<classPathEntry>
驱动文件指定配置项
<columnOverride>
将数据库中的字段重命名为实体类的属性
column 数据库中字段名
property POJO属性名
javaType POJO类型
jdbcType 数据库字段类型
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  | <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >   <property name="useActualColumnNames" value="true"/>   <generatedKey column="ID" sqlStatement="DB2" identity="true" />   <columnOverride column="DATE_FIELD" property="startDate" />   <ignoreColumn column="FRED" />   <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> </table> 
  | 
<columnRenamingRule>
按规则将数据库中的字段重命名为实体类的属性
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  | <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >   <columnRenamingRule searchString="^CUST_" replaceString="" />   .. </table> 
  | 
代码上面的注释规则
子属性:property
porperties:
suppressAllComments  false时打开注释,true时关闭注释
suppressDate  false时打开时间标志,true时关闭…真是反人类啊
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  | <commentGenerator>   <property name="suppressDate" value="true" /> </commentGenerator> 
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<context>
这个实在不知道怎么解释,反正就是大环境
targetRuntime 可选项,可填值为MyBatis3,MyBatis3Simple(默认的),Ibatis2Java2,Ibatis2Java5
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  | <context id="DB2Tables" targetRuntime="MyBatis3">     ... </context> 
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<generatedKey>
指定自增加以及Id
column 字段
sqlStatement 数据库语句,可以为MySql,DB2,SqlServer,SyBase等http://mybatis.github.io/generator/configreference/generatedKey.html
identity true为id,false不为id
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  | <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >   <property name="useActualColumnNames" value="true"/>   <generatedKey column="ID" sqlStatement="DB2" identity="true" />   <columnOverride column="DATE_FIELD" property="startDate" />   <ignoreColumn column="FRED" />   <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> </table> 
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<ignoreColumn>
忽略字段
column 字段名
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  | <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >   <ignoreColumn column="FRED" />   .. </table> 
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<javaClientGenerator>
Mapper生成配置
type XMLMAPPER配置文件方式,ANNOTATEDMAPPER注解方式
http://mybatis.github.io/generator/configreference/javaClientGenerator.html
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  | <javaClientGenerator type="XMLMAPPER"     targetPackage="dao.mapper" targetProject="app">     <property name="enableSubPackages" value="true" /> </javaClientGenerator> 
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<javaModelGenerator>
实体类生成配置
http://mybatis.github.io/generator/configreference/javaModelGenerator.html
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  | <javaModelGenerator targetPackage="domain"     targetProject="app">     <property name="enableSubPackages" value="true" />     <property name="trimStrings" value="false" /> </javaModelGenerator> 
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<javaTypeResolver>
mybatis里专门用来处理NUMERIC和DECIMAL类型的策略
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  | <javaTypeResolver>   <property name="forceBigDecimals" value="true" /> </javaTypeResolver> 
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<jdbcConnection>
jdbc配置,不解释了哈
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  | <jdbcConnection driverClass="COM.ibm.db2.jdbc.app.DB2Driver"     connectionURL="jdbc:db2:MBGTEST"     userId="db2admin"     password="db2admin"> </jdbcConnection> 
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<sqlMapGenerator>
生成sql语句的xml文件
在mybatis2里是必须的,在mybatis3中,只有用XML方式的时候才是需要的。
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  | <sqlMapGenerator targetPackage="test.model"      targetProject="\MyProject\src">   <property name="enableSubPackages" value="true" /> </sqlMapGenerator> 
  |