先完成這個

1.專案結構

2.新增IService.class、BaseService.class

package com.xpf.service;

import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 通用介面
 */
@Service
public interface IService<T> {

    T selectByKey(Object key);

    int save(T entity);

    int delete(Object key);

    int updateAll(T entity);

    int updateNotNull(T entity);

    List<T> selectByExample(Object example);

    //TODO 其他...

}

 

package com.xpf.service.impl;

import com.xpf.service.IService;
import org.springframework.beans.factory.annotation.Autowired;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

public abstract class BaseService<T> implements IService<T> {
    @Autowired
    protected Mapper<T> mapper;

    public Mapper<T> getMapper() {
        return mapper;
    }

    @Override
    public T selectByKey(Object key) {
        return mapper.selectByPrimaryKey(key);
    }

    public int save(T entity) {
        return mapper.insert(entity);
    }

    public int delete(Object key) {
        return mapper.deleteByPrimaryKey(key);
    }

    public int updateAll(T entity) {
        return mapper.updateByPrimaryKey(entity);
    }

    public int updateNotNull(T entity) {
        return mapper.updateByPrimaryKeySelective(entity);
    }

    public List<T> selectByExample(Object example) {
        return mapper.selectByExample(example);
    }

    //TODO 其他...
}

 

2.新增service

package com.xpf.service;

import com.xpf.domain.UserInfo;

public interface UserService extends IService<UserInfo> {
}

package com.xpf.service;

import com.xpf.domain.UserInfo;

public interface UserService extends IService<UserInfo> {
}

3.測試

package com.xpf;

import com.xpf.domain.SysRoles;
import com.xpf.domain.UserInfo;
import com.xpf.mapper.SysRolesMapper;
import com.xpf.mapper.UserInfoMapper;
import com.xpf.service.UserService;
import org.apache.catalina.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootMapperApplicationTests {

    @Autowired
    UserInfoMapper userInfoMapper;

    @Autowired
    SysRolesMapper sysRolesMapper;


    @Autowired
    UserService userService;
    @Test
    public void contextLoads() {
    }

    @Test
    public void tsetfindUser(){
        System.out.println(userInfoMapper.selectByPrimaryKey(1));

        System.out.println(sysRolesMapper.selectByPrimaryKey(1));

        System.out.println(userService.selectByKey(1));

/*
        UserInfo userInfo=new UserInfo();
        userInfo.setUid(1);

        System.out.println(userInfoMapper.selectOne(userInfo));*/
    }
}

 

4.結果