MyBatis Generator原生提供的生成方式targetRuntime有几种，但都不符合项目需求或想自定义自己的方法。 网上的文章也很多： 如： 这里我说下我的做法： 1、继承IntrospectedTableMyBatis3Impl，重写自己要改写的方法 InsoIntrospectedTable.java
重写calculateXmlMapperGenerator使用自己的XMLMapperGenerator
重写createJavaClientGenerator使用自己的JavaMapperGenerator 我的做法比较粗暴，就是注释掉原来的逻辑，自己new自己的替代原来的。
public class InsoIntrospectedTable extends IntrospectedTableMyBatis3Impl { protected void calculateXmlMapperGenerator(AbstractJavaClientGenerator javaClientGenerator, List warnings, ProgressCallback progressCallback) {// if (javaClientGenerator == null) {// if (context.getSqlMapGeneratorConfiguration() != null) {// xmlMapperGenerator = new XMLMapperGenerator();// }// } else {// xmlMapperGenerator = javaClientGenerator.getMatchedXMLGenerator();// } xmlMapperGenerator = new InsoXMLMapperGenerator(); initializeAbstractGenerator(xmlMapperGenerator, warnings, progressCallback); } protected AbstractJavaClientGenerator createJavaClientGenerator() { if (context.getJavaClientGeneratorConfiguration() == null) { return null; }// String type = context.getJavaClientGeneratorConfiguration()// .getConfigurationType(); AbstractJavaClientGenerator javaGenerator;// if ("XMLMAPPER".equalsIgnoreCase(type)) { //$NON-NLS-1$// javaGenerator = new JavaMapperGenerator();// } else if ("MIXEDMAPPER".equalsIgnoreCase(type)) { //$NON-NLS-1$// javaGenerator = new MixedClientGenerator();// } else if ("ANNOTATEDMAPPER".equalsIgnoreCase(type)) { //$NON-NLS-1$// javaGenerator = new AnnotatedClientGenerator();// } else if ("MAPPER".equalsIgnoreCase(type)) { //$NON-NLS-1$// javaGenerator = new JavaMapperGenerator();// } else {// javaGenerator = (AbstractJavaClientGenerator) ObjectFactory// .createInternalObject(type);// } javaGenerator = new InsoJavaMapperGenerator(); return javaGenerator; }} 2、继承XMLMapperGenerator，重写自己要改写的方法
InsoXMLMapperGenerator.java在getSqlMapElement方法中，可以添加或删除自己要的方法，这里我只添加了一个selectAll方法
public class InsoXMLMapperGenerator extends XMLMapperGenerator { public InsoXMLMapperGenerator() { super(); } protected XmlElement getSqlMapElement() { FullyQualifiedTable table = introspectedTable.getFullyQualifiedTable(); progressCallback.startTask(getString( "Progress.12", table.toString())); //$NON-NLS-1$ XmlElement answer = new XmlElement("mapper"); //$NON-NLS-1$ String namespace = introspectedTable.getMyBatis3SqlMapNamespace(); answer.addAttribute(new Attribute("namespace", //$NON-NLS-1$ namespace)); context.getCommentGenerator().addRootComment(answer); addResultMapWithoutBLOBsElement(answer); addResultMapWithBLOBsElement(answer); addExampleWhereClauseElement(answer); addMyBatis3UpdateByExampleWhereClauseElement(answer); addBaseColumnListElement(answer); addBlobColumnListElement(answer); addSelectByExampleWithBLOBsElement(answer); addSelectByExampleWithoutBLOBsElement(answer); addSelectByPrimaryKeyElement(answer); addDeleteByPrimaryKeyElement(answer); addDeleteByExampleElement(answer); addInsertElement(answer); addInsertSelectiveElement(answer); addCountByExampleElement(answer); addUpdateByExampleSelectiveElement(answer); addUpdateByExampleWithBLOBsElement(answer); addUpdateByExampleWithoutBLOBsElement(answer); addUpdateByPrimaryKeySelectiveElement(answer); addUpdateByPrimaryKeyWithBLOBsElement(answer); addUpdateByPrimaryKeyWithoutBLOBsElement(answer); //add select all addSimpleSelectAllElement(answer); return answer; } protected void addSimpleSelectAllElement( XmlElement parentElement) { if (introspectedTable.getRules() .generateSelectByPrimaryKey()) { AbstractXmlElementGenerator elementGenerator = new InsoSelectAllElementGenerator(); initializeAndExecuteGenerator(elementGenerator, parentElement); } }} 3、继承JavaMapperGenerator，重写自己要改写的方法
