maven插件利器mybatis-generator-maven-plugin自动生成tk.mybatis代码

使用maven插件mybatis-generator-maven-plugin自动生成代码，节省很多开发时间。首先在pom文件中引入如下插件:

<plugin>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-maven-plugin</artifactId>
    <version>1.3.2</version>
    <!-- 配置文件及相关配置 -->
    <configuration>
        <configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
        <overwrite>true</overwrite>
        <verbose>true</verbose>
    </configuration>
    <dependencies>
        <!-- 引入数据库连接依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <!-- 此处是基于tk.mybatis的mapper生成，所以引入依赖 -->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-generator</artifactId>
            <version>1.0.0</version>
        </dependency>
    </dependencies>
</plugin>

在src/main/resources/generator目录下添加generatorConfig.xml，内容如下：

<?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>
    <properties resource="application.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="cn.lovecto.mybatis.mapper.LoveCtoMapper"/>
        </plugin>
        <!-- 数据库连接配置-->
        <jdbcConnection driverClass="${spring.datasource.druid.driver-class-name}"
                        connectionURL="${spring.datasource.druid.url}"
                        userId="${spring.datasource.druid.username}"
                        password="${spring.datasource.druid.password}">
        </jdbcConnection>
        <!-- 生成模型的位置-->
        <javaModelGenerator targetPackage="cn.lovecto.mybatis.model" targetProject="src/main/java"/>
        <!-- 生成xml的位置 -->
        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>
        <!-- 生成接口的位置 -->
        <javaClientGenerator targetPackage="cn.lovecto.mybatis.dao.mapper" targetProject="src/main/java" type="XMLMAPPER"/>
        <!-- 需要生成的表,要生成多少就写多少 -->
        <table tableName="country">
            <generatedKey column="Id" sqlStatement="Mysql" identity="true"/>
        </table>
    </context>
</generatorConfiguration>

generatorConfig.xml配置文件中需要的几项配置是配置在application.properties中的：

spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.druid.url=jdbc:mysql://172.17.0.2:3306/test
spring.datasource.druid.username=root
spring.datasource.druid.password=xxxxxxxxx

数据库表创建好后，右键generatorConfig.xml，Run As -> Run Configuration ->Maven build->New；选中所在的项目，在Goals中输入“mybatis-generator:generate”，再Run，即可生成代码：

生成代码如下：