code: public File findJavaSourceFile(String soruceRootDir,Class<?> clazz)
  	{
  		String url = StringUtils.replace(clazz.getPackage().toString().split(" ")[1], ".",File.separator);
  		String sourceFilename = soruceRootDir+url +File.separator + clazz.getSimpleName() + ".java";
  		File javaSourceFile=new File(sourceFilename);
  		return javaSourceFile;
  	}
docs: 查找类源码文件
  @param soruceRootDir 源码目录
  @param clazz 类
  @return