1.依赖

<!-- https://mvnrepository.com/artifact/tk.mybatis/mapper-spring-boot-starter -->
<dependency>
	<groupId>tk.mybatis</groupId>
	<artifactId>mapper-spring-boot-starter</artifactId>
	<version>2.1.5</version>
</dependency>

2.mapper

import tk.mybatis.mapper.common.Mapper;

public interface CommonMapper<T> extends Mapper<T>{

}

3.service

3.1.CommonService

import java.util.List;

public interface CommonService<T> {

	/**
	 * 插入（null也会插入）
	 * @param model
	 * @return
	 */
	int insert(T model);
	
	/**
	 * 插入（null）不会插入
	 * @param model
	 * @return
	 */
	int insertSelective(T model);
	
	int delete(T model);
	
	/**
	 * 更新null
	 * @param model
	 * @return
	 */
	int update(T model);
	
	/**
	 * 不更新null
	 * @param model
	 * @return
	 */
	int updateSelective(T model);
	
	T one(T model);
	
	T one(Integer key);
	
	List<T> list();
	
	List<T> list(T model);
}

3.2.CommonServiceImpl

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.gr.common.CommonMapper;
import com.gr.common.CommonService;

@Service
public class CommonServiceImpl<T> implements CommonService<T>{
	
	@Autowired
	private CommonMapper<T> mapper;
	
	@Override
	public int insert(T model) {
		return mapper.insert(model);
	}

	@Override
	public int insertSelective(T model) {
		return mapper.insertSelective(model);
	}
	
	
	@Override
	public int delete(T model) {
		return mapper.delete(model);
	}

	@Override
	public int update(T model) {
		return mapper.updateByPrimaryKey(model);
	}
	
	@Override
	public int updateSelective(T model) {
		return mapper.updateByPrimaryKeySelective(model);
	}
	
	@Override
	public T one(T model) {
		return mapper.selectOne(model);
	}

	@Override
	public T one(Integer key) {
		return mapper.selectByPrimaryKey(key);
	}

	@Override
	public List<T> list() {
		return mapper.selectAll();
	}

	@Override
	public List<T> list(T model) {
		return mapper.select(model);
	}

}

4.启动类

从tk.mybatis.spring.annotation.MapperScan引入@MapperScan("com.xx.mapper")注解

5.业务mapper

import com.gr.common.CommonMapper;
import com.gr.entity.Members;

public interface MembersMapper extends CommonMapper<Members>{

}

6.业务service

6.1.接口

import com.gr.common.CommonService;
import com.gr.entity.Members;

public interface MembersService extends CommonService<Members>{

}

6.2.实现类

import org.springframework.stereotype.Service;

import com.gr.common.impl.CommonServiceImpl;
import com.gr.entity.Members;
import com.gr.service.MembersService;

@Service
public class MembersServiceImpl extends CommonServiceImpl<Members> implements MembersService{

}

7.controller

import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.gr.service.MembersService;

@RestController
@RequestMapping("/qrcode/members")
public class MembersController {
	
	@Autowired
	private MembersService membersService;
	
	@RequestMapping("/list")
	public Map<String, Object> list(){
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("list", membersService.list());
		return map;
	}
	
}

8.pagehelper

8.1.依赖

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

8.2.实现

@RequestMapping("/list")
public Map<String, Object> list(Integer pageNo, Integer pageSize){
	PageHelper.startPage(pageNo,pageSize);
	Map<String, Object> map = new HashMap<String, Object>();
	PageInfo<Members> pageInfo = new PageInfo<>(membersService.list());
	map.put("list", pageInfo);
	map.put("code", 200);
	return map;
}

9.结束

本文地址：https://blog.csdn.net/qq_42130732/article/details/111996204