Spring Boot 13-springjpa

桃扇骨 2021-11-01 08:30 269阅读 0赞

springboot整合springjpa
    
    首先我们引入jar

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-jpa</artifactId>
            </dependency>

配置数据源

spring.datasource.url=jdbc:mysql://ip:port/geex
    spring.datasource.username=
    spring.datasource.password=
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver

model

package com.tzp.springjpa.model;
    
    import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.Table;
    
    @Table(name = "user")
    @Entity(name = "users")
    public class UserEntity {
    
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Integer id;
    
        @Column(name = "name")
        private String name;
    
        @Column(name = "age")
        private Integer age;
    
        public Integer getId() {
            return id;
        }
    
        public void setId(Integer id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
    }

dao

package com.tzp.springjpa.dao;
    
    import org.springframework.data.jpa.repository.JpaRepository;
    
    import com.tzp.springjpa.model.UserEntity;
    
    public interface UserDao extends JpaRepository<UserEntity, Integer>{
    }

controller

package com.tzp.springjpa.controller;
    
    import java.util.Optional;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.tzp.springjpa.dao.UserDao;
    import com.tzp.springjpa.model.UserEntity;
    
    @RestController
    public class IndexController {
    
        @Autowired
        private UserDao userDao;
        
        @RequestMapping("/jpaIndex")
        public Object jpaIndex(UserEntity user) {
            userDao.saveAndFlush(user);
            Optional<UserEntity> optional = userDao.findById(user.getId());
            UserEntity userEntity = optional.get();
            return userEntity == null?"存储数据失败！":userEntity;
        }
    }

转载于:https://www.cnblogs.com/zengpingtang/p/10853876.html