SpringBoot整合SpringDataJPA

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Java鱼头

发布于 2022-12-01 14:55:00

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代码可运行

SpringBoot整合SpringDataJPA

1. 添加依赖

2. 添加配置文件

# jdbc 的相关信息
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/logistics?characterEncoding=utf-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456

# 配置连接池信息
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

# 配置jpa的相关参数
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true

3. 创建POJO

package com.bobo.pojo;

import javax.persistence.*;
import java.io.Serializable;

@Table(name = "t_user")
@Entity
public class Users implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name="user_id")
    private Integer userId;

    @Column(name="user_name")
    private String usreName;

    @Column(name="real_name")
    private String realName;

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public String getUsreName() {
        return usreName;
    }

    public void setUsreName(String usreName) {
        this.usreName = usreName;
    }

    public String getRealName() {
        return realName;
    }

    public void setRealName(String realName) {
        this.realName = realName;
    }
}

4. 创建接口

package com.bobo.dao;

import com.bobo.pojo.Users;
import org.springframework.data.jpa.repository.JpaRepository;

public interface UsersRepository extends JpaRepository<Users,Integer> {
}

5. 测试

package com.bobo;

import com.bobo.dao.UsersRepository;
import com.bobo.pojo.Users;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class SpringdatajpaSpringbootApplicationTests {

    @Autowired
    private UsersRepository dao;

    @Test
    void contextLoads() {
        Users users = new Users();
        users.setUsreName("test1");
        users.setRealName("测试数据");
        dao.save(users);
    }

}