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初学spring boot 记录下过程-整合mybatis实现分页查询(四)

2018-06-08 11:58 851 查看 
首先引入2个依赖
<!--转json--><dependency><groupId>net.sf.json-lib</groupId><artifactId>json-lib</artifactId><version>2.4</version><classifier>jdk15</classifier></dependency><!--分页--><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper-spring-boot-starter</artifactId><version>1.2.3</version></dependency>
添加分页配置
pagehelper:  helper-dialect: mysqlreasonable: truesupport-methods-arguments: trueparams: count=countSql
在static下新建一个html页面，这里使用的是刚开始接触的layui
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><link rel="stylesheet" href="layui/css/layui.css"  media="all"><script type="text/javascript" src="layui/layui.js"></script><script type="text/javascript" src="jquery-easyui-1.3.2/jquery-1.8.0.min.js"></script></head><body><table class="layui-hide" id="test"></table></body><script>layui.use('table', function(){var table = layui.table;table.render({elem: '#test'            ,url:'/user/select'            ,cellMinWidth: 80 //全局定义常规单元格的最小宽度，layui 2.2.1 新增,page: true //开启分页,cols: [[{field:'id', width:80, title: 'ID', sort: true},{field:'username', width:80, title: '用户名'},{field:'password', width:80, title: '密码', sort: true},{field:'city', width:80, title: '城市'},{field:'write', title: '写作'} //minWidth：局部定义当前单元格的最小宽度，layui 2.2.1 新增,{field:'read', title: '阅读', sort: true},{field:'dai', title: '发呆', sort: true},{field:'on', title: '开关'},{field:'sex', width:137, title: '性格', sort: true},{field:'desc', width:137, title: '备注'}]]});});</script>

</html>

mybatis配置文件

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.example.demo1.dao.UserDao"><resultMap id="BaseResultMap" type="com.example.demo1.model.User"><id column="id" property="id" jdbcType="INTEGER"/><result column="username" property="username" jdbcType="VARCHAR"/><result column="password" property="password" jdbcType="VARCHAR"/><result column="city" property="city" jdbcType="VARCHAR"/><result column="write" property="write" jdbcType="VARCHAR"/><result column="read" property="read" jdbcType="VARCHAR"/><result column="dai" property="dai" jdbcType="VARCHAR"/><result column="on" property="on" jdbcType="VARCHAR"/><result column="sex" property="sex" jdbcType="VARCHAR"/><result column="desc" property="desc" jdbcType="VARCHAR"/><result column="createDate" property="createDate" jdbcType="DATE"></result></resultMap><select id="selectAll" resultMap="BaseResultMap">SELECT * FROM USER</select></mapper>
mapper类添加一个方法@Mapperpublic interface UserDao {List<User> selectAll();}
接口类public interface UserService {List<User> selectAll(Integer page, Integer limit);}
业务实现类
@Servicepublic class UserServiceImpl implements UserService {@Autowiredprivate UserDao userDao;@Overridepublic List<User> selectAll(Integer page,Integer limit) {List<User> userList = userDao.selectAll();return userList;}}
控制层执行调用@Controller@RequestMapping("/user")public class UserController {@Autowiredprivate UserService service;@RequestMapping("/select")@ResponseBodypublic String select(@RequestParam("page") Integer page,@RequestParam("limit") Integer limit){JSONObject map = new JSONObject();PageHelper.startPage(page -1, limit);List<User> userList = service.selectAll(page,limit);//设置返回的总记录数PageInfo<User> pageInfo=new PageInfo<>(userList);map.put("code",0);map.put("msg","");map.put("count",pageInfo.getTotal());map.put("data",userList);return map.toString();}}
最后返回的结果

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