14、通過jpa往數據庫插數據

這是接着上一篇寫的，在上一篇的基礎上添加

Controller

@RestController
public class HelloController {

    @Resource
    private HelloService helloService;

    @RequestMapping("/hello")
    public String hello(){
        return "hello";
    }

    @RequestMapping("/saveUser")
    public String user(){
        User u = new User();
        u.setPassword("1");
        u.setUser_name("123");
        u.setAge(1);
        helloService.saveUser(u);
        return "success";
    }
}

Service

import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * Created by Administrator on 2017/5/27 0027.
 */
@Service
public class HelloService {

    @Resource
    private HelloDao helloDao;

    public void saveUser(User u) {
        helloDao.save(u);
    }
}

Dao（接口，實現了CrudRepository<User,Long>）

public interface  HelloDao extends CrudRepository<User,Long>{
}

然后運行項目，輸入：http://localhost:8080/saveUser

表中會多了

一條記錄