【极光系列】springBoot集成Hibernate-阿里云开发者社区

【极光系列】springboot集成hibernate

gitee地址

直接下载可用 https://gitee.com/shawsongyue/aurora.git

模块：aurora_hibernate

mysql安装教程

参考我另外一篇文章，直接下载安装

集成hibernate步骤

tips：包结构如图

1.处理数据库表

CREATE DATABASE aurora;
CREATE TABLE `tianchi_resource` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '自增主键',
  `resource_name` varchar(128) DEFAULT NULL COMMENT '资源名称',
  `resource_path` varchar(255) DEFAULT NULL COMMENT '资源路径',
  `resource_icon` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL COMMENT '资源图标',
  `resource_icon_color` varchar(32) DEFAULT NULL COMMENT '资源图标颜色',
  `resource_describe` varchar(255) DEFAULT NULL COMMENT '资源描述',
  `resource_author` varchar(16) DEFAULT NULL COMMENT '资源作者',
  `resource_type` varchar(16) DEFAULT NULL COMMENT '资源类型',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=12 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
INSERT INTO `aurora`.`tianchi_resource` (`id`, `resource_name`, `resource_path`, `resource_icon`, `resource_icon_color`, `resource_describe`, `resource_author`, `resource_type`, `create_time`, `update_time`) VALUES (12, 'colorUI资源包', 'http://baidu.com', 'tag', 'red', 'colorUI资源包一键下载可用', 'aurora', '1', '2024-01-14 15:26:12', '2024-01-14 15:26:12');
INSERT INTO `aurora`.`tianchi_resource` (`id`, `resource_name`, `resource_path`, `resource_icon`, `resource_icon_color`, `resource_describe`, `resource_author`, `resource_type`, `create_time`, `update_time`) VALUES (13, 'idea开开发工具资源包', 'http://baidu.com', 'tag', 'red', 'idea开开发工具资源包一键下载可用', 'aurora', '1', '2024-01-14 15:26:12', '2024-01-14 15:26:12');

2.处理依赖pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.xsy</groupId>
    <artifactId>aurora_hibernate</artifactId>
    <version>1.0-SNAPSHOT</version>
    <!--基础SpringBoot依赖-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.5.RELEASE</version>
    </parent>
    <!--属性设置-->
    <properties>
        <!--java_JDK版本-->
        <java.version>1.8</java.version>
        <!--maven打包插件-->
        <maven.plugin.version>3.8.1</maven.plugin.version>
        <!--编译编码UTF-8-->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <!--输出报告编码UTF-8-->
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!--mysql版本-->
        <mysql-connector-java.version>8.0.21</mysql-connector-java.version>
        <!--json数据格式处理工具-->
        <fastjson.version>1.2.75</fastjson.version>
    </properties>
    <!--通用依赖-->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!-- json -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector-java.version}</version>
            <scope>runtime</scope>
        </dependency>
        <!-- 集成spring data jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
        </dependency>
    </dependencies>
    <!--编译打包-->
    <build>
        <finalName>${project.name}</finalName>
        <!--资源文件打包-->
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
        <!--插件统一管理-->
        <pluginManagement>
            <plugins>
                <!--maven打包插件-->
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <version>${spring.boot.version}</version>
                    <configuration>
                        <fork>true</fork>
                        <finalName>${project.build.finalName}</finalName>
                    </configuration>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
                <!--编译打包插件-->
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>${maven.plugin.version}</version>
                    <configuration>
                        <source>${java.version}</source>
                        <target>${java.version}</target>
                        <encoding>UTF-8</encoding>
                        <compilerArgs>
                            <arg>-parameters</arg>
                        </compilerArgs>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
    <!--配置Maven项目中需要使用的远程仓库-->
    <repositories>
        <repository>
            <id>aliyun-repos</id>
            <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <!--用来配置maven插件的远程仓库-->
    <pluginRepositories>
        <pluginRepository>
            <id>aliyun-plugin</id>
            <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

3.处理配置application.yml

#服务配置
server:
  #端口
  port: 7002
#spring配置
spring:
  #应用配置
  application:
    #应用名
    name: aurora_hibernate
  #数据源配置
  datasource:
    #驱动
    driver-class-name: com.mysql.cj.jdbc.Driver
    #连接地址
    url: jdbc:mysql://127.0.0.1:3306/aurora?serverTimezone=UTC&characterEncoding=UTF-8&useUnicode=true&useSSL=false&tinyInt1isBit=false&allowPublicKeyRetrieval=true
    #数据库用户
    username: root
    #数据库密码
    password: xiaosongyue.1997
#hibernate配置
  jpa:
    #配置数据库引擎,不配置则默认为myisam引擎
    database-platform: org.hibernate.dialect.MySQL8Dialect
    show-sql: true
    database: mysql
    hibernate:
      #create： 每次加载hibernate时都会删除上一次的生成的表，然后根据你的model类再重新来生成新表，哪怕两次没有任何改变也要这样执行，这就是导致数据库表数据丢失的一个重要原因。
      #create-drop ：每次加载hibernate时根据model类生成表，但是sessionFactory一关闭,表就自动删除。
      #update：最常用的属性，第一次加载hibernate时根据model类会自动建立起表的结构（前提是先建立好数据库），以后加载hibernate时根据 model类自动更新表结构，即使表结构改变了但表中的行仍然存在不会删除以前的行。要注意的是当部署到服务器后，表结构是不会被马上建立起来的，是要等 应用第一次运行起来后才会。
      #validate ：每次加载hibernate时，验证创建数据库表结构，只会和数据库中的表进行比较，不会创建新表，但是会插入新值。
      #none : 什么都不做。
      ddl-auto: none
#日志设置
logging:
  #日志级别
  level:
    springfox: error
    com.example.hibernate: debug

