Detailed explanation of mybatis using PageHelper plug-in

This article mainly introduces the detailed process of mybatis using PageHelper plug-in. The example code is introduced in great detail, which has certain reference value for everyone's study or work. Friends in need can refer to it

1. Add plug-in dependencies

<dependency>
  <groupId>com.github.pageHelper</groupId>
  <artifactId>pageHelper</artifactId>
  <version>5.0.4</version>
</dependency>
<dependency>
  <groupId>com.github.pageHelper</groupId>
  <artifactId>pageHelper-spring-boot-autoconfigure</artifactId>
  <version>1.2.5</version>
</dependency>
<dependency>
  <groupId>com.github.pageHelper</groupId>
  <artifactId>pageHelper-spring-boot-starter</artifactId>
  <version>1.2.5</version>
</dependency>

2. Add profile

pageHelper.helper-dialect=MysqL
pageHelper.params=count=countsql
pageHelper.reasonable=true
pageHelper.support-methods-arguments=true

3. Create a new test class

@GetMapping("/list")
@ResponseBody
public PageInfo<User>getUserList(){
//分页起始也页数和条数
 pageHelper.startPage(0,5);
//调用查询方法，此时的查询方法已经是分页返回的数据
 List<User> list=userService.selectAll();
//封装分页参数返回给前台
PageInfo pageInfo = new PageInfo(list);
return pageInfo;
}

If it fails, you can add AOP dependency in POM

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

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