《一》首先从https://github.com/mybatis/generator下载源代码，然后找到org.mybatis.generator.api下面的IntrospectedTable文件，修改以下两个方法，然后重新打个jar包。

1.修改calculateJavaClientAttributes方法

protected void calculateJavaClientAttributes() {

if (context.getJavaClientGeneratorConfiguration() == null) {

return;

}

StringBuilder sb = new StringBuilder();

sb.append(calculateJavaClientImplementationPackage());

sb.append('.');

sb.append(fullyQualifiedTable.getDomainObjectName());

sb.append("DAOImpl"); //$NON-NLS-1$

setDAOImplementationType(sb.toString());

sb.setLength(0);

sb.append(calculateJavaClientInterfacePackage());

sb.append('.');

sb.append(fullyQualifiedTable.getDomainObjectName());

sb.append("DAO"); //$NON-NLS-1$

setDAOInterfaceType(sb.toString());

sb.setLength(0);

sb.append(calculateJavaClientInterfacePackage());

sb.append('.');

sb.append(fullyQualifiedTable.getDomainObjectName());

sb.append("Mapper"); //$NON-NLS-1$

if(null!=calculateJavaClientInterfacePackage() && calculateJavaClientInterfacePackage().endsWith(".dro")){

setMyBatis3JavaMapperType(sb.toString()+"R");

}else{

setMyBatis3JavaMapperType(sb.toString());

}

sb.setLength(0);

sb.append(calculateJavaClientInterfacePackage());

sb.append('.');

sb.append(fullyQualifiedTable.getDomainObjectName());

sb.append("SqlProvider"); //$NON-NLS-1$

setMyBatis3SqlProviderType(sb.toString());

} 2.修改calculateMyBatis3XmlMapperFileName方法

protected String calculateMyBatis3XmlMapperFileName() {

StringBuilder sb = new StringBuilder();

sb.append(fullyQualifiedTable.getDomainObjectName());

if(null!=calculateJavaClientInterfacePackage() && calculateJavaClientInterfacePackage().endsWith(".dro")){

sb.append("MapperR.xml"); //$NON-NLS-1$

}else{

sb.append("Mapper.xml"); //$NON-NLS-1$

}

return sb.toString();

}

《二》generatorConfiguration的配置文件，javaClientGenerator的targetPackage这个包的名字需要以 ".dro" 结尾

《三》使用命令

java -jar mybatis-generator-core-1.3.2.jar -configfile generatorConfig-dro.xml -overwrite

即可生成只读的接口和xml了，并命名结尾为MapperR.java和MapperR.xml。