arduinoJson library - parse failed

Projects Programming
1

Greetings,

I have a problem with parsing a json recived from from a get request..

I'm not sure if i'm doing it right.. maybe you can help me fixing it.

http://192.168.1.15/?j={test:true}} this works, but not really a valid json
http://192.168.1.15/?j={"test":"true"}} this doesn't work

the problem is that it doesn't parse the string if it's url encoded

I only get the first line of the request, that with the GET request.
I skip the first 8 chars.

{%22test%22:true}}

this is the char array that it's stored into the array;

and the code

#include "WiFiEsp.h"

[wifi stuff]

#include <ArduinoJson.h>
#define json_len 200

char json[json_len];
char json_response[json_len];
int json_index = 0;
int json_response_index = 0;


void setup()
{
  [wifi stuff]
}

void loop()
{
  WiFiEspClient client = server.available();
  if (client) {
    boolean currentLineIsBlank = false;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        
        if(request_line_count == 0 && request_char_count == 5)
        {
          if(c == 'f')
          {
            skip = true;
          }
        }
        
        if(request_line_count == 0)
        {
          request_char_count++;
          if(request_char_count > 8)
          {
            json[json_index++] = c;
            json[json_index] = '\0';
          }
        }
        if (c == '\n' && currentLineIsBlank) {
          
          parseRequest(client);
          break;
        }
        if (c == '\n') {
          currentLineIsBlank = true;
          request_line_count++;
          request_char_count = 0;
        }
        else if (c != '\r') {
          currentLineIsBlank = false;
        }
      }
    }

    delay(10);

    client.stop();
  }
}

void parseRequest(WiFiEspClient client)
{
  StaticJsonBuffer<json_len> jsonBuffer;
  request_line_count = 0;
  request_char_count = 0;
   
  client.print(
    "HTTP/1.1 200 OK\r\n"
    "Content-Type: text/html\r\n"
    "Connection: close\r\n"
    "\r\n");
  
    if(skip == true)
    {
      skip = false;
      client.print(".");
      
    }
    else
    {
      Serial.println(json_index);
      json[json_index - 10] = '\0';
      Serial.println(json);
      JsonObject& root = jsonBuffer.parse(json);
      
      if (!root.success()) {
        Serial.println("parseObject() failed");
        return;
      }
      else
      {
        Serial.println("parseObject() successful");
          
        Serial.println("decodat:");
        root.prettyPrintTo(Serial);      
        client.print(json);
    }
    
  json_index = 0;
  json[json_index] = '\0';
    
}
2

{%22test%22:true}}

this is the char array that it's stored into the array;

Why do you think that that is valid JSON?

3

it's {"status":"true"}, the " gets url encoded to %22

I'm not sure if the library is suposed to decode the string or I'm doing someting wrong..

4

it's {"status":"true"}, the " gets url encoded to %22

Nonsense. What you say you passed to the parseRequest() function was NOT "{"status":"true"}".

You need to decode the data. What you are passing to the library is NOT valid JSON, so of course it can't parse it.

The decoded data MIGHT be "{"status":"true"}", in which case, the library should be able to parse it.