4.创建对应的类

tips：包结构如图

（1）主启动类

package com.aurora;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
 * @author 浅夏的猫
 * @description 主启动类
 * @date 22:46 2024/1/13
 */
@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

（2）实体类

tips：* @Entity注解，表示这是一个JPA实体类* @Table 注解用于指定实体类映射到的数据库表名* @Id注解用于指定实体类的主键* @GeneratedValue 注解指定了主键的生成策略* @Column 注解用于指定实体类属性映射到的数据库列名* @Transient 映射数据表和对象关系时候就不会报在表中不存在该字段* @CreationTimestamp 插入数据时自动更新时间

package com.aurora.entity;
import com.fasterxml.jackson.annotation.JsonFormat;
import org.hibernate.annotations.CreationTimestamp;
import org.hibernate.annotations.UpdateTimestamp;
import javax.persistence.*;
import java.io.Serializable;
import java.util.Date;
/**
 * @author 浅夏的猫
 * @description 资源实体类
 *
 * @Entity注 解，表示这是一个JPA实体类
 * @Table 注解用于指定实体类映射到的数据库表名
 * @Id注 解用于指定实体类的主键
 * @GeneratedValue 注解指定了主键的生成策略
 * @Column 注解用于指定实体类属性映射到的数据库列名
 * @Transient 映射数据表和对象关系时候就不会报在表中不存在该字段
 * @CreationTimestamp 插入数据时自动更新时间
 *
 * @date 22:42 2024/1/13
 */
@Entity
@Table(name = "tianchi_resource")
public class ResourceEntity implements Serializable {
    private static final long serialVersionUID = 1L;
    //资源id
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    //资源名称
    @Column(name = "resource_name")
    private String resourceName;
    //资源路径
    @Column(name = "resource_path")
    private String resourcePath;
    //资源图标
    @Column(name = "resource_icon")
    private String resourceIcon;
    //资源图标颜色
    @Column(name = "resource_icon_color")
    private String resourceIconColor;
    //资源描述
    @Column(name = "resource_describe")
    private String resourceDescribe;
    //资源类型
    @Column(name = "resource_type")
    private String resourceType;
    //资源作者
    @Column(name = "resource_author")
    private String resourceAuthor;
    //资源创建时间
    @Column(name = "create_time")
    @CreationTimestamp
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date createTime;
    //资源更新时间
    @UpdateTimestamp
    @Column(name = "update_time")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date updateTime;
    //查询结束时间
    @Transient
    private Date endTime;
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getResourceName() {
        return resourceName;
    }
    public void setResourceName(String resourceName) {
        this.resourceName = resourceName;
    }
    public String getResourcePath() {
        return resourcePath;
    }
    public void setResourcePath(String resourcePath) {
        this.resourcePath = resourcePath;
    }
    public String getResourceIcon() {
        return resourceIcon;
    }
    public void setResourceIcon(String resourceIcon) {
        this.resourceIcon = resourceIcon;
    }
    public String getResourceIconColor() {
        return resourceIconColor;
    }
    public void setResourceIconColor(String resourceIconColor) {
        this.resourceIconColor = resourceIconColor;
    }
    public String getResourceDescribe() {
        return resourceDescribe;
    }
    public void setResourceDescribe(String resourceDescribe) {
        this.resourceDescribe = resourceDescribe;
    }
    public String getResourceType() {
        return resourceType;
    }
    public void setResourceType(String resourceType) {
        this.resourceType = resourceType;
    }
    public String getResourceAuthor() {
        return resourceAuthor;
    }
    public void setResourceAuthor(String resourceAuthor) {
        this.resourceAuthor = resourceAuthor;
    }
    public Date getCreateTime() {
        return createTime;
    }
    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }
    public Date getUpdateTime() {
        return updateTime;
    }
    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }
    public Date getEndTime() {
        return endTime;
    }
    public void setEndTime(Date endTime) {
        this.endTime = endTime;
    }
    @Override
    public String toString() {
        return "ResourceEntity{" +
                "id=" + id +
                ", resourceName='" + resourceName + '\'' +
                ", resourcePath='" + resourcePath + '\'' +
                ", resourceIcon='" + resourceIcon + '\'' +
                ", resourceIconColor='" + resourceIconColor + '\'' +
                ", resourceDescribe='" + resourceDescribe + '\'' +
                ", resourceType='" + resourceType + '\'' +
                ", resourceAuthor='" + resourceAuthor + '\'' +
                ", createTime=" + createTime +
                ", updateTime=" + updateTime +
                ", endTime=" + endTime +
                '}';
    }
}

（3）创建映射类

package com.aurora.mapper;
import com.aurora.entity.ResourceEntity;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
/**
 * @author 浅夏的猫
 * @description 资源mapper操作类
 * @date 22:45 2024/1/13
 */
@Repository
public interface ResourceMapper extends JpaRepository<ResourceEntity, Long> {
}

（4）创建控制类

package com.aurora.controller;
import com.aurora.entity.ResourceEntity;
import com.aurora.mapper.ResourceMapper;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import java.util.List;
/**
 * @author 浅夏的猫
 * @description 资源controller
 * @date 22:38 2024/1/13
 */
@RestController
@RequestMapping("/resource")
public class ResourceController {
    @Resource
    private ResourceMapper resourceMapper;
    /**
     * @return java.util.List<com.aurora.entity.ResourceEntity>
     * @description 查询全部资源数据列表
     * @author 浅夏的猫
     * @date 22:40 2024/1/13
     */
    @RequestMapping("/list")
    public List<ResourceEntity> list() {
        return resourceMapper.findAll();
    }
}

（5）启动应用，控制台访问

tips：访问地址http://localhost:7002/resource/list

【极光系列】springBoot集成Hibernate