How to print the values of a dictionary-like StringBuffer in java?

Question

I have this code :

StringBuffer sb = new StringBuffer();
try {
   BufferedReader reader = request.getReader();
   String line = null;
   while ((line = reader.readLine()) != null) {
      sb.append(line);
      System.out.println(line);
   }
} catch (Exception e) {
   e.printStackTrace();
}

the line :

System.out.println(line);

prints in console at the end of the loop like this:

{"signupname":"John","signuppassword":"1234","signupnickname":"Jonny",    
"signupdescription":"student","signupphoto":"(here photo url)"}

how can I get only the values of the keys? I want something like this: John 1234 Jonny student (here photo url)

Thanks for helpers:)

Answer 1

If each row is a complete JSON object. You can use Gson JSON parser.

https://mvnrepository.com/artifact/com.google.code.gson/gson

StringBuffer sb = new StringBuffer();
try {
  BufferedReader reader = request.getReader();
  String line;
  Gson gson = new Gson();
  while ((line = reader.readLine()) != null) {
    Map map = gson.fromJson(line, Map.class);
    for(Object value : map.values()) {
      System.out.println(value);
    }
    sb.append(line);
    System.out.println(line);
  }
} catch (Exception e) {
  e.printStackTrace();
}