【极光系列】SpringBoot集成Mybatis
一.gitee地址
浅夏的猫 @shawsongyue
直接下载可用 https://gitee.com/shawsongyue/aurora.git
二.mysql安装教程
详细参考我的另外一遍博客
三.集成mybatis步骤
1. 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_mybatis</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> <!--mybatis--> <mybatis.version>3.5.3</mybatis.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MyBatis --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.1.2</version> </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>
2. 处理数据库表
登录mysql数据库,创建表 tianchi_resource,并插入数据
CREATE TABLE `tianchi_resource` ( `id` bigint NOT NULL 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 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci; -- 插入数据验证 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 (1, 'colorUI资源包', 'http://baidu.com', 'url(https://ossweb-img.qq.com/images/lol/web201310/skin/big10001.jpg)', NULL, 'uniapp的ui页面资源包,免费提供,uniapp的ui页面资源包,免费提供,uniapp的ui页面资源包,免费提供', '浅夏的猫', NULL, '2024-01-06 00:50:33', '2024-01-07 23:56:58');
3. 处理配置application.yml
#服务配置 server: #端口 port: 7001 #spring配置 spring: #应用配置 application: #应用名 name: aurora_mybatis #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: yourpassword #mybatis配置 mybatis: #mapper.xml文件扫描路径 mapper-locations: classpath*:mapper/*Mapper.xml #实体类扫描路径,配置这个以后mapper,xml里面写的实体类不需要全路径 type-aliases-package: com.aurora.entity #mybatis拓展配置 configuration: #设置下划线自动转换为大写字母 map-underscore-to-camel-case: true
4.创建对应的类
(1)主启动类
tips:Application.class 类 springboot程序启动必备
package com.aurora; import org.mybatis.spring.annotation.MapperScan; 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 @MapperScan("com.aurora.mapper") public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
(2)实体类
tips:ResourceEntity.class 类 创建与数据库表对应的实体类,后续映射需要使用
package com.aurora.entity; import com.fasterxml.jackson.annotation.JsonFormat; import java.io.Serializable; import java.util.Date; /** * @author 浅夏的猫 * @description 资源实体类 * @date 22:42 2024/1/13 */ public class ResourceEntity implements Serializable { private static final long serialVersionUID = 1L; //资源id private Long id; //资源名称 private String resourceName; //资源路径 private String resourcePath; //资源图标 private String resourceIcon; //资源图标颜色 private String resourceIconColor; //资源描述 private String resourceDescribe; //资源类型 private String resourceType; //资源作者 private String resourceAuthor; //资源创建时间 @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8") private Date createTime; //资源更新时间 @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8") private Date updateTime; //查询结束时间 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
tips:映射类主要用于编写操作sql的接口方法
package com.aurora.mapper; import com.aurora.entity.ResourceEntity; import org.apache.ibatis.annotations.Mapper; import java.util.List; /** * @author 浅夏的猫 * @description 资源mapper操作类 * @date 22:45 2024/1/13 */ @Mapper public interface ResourceMapper { /** * @return java.util.List<com.aurora.entity.ResourceEntity> * @description * @author 浅夏的猫 * @datetime 23:19 2024/1/13 */ List<ResourceEntity> list(); }
(4)创建sql映射文件
tips: 每一个映射类对应一个mapper映射文件,在resources的mapper包下写映射文件
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.aurora.mapper.ResourceMapper"> <select id="list" resultType="ResourceEntity"> select * from tianchi_resource </select> </mapper>
(5)创建控制类
tips: 控制类用于浏览器或前端访问使用
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.list(); } }
(5)启动应用,控制台访问
tips: 访问地址http://localhost:7001/resource/list