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

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>

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>
    <!--导入属性配置 -->
    <properties resource="generator.properties"></properties>

    <!--指定特定数据库的jdbc驱动jar包的位置 -->
    <classPathEntry location="${jdbc.driverLocation}"/>

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


        <!-- optional，旨在创建class时，对注释进行控制 -->
        <commentGenerator>
            <property name="suppressDate" value="true" />
        </commentGenerator>


        <!--jdbc的数据库连接 -->
        <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}">
        </jdbcConnection>



        <!-- 非必需，类型处理器，在数据库类型和java类型之间的转换控制-->
        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- Model模型生成器,用来生成含有主键key的类，记录类 以及查询Example类
            targetPackage     指定生成的model生成所在的包名
            targetProject     指定在该项目下所在的路径
        -->
        <javaModelGenerator targetPackage="org.louis.hometutor.po" targetProject="src/main/java">
            <!-- 是否对model添加 构造函数 -->
            <property name="constructorBased" value="true"/>

            <!-- 是否允许子包，即targetPackage.schemaName.tableName -->
            <property name="enableSubPackages" value="false"/>

            <!-- 建立的Model对象是否 不可改变  即生成的Model对象不会有 setter方法，只有构造方法 -->
            <property name="immutable" value="true"/>

            <!-- 给Model添加一个父类 -->
            <property name="rootClass" value="com.foo.louis.Hello"/>

            <!-- 是否对类CHAR类型的列的数据进行trim操作 -->
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>

        <!--Mapper映射文件生成所在的目录 为每一个数据库的表生成对应的SqlMap文件 -->
        <sqlMapGenerator targetPackage="org.louis.hometutor.domain" targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>


        <!-- 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 targetPackage="com.foo.tourist.dao" targetProject="src/main/java" type="MIXEDMAPPER">
            <property name="enableSubPackages" value=""/>
            <!--
                    定义Maper.java 源代码中的ByExample() 方法的可视性，可选的值有：
                    public;
                    private;
                    protected;
                    default
                    注意：如果 targetRuntime="MyBatis3",此参数被忽略
             -->
            <property name="exampleMethodVisibility" value=""/>
            <!--
                                           方法名计数器
              Important note: this property is ignored if the target runtime is MyBatis3.
             -->
            <property name="methodNameCalculator" value=""/>

            <!--
                                                为生成的接口添加父接口
             -->
            <property name="rootInterface" value=""/>

        </javaClientGenerator>



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

            <!-- optional   , only for mybatis3 runtime
                 自动生成的键值（identity,或者序列值）
               如果指定此元素，MBG将会生成<selectKey>元素，然后将此元素插入到SQL Map的<insert> 元素之中
               sqlStatement 的语句将会返回新的值
               如果是一个自增主键的话，你可以使用预定义的语句,或者添加自定义的SQL语句. 预定义的值如下:
                  Cloudscape     This will translate to: VALUES IDENTITY_VAL_LOCAL()
                  DB2:         VALUES IDENTITY_VAL_LOCAL()
                  DB2_MF:        SELECT IDENTITY_VAL_LOCAL() FROM SYSIBM.SYSDUMMY1
                  Derby:         VALUES IDENTITY_VAL_LOCAL()
                  HSQLDB:     CALL IDENTITY()
                  Informix:     select dbinfo('sqlca.sqlerrd1') from systables where tabid=1
                  MySql:         SELECT LAST_INSERT_ID()
                  SqlServer:     SELECT SCOPE_IDENTITY()
                  SYBASE:     SELECT @@IDENTITY
                  JDBC:        This will configure MBG to generate code for MyBatis3 suport of JDBC standard generated keys. 
This is a database independent method of obtaining the value from identity columns.
                  identity: 自增主键  If true, then the column is flagged as an identity column and the generated <selectKey>
 element will be placed after the insert (for an identity column). If false, then the generated <selectKey> will be placed before 
the insert (typically for a sequence).

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


            <!-- optional.
                    列的命名规则：
                    MBG使用 <columnRenamingRule> 元素在计算列名的对应 名称之前，先对列名进行重命名，
                    作用：一般需要对BUSI_CLIENT_NO 前的BUSI_进行过滤
                    支持正在表达式
                     searchString 表示要被换掉的字符串
                     replaceString 则是要换成的字符串，默认情况下为空字符串，可选
            -->
            <columnRenamingRule searchString="" replaceString=""/>



            <!-- optional.告诉 MBG 忽略某一列
                    column，需要忽略的列
                    delimitedColumnName:true ,匹配column的值和数据库列的名称 大小写完全匹配，false 忽略大小写匹配
                    是否限定表的列名，即固定表列在Model中的名称
            -->
            <ignoreColumn column="PLAN_ID"  delimitedColumnName="true" />


            <!--optional.覆盖MBG对Model 的生成规则
                 column: 数据库的列名
                 javaType: 对应的Java数据类型的完全限定名
                 在必要的时候可以覆盖由JavaTypeResolver计算得到的java数据类型. For some databases, this is necessary to handle "odd" 
database types (e.g. MySql's unsigned bigint type should be mapped to java.lang.Object).
                 jdbcType:该列的JDBC数据类型(INTEGER, DECIMAL, NUMERIC, VARCHAR, etc.)，该列可以覆盖由JavaTypeResolver计算得到的Jdbc类型，
对某些数据库而言，对于处理特定的JDBC 驱动癖好 很有必要(e.g. DB2's LONGVARCHAR type should be mapped to VARCHAR for iBATIS).
                 typeHandler:

            -->
            <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：

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:Javajdk1.7.0_71injava -Dmaven.home=D:softwareapache-maven-3.0.5-bin -Dclassworlds.conf=D:softwareapache-maven-3.0.5-bininm2.conf 
-Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:applicationsJetBrainsIntelliJ IDEA 14.0.2in" -Dfile.encoding=UTF-8 -classpath 
"D:softwareapache-maven-3.0.5-binootplexus-classworlds-2.4.jar;D:applicationsJetBrainsIntelliJ IDEA 14.0.2libidea_rt.jar" 
com.intellij.rt.execution.application.AppMain org.codehaus.classworlds.Launcher -Didea.version=14.0.2 -s 
D:softwareapache-maven-3.0.5-binconfsettings.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	utorsrcmainjavaorglouishometutorpoLession.java was overwritten
[WARNING] Existing file E:sources	utorsrcmainjavacomfoo	ouristdaoLessionMapper.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

 

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:Javajdk1.7.0_71injava -Dmaven.home=D:softwareapache-maven-3.0.5-bin -Dclassworlds.conf=D:softwareapache-maven-3.0.5-bininm2.conf -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:applicationsJetBrainsIntelliJ IDEA 14.0.2in" -Dfile.encoding=UTF-8 -classpath "D:softwareapache-maven-3.0.5-binootplexus-classworlds-2.4.jar;D:applicationsJetBrainsIntelliJ IDEA 14.0.2libidea_rt.jar" com.intellij.rt.execution.application.AppMain org.codehaus.classworlds.Launcher -Didea.version=14.0.2 -s D:softwareapache-maven-3.0.5-binconfsettings.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	utorsrcmainjavaorglouishometutorpoLession.java was overwritten
[WARNING] Existing file E:sources	utorsrcmainjavacomfoo	ouristdaoLessionMapper.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