五、数据库操作
1.Spring-Data-Jpa
2.实现的接口
2.1 POM文件
增加Spring-Data-Jpa和mysql组件
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.32</version>
</dependency>
2.2配置
2.3创建实体类Girl
需要用到@Entity,@Id,@GenerateValue
数据库将自动生成表
2.4创建一个接口GirlRepository
2.5创建一个Controller
package com.tonny;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import java.util.List;
public class GirlController {
@Autowired
private GirlRepository girlRepository;
@GetMapping("/girls")
public List<Girl> girllist(){
return girlRepository.findAll();
}
}
访问http://127.0.0.1:8080/girls
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