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  • Spring Boot从入门到精通(九)整合Spring Data JPA应用框架

    JPA

    JPAJava Persistence APISunJavaJDK 5.0XML

    JPAJava EEJava SEORMJPAHibernateTopLinkJDOORM使JPASpringEJB3.0

    Spring Data JPA

    Spring Data JPASpringORMJPAJPA使Hibernate JPA使访使Spring Data JPA

    使Spring BootSpring Data JPAJava

    Spring Data JPA

    1Maven

    1Spring Boothttp://start.spring.io/

    2

    Spring BootSpring BootSpring BootSpring BootJava

    MavenSpring Data JPA

    3Generate-Crtl+使IntelliJ IDEAFile->Project Structure -> + MavenOK

    4MaveninstallMaven

    2pom.xml

    MySQLMaven

    <dependency>
    	<groupId>mysql</groupId>
    	<artifactId>mysql-connector-java</artifactId>
    </dependency>
    

      

    spring-boot-starter-parenthjar使maven helper

    3
    application.properties

    #数据库
    spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    spring.datasource.url=jdbc:mysql://127.0.0.1:3306/dba
    spring.datasource.username=root
    spring.datasource.password=123456
    spring.jpa.hibernate.ddl-auto=none
    spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
    
    #端口号
    server.port=8080
    
    spring.jpa.show-sql=true
    spring.jpa.properties.hibernate.format_sql=true
    spring.jpa.properties.hibernate.type=trace
    spring.jpa.properties.hibernate.use_sql_comments=true
    spring.jpa.properties.hibernate.jdbc.batch_size=50
    logging.level.org.hibernate.type.descriptor.sql=trace
    

      

    4BootUserBootUserMySQL

    package com.yoodb.study.demo05.entity;
    
    import javax.persistence.*;
    import java.io.Serializable;
    
    @Entity
    @Table(name="boot_user")
    public class BootUser implements Serializable {
        @Id
        //strategy=GenerationType.IDENTITY 自增长
        @GeneratedValue(strategy= GenerationType.IDENTITY)
        @Column(name="id")
        private String id;
    
        @Column(name="user_name")
        private String name;
    
        @Column(name="detail")
        private String detail;
    
        public String getId() {
            return id;
        }
    
        public void setId(String id) {
      this.id=id;
    }
    
    publicStringgetName(){
    returnname;
    }
    
    publicvoidsetName(Stringname){
    this.name=name;
    }
    
    publicStringgetDetail(){
    returndetail;
    }
    
    publicvoidsetDetail(Stringdetail){
    this.detail=detail;
    }
    }
    

      

    5RepositoryUserRepository

    package com.yoodb.study.demo05.repository;
    
    import com.yoodb.study.demo05.entity.BootUser;
    import org.springframework.data.jpa.repository.JpaRepository;
    
    public interface UserRepository extends JpaRepository<BootUser, Integer> {
    
    }
    

      

    6UsersDaoImplTest

    package com.yoodb.study.demo05;
    
    import com.yoodb.study.demo05.repository.UserRepository;
    import com.yoodb.study.demo05.entity.BootUser;
    
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.annotation.Rollback;
    
    import javax.transaction.Transactional;
    
    @SpringBootTest
    public class UsersDaoImplTest  {
        @Autowired
        private UserRepository userRepository;
    
        /**
         * 添加用户
         */
     @Test
    @Transactional//对于事务提交方式默认回滚
    @Rollback(false)//取消自动回滚
    publicvoidtestInsertUsers(){
    BootUserusers=newBootUser();
    users.setName("关注微信公众号“Java精选”");
    users.setDetail("SpringBoot从入门到精通系列文章持续更新中,带你从入门到精通,玩转SpringBoot框架。");
    this.userRepository.save(users);
    }
    
    }
    

      

    7IntelliJ IDEA

    Error running 'UsersDaoImplTest.testInsertUsers': Failed to resolve org.junit.platform:junit-platform-launcher:1.6.0

    IntelliJ使IDEAMaven settings.xmlMaven CentralMavenpom.xml

    <dependency>
    	<groupId>org.junit.platform</groupId>
    	<artifactId>junit-platform-launcher</artifactId>
    	<scope>test</scope>
    </dependency>

    来源:素文宅博客

    转自:https://blog.yoodb.com/yoodb/article/detail/1574

    Spring BootSpring Data JPAspringboot-study-demo05https://github.com/yoodb/springboot

    Spring bootSpring Data JPA便

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  • 原文地址:https://www.cnblogs.com/MrYoodb/p/12501384.html
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