【Mybatis】MyBatis Generator插件自动生成代码
本文目录
- 第一步：创建mybatis maven工程
- 第二步：完善功能目录
- 第三步：generatorConfig.xml
- 第四步:运行
使用MyBatis Generator插件能自动生成MyBatis开发所需的Dao、实体类和映射文件，提高开发效率，使用过程如下：
第一步：创建mybatis maven工程
参考【Mybatis】Mybatis开发入门程序创建一个maven工程。
在pom.xml的添加dependencies节点下添加
<dependency>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-coreartifactId>
<version>1.4.0version>
dependency>
在pom.xml的添加plugins节点下添加
<plugin>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-maven-pluginartifactId>
<version>1.4.0version>
<configuration>
<configurationFile>src/main/resources/generatorConfig.xmlconfigurationFile>
<verbose>trueverbose>
<overwrite>trueoverwrite>
configuration>
<executions>
<execution>
<id>Generate MyBatis Artifactsid>
<goals>
<goal>generategoal>
goals>
execution>
executions>
<dependencies>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.20version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.6version>
dependency>
<dependency>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-coreartifactId>
<version>1.4.0version>
dependency>
dependencies>
plugin>
完整的pom.xml文件如下：
<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>4.0.0modelVersion>
<groupId>com.lucasgroupId>
<artifactId>generatorartifactId>
<version>1.0-SNAPSHOTversion>
<name>generatorname>
<url>http://www.example.comurl>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.7maven.compiler.source>
<maven.compiler.target>1.7maven.compiler.target>
properties>
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.11version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.6version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.20version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.12version>
dependency>
<dependency>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-coreartifactId>
<version>1.4.0version>
dependency>
dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-pluginartifactId>
<version>3.1.0version>
plugin>
<plugin>
<artifactId>maven-resources-pluginartifactId>
<version>3.0.2version>
plugin>
<plugin>
<artifactId>maven-compiler-pluginartifactId>
<version>3.8.0version>
plugin>
<plugin>
<artifactId>maven-surefire-pluginartifactId>
<version>2.22.1version>
plugin>
<plugin>
<artifactId>maven-jar-pluginartifactId>
<version>3.0.2version>
plugin>
<plugin>
<artifactId>maven-install-pluginartifactId>
<version>2.5.2version>
plugin>
<plugin>
<artifactId>maven-deploy-pluginartifactId>
<version>2.8.2version>
plugin>
<plugin>
<artifactId>maven-site-pluginartifactId>
<version>3.7.1version>
plugin>
<plugin>
<artifactId>maven-project-info-reports-pluginartifactId>
<version>3.0.0version>
plugin>
<plugin>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-maven-pluginartifactId>
<version>1.4.0version>
<configuration>
<configurationFile>src/main/resources/generatorConfig.xmlconfigurationFile>
<verbose>trueverbose>
<overwrite>trueoverwrite>
configuration>
<executions>
<execution>
<id>Generate MyBatis Artifactsid>
<goals>
<goal>generategoal>
goals>
execution>
executions>
<dependencies>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.20version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.6version>
dependency>
<dependency>
<groupId>org.mybatis.generatorgroupId>
<artifactId>mybatis-generator-coreartifactId>
<version>1.4.0version>
dependency>
dependencies>
plugin>
plugins>
pluginManagement>
build>
project>
第二步：完善功能目录
将工程目录和相应文件夹补充完整如下图所示
第三步：generatorConfig.xml
在resources文件夹下创建generatorConfig.xml并添加如下配置：
<generatorConfiguration>
<context id="context" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
commentGenerator>
<jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/spring?characterEncoding=utf8&useSSL=false&serverTimezone=UTC"
userId="root"
password="123456">
jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
javaTypeResolver>
<javaModelGenerator targetPackage="com.lucas.model" targetProject="src/main/java">
<property name="enableSubPackages" value="false"/>
<property name="trimStrings" value="false"/>
javaModelGenerator>
<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
<property name="enableSubPackages" value="false"/>
sqlMapGenerator>
<javaClientGenerator type="MIXEDMAPPER" targetPackage="com.lucas.dao" targetProject="src/main/java">
<property name="enableSubPackages" value="false"/>
javaClientGenerator>
<table tableName="user" domainObjectName="User"
enableCountByExample="false"
enableUpdateByExample="false"
enableDeleteByExample="false"
enableSelectByExample="false"
selectByExampleQueryId="false">
table>
context>
generatorConfiguration>
第四步:运行
点击Edit Configurations
添加一个maven配置
在Comand line中添加mybatis-generator:generate -e -X 并点击Apply
运行maven
执行成功并生成了相应的文件
