Javaがjsonデータを読み込んで中国語の文字化けを解決する

//从json文件中读取数据
		StringBuffer stringBuffer = new StringBuffer();
		try {
			BufferedReader bufferedReader = 
					new BufferedReader(new InputStreamReader(new FileInputStream(file)));
			String line;
			while((line=bufferedReader.readLine()) != null) {
				stringBuffer.append(line);
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		//开始解析
		JSONObject jsonObject = new JSONObject(stringBuffer.toString());

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));