SpringBoot整合mybatis-generator-maven-plugin的方法
前言:
SpringBoot版本 : 2.2.6
mybatis-generator-maven-plugin版本: 1.4.0
plugin 使用 mysql版本: 5.1.47
本次主要记录日和使用该插件自动生成pojo mapper xml文件(单表)
1 创建SpringBoot工程
这里不做具体记录,创建工程往常教程很多,
下面贴出重要文件和注意事项
1.1 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>show.mrkay</groupId> <artifactId>boot-mybatis-generator</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.6.RELEASE</version> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <!--springboot--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <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> </dependency> <!--mysql--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.9</version> </dependency> <!--mybatis--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.1.0</version> </dependency> <!--日志--> <!--因为是基于AOP实现的所以这里必须要调入aop--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <!--门面--> <dependency> <groupId>org.slf4j</groupId> <artifactId>jcl-over-slf4j</artifactId> </dependency> <!--log4j12--> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> </dependency> </dependencies> <build> <!--插件--> <plugins> <!--springboot的maven插件--> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.4.0</version> <!--插件设置--> <configuration> <!--允许移动生成的文件--> <verbose>true</verbose> <!--启用覆盖--> <overwrite>true</overwrite> <!--自动生成配置 如果名字是generatorConfig.xml可以省略配置--> <!--<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>--> </configuration> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> </dependencies> </plugin> </plugins> </build> </project>
1.2 application.yml
server: port: 8080 spring: datasource: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/generaltor?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT username: root password: lk0313 druid: db-type: com.alibaba.druid.pool.DruidDataSource # 下面不配置就是采用默认配置 # filters: stat # maxActive: 20 # initialSize: 1 # maxWait: 60000 # minIdle: 1 # timeBetweenEvictionRunsMillis: 60000 # minEvictableIdleTimeMillis: 300000 # validationQuery: select 'x' # testWhileIdle: true # testOnBorrow: false # testOnReturn: false # poolPreparedStatements: true # maxOpenPreparedStatements: 20 mybatis: # 该配置项配置了MyBatis配置文件保存路径 mapper-locations: classpath*:show/makey/dao/*.xml # 配置扫描对应实体所在包,将mapper的实现类注入容器我们在启动器类上加了@MapperScan注解这里就不需要了 logging: file: path: /logs # type-aliases-package: show.mrkay.dao
1.3 generatorConfig.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <!-- 是否生成注释代时间戳--> <property name="suppressDate" value="true"/> <!-- 是否去除自动生成的注释 true:是 : false:否 --> <property name="suppressAllComments" value="true"/> </commentGenerator> <!--数据库链接地址账号密码--> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/generaltor?serverTimezone=Asia/Shanghai" userId="root" password="lk0313"> </jdbcConnection> <javaTypeResolver> <!--该属性可以控制是否强制DECIMAL和NUMERIC类型的字段转换为Java类型的java.math.BigDecimal,默认值为false,一般不需要配置。--> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!--生成Model类存放位置--> <javaModelGenerator targetPackage="show.mrkay.pojo" targetProject="src/main/java"> <!--enableSubPackages:如果true,MBG会根据catalog和schema来生成子包。如果false就会直接用targetPackage属性。默认为false。--> <property name="enableSubPackages" value="true"/> <!--trimStrings:是否对数据库查询结果进行trim操作,如果设置为true就会生成类似这样public void setUsername(String username) {this.username = username == null ? null : username.trim();}的setter方法。默认值为false。--> <property name="trimStrings" value="true"/> </javaModelGenerator> <!--生成映射xml文件存放位置--> <sqlMapGenerator targetPackage="show.mrkay.dao" targetProject="src/main/resources/"> <property name="enableSubPackages" value="true"/> </sqlMapGenerator> <!--生成Dao类存放位置(*Mapper.java)--> <!