Get the json data in the requset request

This article will briefly introduce how to get the request parameters when all the request parameters are placed in json (requset.getparparameter cannot be obtained)

Request example:

Solution idea: Use stream to read, convert String, and then convert to json object

public static String getPostString(HttpServletRequest request) {
    
    
		BufferedReader in = null;
		String parameters = "";
		try {
    
    
			in = new BufferedReader(new InputStreamReader(
					request.getInputStream(), "utf-8"));
			String ln;
			StringBuffer stringBuffer = new StringBuffer();
			while ((ln = in.readLine()) != null) {
    
    
				stringBuffer.append(ln);
				stringBuffer.append("\r\n");
			}
			parameters = stringBuffer.toString();
		} catch (UnsupportedEncodingException e) {
    
    
			e.printStackTrace();
		} catch (IOException e) {
    
    
			e.printStackTrace();
		}
		return parameters;
	}

//	实际应用
String reqBody = getPostString(request);
if(reqBody != null && !reqBody.equals("")) {
    
    
	String reqBodyinfo= URLDecoder.decode(reqBody, HTTP.UTF_8);
	JSONObject jsonData = (JSONObject) JSONValue.parse(reqBodyinfo);
	String data = jsonData.get("data")+"";
	// 如果data还是个json的话，就需要再转一下
	JSONObject json_data = (JSONObject) JSONValue.parse(data);
	//	再取其中的信息
	int gameID = Integer.parseInt(json_data.get("gameID")+"");
}