1.准备json文件
JAVA读取json文件_其他
JAVA读取json文件_json_02
2.编写java代码

	String jsonStr=null;
		try {
			File file = new File("C:\\Users\\TAO\\Desktop\\ss.json");
			FileReader fileReader = new FileReader(file);
			Reader reader = new InputStreamReader(new FileInputStream(file), "Utf-8");
			int ch = 0;
			StringBuffer sb = new StringBuffer();
			while ((ch = reader.read()) != -1) {
				sb.append((char) ch);
			}
			fileReader.close();
			reader.close();
			jsonStr = sb.toString();


		}catch (Exception e){

		}
		String SessionVOs = jsonStr;
		com.alibaba.fastjson.JSONObject ss = com.alibaba.fastjson.JSONObject.parseObject(SessionVOs);

搞定！