关于maven中mybatis-generator的使用

之前生成mybatis对应的entity、dao、dao.xml啊都是自己写了一套gui工具生成的。感觉还挺好用的。就是通用性不是很强 = =!

今儿偶尔发现原来官方有生成工具，还挺强大的（可惜没有gui啊）。果断试用下（只试验在maven下的使用）。

ps：参考的官网

操作步骤

在pom.xml中添加MBG的插件配置

<!--mybatis-generator-->
<plugin>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-maven-plugin</artifactId>
    <version>1.3.0</version>
    <configuration>
        <!--配置文件路径-->
        <configurationFile>${basedir}/src/main/resources/mybatis/generatorConfig.xml</configurationFile>
        <!--打印日志-->
        <verbose>true</verbose>
        <!--覆盖存在的文件-->
        <overwrite>true</overwrite>
    </configuration>
</plugin>

添加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>

    <!-- Class Driver Path -->
    <classPathEntry
            location="/xxx/mysql-connector-java-5.1.35.jar"/>

    <context id="context" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- This property is used to specify whether MBG will include any coments in the generated code -->
            <property name="suppressAllComments" value="false"/>
            <!-- This property is used to specify whether MBG will include the generation timestamp in the generated comments -->
            <property name="suppressDate" value="true"/>
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&amp;characterEncoding=UTF-8"
                        userId="test" password="123456"/>

        <javaTypeResolver>
            <!-- This property is used to specify whether MyBatis Generator should force the use of java.math.BigDecimal
      for DECIMAL and NUMERIC fields, rather than substituting integral types when possible -->
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>

        <javaModelGenerator targetPackage="com.xkeshi.entities" targetProject="src/main/java">
            <!-- This property is used to select whether MyBatis Generator will generate different Java packages for
      the objects based on the catalog and schema of the introspected table -->
            <property name="enableSubPackages" value="false"/>
            <!-- This property is used to select whether MyBatis Generator adds code to trim the white space from character fields returned from the database -->
            <property name="trimStrings" value="false"/>
            <!-- 是否对model添加 构造函数 -->
            <property name="constructorBased" value="true"/>
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="com.xkeshi.dao" targetProject="src/main/resources">
            <!-- This property is used to select whether MyBatis Generator will generate different Java packages for
      the objects based on the catalog and schema of the introspected table -->
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>

        <javaClientGenerator targetPackage="com.xkeshi.dao" targetProject="src/main/java" type="XMLMAPPER">
            <!-- This property is used to select whether MyBatis Generator will generate different Java packages for
      the objects based on the catalog and schema of the introspected table -->
            <property name="enableSubPackages" value="false"/>
        </javaClientGenerator>

        <table tableName="account" enableCountByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false"
               enableUpdateByExample="false">
            <!--insert时id设置-->
            <generatedKey column="id" sqlStatement="MySql" identity="true" type="pre"/>
        </table>
    </context>
</generatorConfiguration>

输入命令运行

$ mvn mybatis-generator:generate -e

这里-e参数是为了输出错误信息，方便排查问题。
看到“BUILD SUCCESS”表示成功生成了~