-- 客户端代码,生成易于使用的针对Model对象和XML配置文件 的代码 type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 --> <javaClientGenerator type="XMLMAPPER" targetPackage="show.mrkay.dao" targetProject="src/main/java"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <!--生成对应表及类名--> <table tableName="student" domainObjectName="Student" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"> <!--useActualColumnNames:如果设置为true,那么MBG会使用从数据库元数据获取的列名作为生成的实体对象的属性。 如果为false(默认值),MGB将会尝试将返回的名称转换为驼峰形式。 在这两种情况下,可以通过 元素显示指定,在这种情况下将会忽略这个(useActualColumnNames)属性。--> <property name="useActualColumnNames" value="true"/> <!-- 数据库表主键 --> <generatedKey column="id" sqlStatement="Mysql" identity="true" /> </table> </context> </generatorConfiguration>
步骤:
1 导入依赖
2 创建*generaltorConfig.xml配置文件
3 配置yml配置文件
注意:
pom中generalto-maven-plugs中必须指定mysql驱动,并且明确版本
generaltorConfig.xml中的
标签中需要指定tableName和生成的实体名字
2 创建数据库表
-- 建表语句: /* SQLyog Enterprise v12.09 (64 bit) MySQL - 5.5.40 : Database - generaltor ********************************************************************* */ /*!40101 SET NAMES utf8 */; /*!40101 SET SQL_MODE=''*/; /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */; /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */; CREATE DATABASE /*!32312 IF NOT EXISTS*/`generaltor` /*!40100 DEFAULT CHARACTER SET utf8 */; /*Table structure for table `student` */ DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `id` int(32) NOT NULL AUTO_INCREMENT, `name` varchar(15) DEFAULT NULL, `sex` varchar(2) DEFAULT NULL, `phone` int(15) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8; /*Data for the table `student` */ insert into `student`(`id`,`name`,`sex`,`phone`) values (1,'lk','男',12345578); /*!40101 SET SQL_MODE=@OLD_SQL_MODE */; /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */; /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */; /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
3 运行
如果使用IDEA 我们只需要找到右边侧栏中的maven(没有记得调出了)
找到plugins–>mybatis-generaltor–>mybatis-generaltor:generaltor 之后双击即可,此时刷新一下项目就自动生成我们想要的,mapper和xml以及pojo
4 测试
创建穿点controller和service 来完成一次测试,
package show.mrkay.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.Mapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.support.JstlUtils; import show.mrkay.dao.StudentMapper; import show.mrkay.pojo.Student; import show.mrkay.service.UserService; import java.util.List; /** * @ClassName: UserController * @description: 用户Controller * @Author: MrKay * @Date: 2020/11/8 */ @RestController @RequestMapping("/user") public class UserController { @Autowired private UserService userService; @GetMapping("/alllist") public List<Student> selectAll(){ return userService.selectAll(); } }
package show.mrkay.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import show.mrkay.dao.StudentMapper; import show.mrkay.pojo.Student; import java.util.List; /** * @ClassName: UserService * @description: UserService * @Author: MrKay * @Date: 2020/11/8 */ @Service public class UserService { @Autowired private StudentMapper studentMapper; public List<Student> selectAll(){ List<Student> students = studentMapper.selectAll(); return students; } }
package show.mrkay; import org.mybatis.spring.annotation.MapperScan; import org.mybatis.spring.annotation.MapperScans; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan("show.mrkay.dao") public class GeneratorApplication { public static void main(String[] args) { SpringApplication.run(GeneratorApplication.class, args); } }
注意:
启动器类中需要加入@MapperScan(“mapper接口所在包”)注解,这样我们就不需要手动创建实现类了,mybatis会自动帮我们创建
启动之后:
地址栏输入 localhost:8080/user/alllist
得到查询结果:
[{"id":1,"name":"lk","sex":"男","phone":12345578}]
5 完整代码
https://gitee.com/mrkay0313/boot-mybatis-generaltor.git
6 总结
便于自己以后使用,做的一个demo
到此这篇关于SpringBoot整合mybatis-generator-maven-plugin的文章就介绍到这了,更多相关SpringBoot整合mybatis-generator-maven-plugin内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!