• EasyUI Datagrid的简单使用


    此前同样写过EasyUI Datagrid的demo,好记性不如烂笔头,何况记性也不是那么好,赶紧记录一下。照搬上一篇EasyUI Tree的格式。

    实现效果:获取数据库表的数据,在EasyUI Datagrid上展示出来并使用分页控件进行分页。

    项目、框架、数据库:创建的是Maven项目,采用Spring+SpringMVC+Mybatis框架,数据库SQL Server 2005

    1.创建数据库表

    表结构:

    表数据:

    2.通过mybatis逆向工程映射TreeTestTable(表名略丑)

    TreeTestTable表的实体类代码:

    package com.lwl.EasyUIDemo.bean;
    
    public class TreeTestTable {
        private Integer id;
    
        private Integer pid;
    
        private String value;
        
        set/get方法...
    }

    3.编写DatagridBean类(由于实际使用中表结构不同,因此需要编写一个类用于将获取到的数据对象转为前端Datagrid能够读取并加载的数据格式):

    package com.lwl.EasyUIDemo.pojo;
    
    import java.util.List;
    
    
    public class DatagridBean {
        
        private int page;        // 当前第几页
        private int total;        // 数据总条数
        private List<?> rows;    // 数据列表
        
        public DatagridBean(int page, long total, List<?> rows) {
            this.page = page;
            this.total = (int)total;
            this.rows = rows;
        }
        set/get方法...
    }

     4.编写Controller层代码:

    package com.lwl.EasyUIDemo.controller;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import com.alibaba.fastjson.JSON;
    import com.github.pagehelper.PageHelper;
    import com.github.pagehelper.PageInfo;
    import com.lwl.EasyUIDemo.bean.TreeTestTable;
    import com.lwl.EasyUIDemo.pojo.DatagridBean;import com.lwl.EasyUIDemo.service.TreeTestTableService;
    
    @Controller
    public class TestController {
        
        @Autowired
        private TreeTestTableService treeService;
        
        
        /**
         * DataGrid数据获取
         */
        @RequestMapping("/getDatagrid")
        @ResponseBody
        public JSON getList(int page,int rows){
            PageHelper.startPage(page, rows);
            List<TreeTestTable> list = treeService.getData();
            PageInfo<TreeTestTable> pageInfo = new PageInfo<>(list);
            DatagridBean datagridBean = new DatagridBean(page, pageInfo.getTotal(),list);
            return (JSON) JSON.toJSON(datagridBean);
        }
        
    }

    5.对照controller层方法所引用的service方法来创建service接口:

    package com.lwl.EasyUIDemo.service;
    
    import java.util.List;
    
    import com.lwl.EasyUIDemo.bean.TreeTestTable;
    
    public interface TreeTestTableService {
    
        /**
         * 获取表的全部数据
         * @return
         */
        List<TreeTestTable> getData();
    
    }

    Service实现类:

    package com.lwl.EasyUIDemo.serviceImpl;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.lwl.EasyUIDemo.bean.TreeTestTable;
    import com.lwl.EasyUIDemo.bean.TreeTestTableExample;
    import com.lwl.EasyUIDemo.dao.TreeTestTableMapper;
    import com.lwl.EasyUIDemo.service.TreeTestTableService;
    @Service
    public class TreeTestTableServiceImpl implements TreeTestTableService {
    
        @Autowired
        private TreeTestTableMapper tableMapper;
    
        /**
         * 获取表的全部数据
         */
        public List<TreeTestTable> getData() {
            return tableMapper.selectByExample(null);
        }
    }

     6.编写jsp页面(关于EasyUI的使用格式等请自行查看EasyUI API文档):

    <%@ page language="java" contentType="text/html; charset=utf-8"
        pageEncoding="utf-8"%>
    <% pageContext.setAttribute("path", request.getContextPath()); %>
    <!DOCTYPE>
    <html>
    <head>
    <title>EasyUI实例</title>
    <!-- 载入easyui样式及图标样式 -->
    <link rel="stylesheet" type="text/css" href="${path }/easyui/themes/default/easyui.css">
    <link rel="stylesheet" type="text/css" href="${path }/easyui/themes/icon.css">
    <!-- 载入jquery支持文件(必须写在其他js文件前)、easyui支持文件、easyui中文支持文件 -->
    <script type="text/javascript" src="${path }/easyui/jquery.min.js"></script>
    <script type="text/javascript" src="${path }/easyui/jquery.easyui.min.js"></script>
    <script type="text/javascript" src="${path }/easyui/locale/easyui-lang-zh_CN.js"></script>
    </head>
    <body>
    
    <table id="dg"></table>
    
    <script>
    $('#dg').datagrid({    
        url:'getDatagrid',    
        columns:[[    
            {field:'id',title:'节点',100},    
            {field:'pid',title:'父节点',100},    
            {field:'value',title:'内容',100}    
        ]],
        striped:true,    // 斑马线
        pagination:true,// 分页
    }); 
    </script>
    </body>
    </html>

     运行看一下效果:

    需要注意的重点是DatagridBean的编写与controller请求数据的接收,数据的返回。 

    以上仅仅是本人接触EasyUI Datagrid编写的简单例子,有任何理解或做法上的错误,欢迎批评指正!

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  • 原文地址:https://www.cnblogs.com/new-life/p/9059632.html
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