Spring CLoud 整合通用Mapper+Lombok+Mysql

文章目錄

• 一、使用Spring Initializr快速創建Spring Boot應用
• 二、相關依賴
• • 2.1. 添加依賴
  • 2.2. mybatis添加插件
  • 2.3. 在resources目錄下面創建generator目錄存放generatorConfig.xml
  • • 2.3.1. config.properties配置文件
    • 2.3.2. lombok插件
    • 2.3.3. 數據庫信息
    • 2.3.4. 代碼生成實體類、mapper接口和mapper.xml
    • 2.3.5. 指定生成那些表
  • 2.4. config.properties配置文件
  • 2.4.1. 數據庫信息
  • 2.4.2. 模塊名稱
  • 2.4.3. 表名
  • 2.5. 配置SpringBoot配置文件
  • • 2.6. 運行數據庫腳本
    • 2.7. 雙擊運行：
• 三、代碼生成效果
• • 3.1. 實體類效果：
  • 3.2. mapper接口效果：
  • 3.3. mapper映射文件效果：
• 四、啟動類添加注解
• 五、單元測試
• 六、發布一個list端點，進行web服務調用
• • 6.2. 調用服務截圖

一、使用Spring Initializr快速創建Spring Boot應用

也可以都不選


創建項目完成！！！

二、相關依賴

2.1. 添加依賴

<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--通用mapper--><dependency><groupId>tk.mybatis</groupId><artifactId>mapper-spring-boot-starter</artifactId><version>2.1.5</version></dependency><!--Lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.8</version><scope>provided</scope></dependency><!-- mysql 驅動--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><!-- 單元測試--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>

2.2. mybatis添加插件

<plugin><groupId>org.mybatis.generator</groupId><artifactId>mybatis-generator-maven-plugin</artifactId><version>1.3.6</version><configuration><configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile><overwrite>true</overwrite><verbose>true</verbose></configuration><dependencies><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.16</version></dependency><!-- https://mvnrepository.com/artifact/tk.mybatis/mapper --><dependency><groupId>tk.mybatis</groupId><artifactId>mapper</artifactId><version>4.1.5</version></dependency></dependencies></plugin>

2.3. 在resources目錄下面創建generator目錄存放generatorConfig.xml

• 涉及以下5部分：

2.3.1. config.properties配置文件

2.3.2. lombok插件

2.3.3. 數據庫信息

2.3.4. 代碼生成實體類、mapper接口和mapper.xml

2.3.5. 指定生成那些表

generatorConfig.xml文件內容如下：

<!DOCTYPE generatorConfigurationPUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"><generatorConfiguration><properties resource="generator/config.properties"/><context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat"><property name="beginningDelimiter" value="`"/><property name="endingDelimiter" value="`"/><plugin type="tk.mybatis.mapper.generator.MapperPlugin"><property name="mappers" value="tk.mybatis.mapper.common.Mapper"/><property name="caseSensitive" value="true"/><property name="lombok" value="Getter,Setter,ToString"/></plugin><jdbcConnection driverClass="${jdbc.driverClass}"connectionURL="${jdbc.url}"userId="${jdbc.user}"password="${jdbc.password}"></jdbcConnection><!--實體--><javaModelGenerator targetPackage="com.gblfy.springboot.mapper.lombok.mysql.domain.entity.${moduleName}"targetProject="src/main/java"/><!--mapper.xml--><sqlMapGenerator targetPackage="com.gblfy.springboot.mapper.lombok.mysql.dao.${moduleName}"targetProject="src/main/resources"/><!--mapper接口--><javaClientGenerator targetPackage="com.gblfy.springboot.mapper.lombok.mysql.dao.${moduleName}"targetProject="src/main/java"type="XMLMAPPER"/><!--為哪張表生成代碼--><table tableName="${tableName}"><generatedKey column="id" sqlStatement="JDBC"/></table></context> </generatorConfiguration>

2.4. config.properties配置文件

涉及部分：

2.4.1. 數據庫信息

2.4.2. 模塊名稱

2.4.3. 表名

具體內容：

jdbc.driverClass=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/mapperlombok?nullCatalogMeansCurrent=true jdbc.user=root jdbc.password=root#模塊名稱 moduleName=content#表名 tableName=user

2.5. 配置SpringBoot配置文件

#數據庫信息 spring:datasource:url: jdbc:mysql://localhost:3306/mapperlombokdriver-class-name: com.mysql.cj.jdbc.Driverusername: rootpassword: root # 應用名稱application:name: content-center # 應用啟動端口 server:port: 8080

2.6. 運行數據庫腳本

CREATE TABLE `user` (`user_id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主鍵id',`account` varchar(45) COLLATE utf8_bin DEFAULT NULL COMMENT '賬號',`password` varchar(45) COLLATE utf8_bin DEFAULT NULL COMMENT '密碼',`create_time` datetime DEFAULT NULL COMMENT '創建時間',`update_time` datetime DEFAULT NULL COMMENT '更新時間',PRIMARY KEY (`user_id`) ) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8 COLLATE=utf8_bin ROW_FORMAT=DYNAMIC COMMENT='用戶表';

