Parsing an Object in Java

Question

Parsing an Object in Java

I have a JavaScript object that I am sending back to Java using AJAX:

var jsonData = {   
        "testJson" : "abc",  
        "userId" : "123" 
};

After printing the map, it appears as follows:

key: jsondata value:[object Object]

What is the correct way to parse this object?

javascript java json ajax

Answer 1

Answer №1

To implement JSON parsing in Java, GSON library can be utilized:

class DataObject() {
  String jsonData;
  int userIdentifier;

  public void setJsonData(String jsonData) {
    this.jsonData = jsonData;
  }
  public String getJsonData() {
    return jsonData;
  }
  ... Same for userIdentifier
}

To parse the JSON data, create a GSON object:

class ParserClass {
  public void parseJsonData(String jsonInput) {
    Gson gson = new Gson();
    DataObject dataObj = gson.fromJson(jsonInput, DataObject.class);
  }
}

The variable dataObj now holds the JSON object using getters and setters.

Answer 2

To implement JSON parsing in Java, GSON library can be utilized:

class DataObject() {
  String jsonData;
  int userIdentifier;

  public void setJsonData(String jsonData) {
    this.jsonData = jsonData;
  }
  public String getJsonData() {
    return jsonData;
  }
  ... Same for userIdentifier
}

To parse the JSON data, create a GSON object:

class ParserClass {
  public void parseJsonData(String jsonInput) {
    Gson gson = new Gson();
    DataObject dataObj = gson.fromJson(jsonInput, DataObject.class);
  }
}

The variable dataObj now holds the JSON object using getters and setters.

Answer 3

Answer №2

Your solution lies here: int id = object.getInt("id");

https://www.w3schools.com/jsref/dom_obj_json.asp

Answer 4

Your solution lies here: int id = object.getInt("id");

https://www.w3schools.com/jsref/dom_obj_json.asp

Answer 5

Answer №3

The provided code snippet creates a JavaScript object named jsonData, which can be converted into a string using the JSON.stringify method before sending it back to the server:

var jsonData = {
    "testJson": "abc",
    "userId": "123"
};
var jsonString = JSON.stringify(jsonData);

Alternatively, in simple cases, you can directly define the JSON string like this:

var jsonString = '{"testJson": "abc", "userId": "123"}';

Answer 6

The provided code snippet creates a JavaScript object named jsonData, which can be converted into a string using the JSON.stringify method before sending it back to the server:

var jsonData = {
    "testJson": "abc",
    "userId": "123"
};
var jsonString = JSON.stringify(jsonData);

Alternatively, in simple cases, you can directly define the JSON string like this:

var jsonString = '{"testJson": "abc", "userId": "123"}';

Parsing an Object in Java

Answer №1

Answer №2

Answer №3

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