mybatis 整合pageHelper

1.引入依赖，注意引入springboot整合的依赖

如果不引入的不是springboot整合的依赖，需maven 引入插件

      <!-- 分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>

2 配置application.proterties

pagehelper.helper-dialect=mysql
pagehelper.reasonable=true
pagehelper.support-methods-arguments=true
pagehelper.params=count=countSql

3. 写sql语句

  <select id="findAll" resultMap="BaseResultMap">
      select
      <include refid="Base_Column_List"/>
      from t_user
  </select>

4 service实现分页

    public PageInfo<User> findAll(int currentPage, int pageSize) {
        PageHelper.startPage(currentPage,pageSize);
         List<User> list = userMapper.findAll();
        return new PageInfo<User>(list);
    }

5.controller调用

   @RequestMapping("page")
    public PageInfo<User> page(int currentPage, int pageSize){
        return userService.findAll(currentPage, pageSize);
    }

6.调用结果显示

// 20190622090951
// http://127.0.0.1:8082/page?currentPage=3&pageSize=3

{
  "pageNum": 3,
  "pageSize": 3,
  "size": 3,
  "startRow": 7,
  "endRow": 9,
  "total": 10,
  "pages": 4,
  "list": [
    {
      "id": 9,
      "username": "bajie",
      "password": "123456",
      "createTime": "2019-06-21T16:00:00.000+0000",
      "trueName": "猪八戒",
      "remarks": null,
      "bz": null
    },
    {
      "id": 10,
      "username": "wukong",
      "password": "123456",
      "createTime": "2019-06-21T16:00:00.000+0000",
      "trueName": "孙悟空",
      "remarks": null,
      "bz": null
    },
    {
      "id": 11,
      "username": "shasheng",
      "password": "123456",
      "createTime": "2019-06-21T16:00:00.000+0000",
      "trueName": "沙悟净",
      "remarks": null,
      "bz": null
    }
  ],
  "prePage": 2,
  "nextPage": 4,
  "isFirstPage": false,
  "isLastPage": false,
  "hasPreviousPage": true,
  "hasNextPage": true,
  "navigatePages": 8,
  "navigatepageNums": [
    1,
    2,
    3,
    4
  ],
  "navigateFirstPage": 1,
  "navigateLastPage": 4,
  "firstPage": 1,
  "lastPage": 4
}