2.7. 雙擊運行：

三、代碼生成效果

3.1. 實體類效果：

package com.gblfy.springboot.mapper.lombok.mysql.domain.entity.content;import lombok.AllArgsConstructor; import lombok.Builder; import lombok.Data; import lombok.NoArgsConstructor;import javax.persistence.Column; import javax.persistence.Id; import javax.persistence.Table; import java.util.Date;@Data @NoArgsConstructor @AllArgsConstructor @Builder @Table(name = "user") public class User {/*** 主鍵id*/@Id@Column(name = "user_id")private Long userId;/*** 賬號*/private String account;/*** 密碼*/private String password;/*** 創建時間*/@Column(name = "create_time")private Date createTime;/*** 更新時間*/@Column(name = "update_time")private Date updateTime; }

3.2. mapper接口效果：

package com.gblfy.springboot.mapper.lombok.mysql.dao.content;import com.gblfy.springboot.mapper.lombok.mysql.domain.entity.content.Order; import tk.mybatis.mapper.common.Mapper;public interface UserMapper extends Mapper<User> { }

3.3. mapper映射文件效果：

<?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.gblfy.springboot.mapper.lombok.mysql.dao.content.UserMapper"><resultMap id="BaseResultMap" type="com.gblfy.springboot.mapper.lombok.mysql.domain.entity.content.User"><!--WARNING - @mbg.generated--><id column="user_id" jdbcType="BIGINT" property="userId" /><result column="account" jdbcType="VARCHAR" property="account" /><result column="password" jdbcType="VARCHAR" property="password" /><result column="create_time" jdbcType="TIMESTAMP" property="createTime" /><result column="update_time" jdbcType="TIMESTAMP" property="updateTime" /></resultMap> </mapper>

四、啟動類添加注解

– 不然spring掃描不到，無法將mapper進行實例化，導致mapper接口無法注入

@SpringBootApplication @MapperScan("com.gblfy.springboot.mapper.lombok.mysql") public class SpringbootMapperLombokMysqlApplication {public static void main(String[] args) {SpringApplication.run(SpringbootMapperLombokMysqlApplication.class, args);} }

五、單元測試

package com.gblfy.springboot.mapper.lombok.mysql.dao.content;import com.gblfy.springboot.mapper.lombok.mysql.SpringbootMapperLombokMysqlApplicationTests; import com.gblfy.springboot.mapper.lombok.mysql.domain.entity.content.User; import lombok.extern.slf4j.Slf4j; import org.junit.Assert; import org.junit.Test; import org.springframework.stereotype.Component;import javax.annotation.Resource; import java.util.Date; import java.util.List;@Component @Slf4j public class SysUserMapperTest extends SpringbootMapperLombokMysqlApplicationTests {@Resourceprivate UserMapper userMapper;/*** 插入數據并查詢用戶列表*/@Testpublic void insertAndSelect() {//插入用戶數據User user = User.builder().account("gblfy").password("123").createTime(new Date()).updateTime(new Date()).build();int i = this.userMapper.insertSelective(user);//查詢用戶列表List<User> userList = this.userMapper.selectAll();//斷言數據庫數據條數為1條,如不是1條則，控制臺異常提示Assert.assertEquals(1, userList.size());//循環遍歷用戶列表for (User u : userList) {log.info("用戶列表信息={}", u.toString());}} }

六、發布一個list端點，進行web服務調用

package com.gblfy.springboot.mapper.lombok.mysql.controller.content;import com.gblfy.springboot.mapper.lombok.mysql.dao.content.UserMapper; import com.gblfy.springboot.mapper.lombok.mysql.domain.entity.content.User; import lombok.RequiredArgsConstructor; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;import java.util.Date; import java.util.List;/*** @author gblfy* @ClassNme UserController* @Description TODO* @Date 2019/7/7 19:09* @version1.0*/ @Slf4j @RestController @RequestMapping("/user") @RequiredArgsConstructor(onConstructor = @__(@Autowired)) public class UserController {private final UserMapper userMapper;@RequestMapping("/list")public List<User> insertAndSelect() {//插入用戶數據User user = User.builder().account("gblfy").password("123").createTime(new Date()).updateTime(new Date()).build();int i = this.userMapper.insertSelective(user);log.info("插入用戶信息成功={}", i);//查詢用戶列表List<User> userList = this.userMapper.selectAll();log.info("查詢用戶列表信息成功");return userList;} }

6.2. 調用服務截圖

調用服務地址：http://localhost:8080/user/list

本文下載鏈接：

Github地址：https://github.com/gb-heima/springboot-mapper-lombok-mysql
zip包下載鏈接：
https://codeload.github.com/gb-heima/springboot-mapper-lombok-mysql/zip/master

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