java向前台传json数据 java上传json文件

public void importJson(MultipartFile file) {
	InputStream inputStream = file.getInputStream();
	Reader reader = new InputStreamReader(inputStream, "utf-8");
	int ch = 0;
	StringBuffer stringBuffer = new StringBuffer();
	while ((ch = reader.read()) != -1) {
		stringBuffer.append((char) ch);
	}
	// 关闭流
	reader.close();
	String jsonString = stringBuffer.toString();
	System.out.println(jsonString);
}