code: protected void writeToFile(TableMeta tableMeta) throws IOException {
  		File dir = new File(baseModelOutputDir);
  		if (!dir.exists()) {
  			dir.mkdirs();
  		}
  		
  		String target = baseModelOutputDir + File.separator + tableMeta.baseModelName + ".java";
  		OutputStreamWriter osw = null;
  		try {
  			osw = new OutputStreamWriter(new FileOutputStream(target), "UTF-8");
  			osw.write(tableMeta.baseModelContent);
  		}
  		finally {
  			if (osw != null) {
  				osw.close();
  			}
  		}
  	}
docs: base model 覆盖写入