 'icon-remove',
                handler: function(){
                var row =$('#dg').datagrid('getSelected');
                if(row){
                $.ajax({  
                url:$("#ctx").val()+'/userAction.action?methodName=remove&&SerialNo='+row.SerialNo,  
                 });   
                $('#dg').datagrid('reload');//刷新方法
                      alert('删除成功');
                  }
                else{
                     alert('删除失败');
                }
                 }
                  },'-',{
                     iconCls: 'icon-reload',
                     handler: function(){alert('刷新按钮')}
                     }]
                  
                  }); 
                  
            })
function ok(){
    $('#ff').form('submit', {    
        url:'../userAction.action?methodName=edit',    
        success:function(data){   
            $('#ff').form('clear')
           $('#dd').dialog('close');
           $('#dg').datagrid('reload');
            //针对于后端返回的结果进行处理
        }    
    });  

}

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">
<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>
<!--展示数据  -->
<title>人员信息管理维护界面</title>
</head>
<body>
<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'">   
    Dialog Content.    

<!--提交form 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" />   
    </div> <br>
    <div>   
        <label for="uname">uname:</label>   
        <input class="easyui-validatebox" type="text" name="uname"  />   
    </div> 
    <div>   <br>
        <label for="uname">upwd:</label>   
        <input class="easyui-validatebox" type="text" name="upwd"  />   
    </div>  
</form> 
<div id="bb">
<a href="#" id="name" class="easyui-linkbutton" value="edit" onclick="ok()">保存</a>
<a href="#" class="easyui-linkbutton">关闭</a>
</div>

 
</div> 
</body>
</html>