用org.mybatis.generator 生成代码

 List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File directory = new File("");// 参数为空
        String courseFile = directory.getCanonicalPath();
        File configFile = new File(courseFile+"/src/test/java/generatorConfig.xml");//mbg.xml为上面创建的配置文件。
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);