InsoJavaMapperGenerator.java在getCompilationUnits方法中定制自己要的方法，这里我只添加了一个selectAll方法。 注意：这里的项要与上面的XMLMapperGenerator一一对应，其它情况，我没有研究（比较菜。。。）
public class InsoJavaMapperGenerator extends JavaMapperGenerator { @Override public List getCompilationUnits() { progressCallback.startTask(getString("Progress.17", //$NON-NLS-1$ introspectedTable.getFullyQualifiedTable().toString())); CommentGenerator commentGenerator = context.getCommentGenerator(); FullyQualifiedJavaType type = new FullyQualifiedJavaType( introspectedTable.getMyBatis3JavaMapperType()); Interface interfaze = new Interface(type); interfaze.setVisibility(JavaVisibility.PUBLIC); commentGenerator.addJavaFileComment(interfaze); String rootInterface = introspectedTable .getTableConfigurationProperty(PropertyRegistry.ANY_ROOT_INTERFACE); if (!stringHasValue(rootInterface)) { rootInterface = context.getJavaClientGeneratorConfiguration() .getProperty(PropertyRegistry.ANY_ROOT_INTERFACE); } if (stringHasValue(rootInterface)) { FullyQualifiedJavaType fqjt = new FullyQualifiedJavaType( rootInterface); interfaze.addSuperInterface(fqjt); interfaze.addImportedType(fqjt); } addCountByExampleMethod(interfaze); addDeleteByExampleMethod(interfaze); addDeleteByPrimaryKeyMethod(interfaze); addInsertMethod(interfaze); addInsertSelectiveMethod(interfaze); addSelectByExampleWithBLOBsMethod(interfaze); addSelectByExampleWithoutBLOBsMethod(interfaze); addSelectByPrimaryKeyMethod(interfaze); addUpdateByExampleSelectiveMethod(interfaze); addUpdateByExampleWithBLOBsMethod(interfaze); addUpdateByExampleWithoutBLOBsMethod(interfaze); addUpdateByPrimaryKeySelectiveMethod(interfaze); addUpdateByPrimaryKeyWithBLOBsMethod(interfaze); addUpdateByPrimaryKeyWithoutBLOBsMethod(interfaze); //增加selectAll addSelectAllMethod(interfaze); List answer = new ArrayList (); if (context.getPlugins().clientGenerated(interfaze, null, introspectedTable)) { answer.add(interfaze); } List extraCompilationUnits = getExtraCompilationUnits(); if (extraCompilationUnits != null) { answer.addAll(extraCompilationUnits); } return answer; } /** * 增加eelectAll * @param interfaze */ protected void addSelectAllMethod(Interface interfaze) { if (introspectedTable.getRules() .generateSelectByPrimaryKey()) { AbstractJavaMapperMethodGenerator methodGenerator = new SelectAllMethodGenerator(); initializeAndExecuteGenerator(methodGenerator, interfaze); } } 4、配置XML使用上面自定义targetRuntime
inso-generator\src\main\resources\generatorConfig-sys.xml
- 在targetRuntime中配置全路径类名
- 在table节点，可以配置一些开关，是否生成某些方法，如下，我关掉生成ByExample的方法
- 在table节点里，属性ignoreQualifiersAtRuntime，默认为false，如果设置为true，在生成的SQL中，table名字不会加上catalog或schema，此配置，在Oracle下好用。
5、pom文件参考
项目原型是ibase4j(http://git.oschina.net/iBase4J/iBase4J)，此pom仅供参考一下吧
4.0.0 inso-generator inso-generator http://maven.apache.org jar com.xxcomp inso 0.5.0 ${project.name} src/main/java org.apache.maven.plugins maven-compiler-plugin 3.3 1.7 1.7 UTF-8 none org.apache.maven.plugins maven-jdeps-plugin 3.0.0 jdkinternals test-jdkinternals org.mybatis.generator mybatis-generator-maven-plugin 1.3.2 true true src/main/resources/${configurationFile} com.oracle ojdbc6 11.2.0 com.xxcomp inso-generator ${project.version} Generate MyBatis Artifacts generate
通过以上的改造，可以简单自定义组装一些原有的方法，生成自己需要的sqlMap，进一步还可以自己编写具体的方法实现，生成真正自定义的sql。（此步，我没有去做，太懒了。。） 从没写过文章，真不会写，若看不明白或对你没帮忙，大侠请自动忽略。 写一写才发觉，写这个有点费时间，虽然我只是贴一下。 2016-09-27 10:31:24