【转】Intellij IDEA 14中使用MyBatis-generator 自动生成MyBatis代码

Intellij IDEA 14 作为Java IDE 神器，接触后发现，非常好用，对它爱不释手，打算离开eclipse和myeclipse，投入Intellij IDEA的怀抱。

然而在使用的过程中会发现Intellij IDEA也有一些不尽如意的地方，难免会有些不爽：Intellij IDEA 的插件库远不及eclipse的丰富。 mybatis-generator在eclipse中有专门的插件，而没有开发出Intellij IDEA能够使用的插件。

不过不用灰心，如果你的项目是使用maven组织的，那么我们可以在Intellij IDEA中使用 mybatis-generator-maven-plugin插件来完成MyBatis model 和Mapper文件的自动生成。

STEP 0.在Intellij IDEA创建maven项目（本过程比较简单，略）

STEP 1. 在maven项目的pom.xml 添加mybatis-generator-maven-plugin 插件

<build>

<finalName>xxx</finalName>

<plugins>

<plugin>

<groupId>org.mybatis.generator</groupId>

<artifactId>mybatis-generator-maven-plugin</artifactId>

<version>1.3.2</version>

<configuration>

<verbose>true</verbose>

<overwrite>true</overwrite>

</configuration>

</plugin>

</plugins>

</build>

STEP 2. 在maven项目下的src/main/resources 目录下建立名为 generatorConfig.xml的配置文件，作为mybatis-generator-maven-plugin 插件的执行目标，模板如下：

<?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="generator.properties"></properties>



<classPathEntry location="${jdbc.driverLocation}"/>

<context id="default" targetRuntime="MyBatis3">



<commentGenerator>

<property name="suppressDate" value="true" />

</commentGenerator>



<jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}">

</jdbcConnection>



<javaTypeResolver >

<property name="forceBigDecimals" value="false" />

</javaTypeResolver>



<javaModelGenerator targetPackage="org.louis.hometutor.po" targetProject="src/main/java">



<property name="constructorBased" value="true"/>



<property name="enableSubPackages" value="false"/>



<property name="immutable" value="true"/>



<property name="rootClass" value="com.foo.louis.Hello"/>



<property name="trimStrings" value="true"/>

</javaModelGenerator>



<sqlMapGenerator targetPackage="org.louis.hometutor.domain" targetProject="src/main/java">

<property name="enableSubPackages" value="false"/>

</sqlMapGenerator>



<javaClientGenerator targetPackage="com.foo.tourist.dao" targetProject="src/main/java" type="MIXEDMAPPER">

<property name="enableSubPackages" value=""/>



<property name="exampleMethodVisibility" value=""/>



<property name="methodNameCalculator" value=""/>



<property name="rootInterface" value=""/>

</javaClientGenerator>

<table tableName="lession" schema="louis">



<generatedKey column="" sqlStatement="" identity="" type=""/>



<columnRenamingRule searchString="" replaceString=""/>



<ignoreColumn column="PLAN_ID"  delimitedColumnName="true" />



<columnOverride column="" javaType=""    jdbcType="" typeHandler=""  delimitedColumnName="" />

</table>

</context>

</generatorConfiguration>

这里使用了外置的配置文件generator.properties，可以将一下属性配置到properties文件之中，增加配置的灵活性：

jdbc.driverLocation=D:\\maven\\com\\oracle\\ojdbc14\\10.2.0.4.0\\ojdbc14-10.2.0.4.0.jar

jdbc.driverClass=oracle.jdbc.driver.OracleDriver

jdbc.connectionURL=jdbc:oracle:thin:@//localhost:1521/XE

jdbc.userId=LOUIS

jdbc.password=123456

项目目录如下：

STEP 3. 在Intellij IDEA添加一个“Run运行”选项，使用maven运行mybatis-generator-maven-plugin插件：

之后弹出运行配置框，为当前配置配置一个名称，这里其名为"generator",然后在 “Command line” 选项中输入“mybatis-generator:generate -e”

这里加了“-e ”选项是为了让该插件输出详细信息，这样可以帮助我们定位问题。

如果添加成功，则会在run 选项中有“generator” 选项，如下：

点击运行，然后不出意外的话，会在控制台输出：

C:\Java\jdk1.7.0_71\bin\java -Dmaven.home=D:\software\apache-maven-3.0.5-bin -Dclassworlds.conf=D:\software\apache-maven-3.0.5-bin\bin\m2.conf -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:\applications\JetBrains\IntelliJ IDEA 14.0.2\bin" -Dfile.encoding=UTF-8 -classpath "D:\software\apache-maven-3.0.5-bin\boot\plexus-classworlds-2.4.jar;D:\applications\JetBrains\IntelliJ IDEA 14.0.2\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain org.codehaus.classworlds.Launcher -Didea.version=14.0.2 -s D:\software\apache-maven-3.0.5-bin\conf\settings.xml mybatis-generator:generate -e

[INFO] Error stacktraces are turned on.

[INFO] Scanning for projects...

[INFO]

[INFO] ------------------------------------------------------------------------

[INFO] Building hometutor Maven Webapp 1.0-SNAPSHOT

[INFO] ------------------------------------------------------------------------

[INFO]

[INFO] --- mybatis-generator-maven-plugin:1.3.2:generate (default-cli) @ hometutor ---

[INFO] Connecting to the Database

[INFO] Introspecting table louis.lession

log4j:WARN No appenders could be found for logger (org.mybatis.generator.internal.db.DatabaseIntrospector).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

[INFO] Generating Example class for table LOUIS.LESSION

[INFO] Generating Record class for table LOUIS.LESSION

[INFO] Generating Mapper Interface for table LOUIS.LESSION

[INFO] Generating SQL Map for table LOUIS.LESSION

[INFO] Saving file LessionMapper.xml

[INFO] Saving file LessionExample.java

[INFO] Saving file Lession.java

[INFO] Saving file LessionMapper.java

[WARNING] Root class com.foo.louis.Hello cannot be loaded, checking for member overrides is disabled for this class

[WARNING] Existing file E:\sources\tutor\src\main\java\org\louis\hometutor\po\Lession.java was overwritten

[WARNING] Existing file E:\sources\tutor\src\main\java\com\foo\tourist\dao\LessionMapper.java was overwritten

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 2.334s

[INFO] Finished at: Tue Jan 27 12:04:08 CST 2015

[INFO] Final Memory: 8M/107M

[INFO] ------------------------------------------------------------------------

Process finished with exit code 0

好，看到BUILD SUCCESS，则大功告成，如果有错误的话，由于添加了-e 选项，会把具体的详细错误信息打印出来的，根据错误信息修改即可