springboot + jpa实现删除数据的操作代码
作者：Dr.Disrespect
这篇文章主要介绍了springboot + jpa实现删除数据的操作代码,本文通过实例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友参考下吧
Entity层
package coolwen.demo.model;
import lombok.*;
import javax.persistence.*;
@Table(name = "t_stu")
@NoArgsConstructor
@AllArgsConstructor
@Setter
@Getter
@ToString
@Entity
public class Student {
@Id
@GeneratedValue(strategy = GenerationType.AUTO,generator = "student_id")
private int id;
private String name;
private String address;
private int age;
}dao层方法
package coolwen.demo.dao;
import coolwen.demo.model.Student;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Component;
@Component
public interface StudentDao extends JpaRepository<Student,Integer> {
// Student findByNameAndAddress(String name,String address);
void deleteById(int id);
// Page<Student> findAllByAge(int age,Pageable pageable);
} controller层方法
@GetMapping("delete")
public String deleteuser(){
return "user/DeleteUser";
}
@PostMapping("delete")
@ResponseBody
public String deleteuser(int id){
System.out.println(id);
serviceimp.deleteById(id);
return "delete suc";
}; thymeleaf前端模板
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form method="post" action="/admin/user/delete">
<input type="text" name="id">
<!-- <input type="text" name="address">-->
<input type="submit" value="提交">
</form>
</body>
</html> service层接口
package coolwen.demo.service;
import coolwen.demo.model.Student;
public interface Serviceimp {
Student findByNameAndAddress(String name,String address);
void deleteById(int id);
}service层实现类
package coolwen.demo.service;
import coolwen.demo.dao.StudentDao;
import coolwen.demo.model.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class Serviceimpl implements Serviceimp {
@Autowired
StudentDao studentDao;
@Override
public Student findByNameAndAddress(String name, String address) {
return studentDao.findByNameAndAddress(name,address);
}
@Override
public void deleteById(int id) {
studentDao.deleteById(id);
}
}
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