SpringBoot+MyBatis-Plus实现分页功能

import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MybatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.H2)); // 根据你的数据库类型选择相应的DbType
        return interceptor;
    }
}

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.apache.ibatis.annotations.Select;
import your.package.name.EntityClass; 

public interface YourMapper extends BaseMapper<EntityClass> {
    // 使用MP提供的分页功能，不需要编写具体的分页SQL
    IPage<EntityClass> selectPageList(Page<EntityClass> page, QueryWrapper<EntityClass> queryWrapper);
}

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import your.package.name.EntityClass; 
import your.package.name.YourMapper; 

@Service
public class YourService {
    @Autowired
    private YourMapper yourMapper;
    
    public Page<EntityClass> getPageList(int current, int size) {
        // 创建分页对象，current为当前页码，size为每页显示的数量
        Page<EntityClass> page = new Page<>(current, size);
        // 调用Mapper方法进行分页查询，这里假设没有额外的查询条件，如果有可以使用QueryWrapper添加条件
        return yourMapper.selectPage(page, null); // 如果你的Mapper没有定义selectPageList方法，请使用BaseMapper中的selectPage方法代替
    }
}

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import your.package.name.EntityClass; 
import your.package.name.YourService; 

@RestController
@RequestMapping("/your-endpoint")
public class YourController {
    @Autowired
    private YourService yourService;
    
    @GetMapping("/page") // 分页查询的API路径，例如/your-endpoint/page?current=1&size=10
    public Page<EntityClass> getPageList(@RequestParam int current, @RequestParam int size) {
        // 调用服务层方法进行分页查询，并返回结果给前端
        return yourService.getPageList(current, size); // 这里的方法名应与服务层一致
    }
}