【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
