Getting String Field from JSONPATH in Java

Question

I currently have the following JSON:

{"content":
    [{"uuid":"123132",
    "firstname" : "Jon",
    "lastname" : "Deer"
     ...
     }
    ]
}

What I am trying to do is use Java to get the string value of "uuid". The following is my code:

JSONPATH jsonPath = new JSONPATH(json);
String myString = jsonPath.getString("content.uuid");
System.out.println(myString);

The resulting string: [123132] The expected string: 123132

Is there another way to get the expected result using JSONPATH without using substring (removing the first and last characters of the string) since it is a bit more messy to look at the code?

Darshan Mehta · Accepted Answer · 2016-03-02 10:15:00Z

8

Due to content being an array, "content.uuid" returns a list of string. However, as we are calling getString() method, that list is converted into String (using toString()) and hence, we are getting [123132] as a result.

Correct way to get the first value is jsonPath.getString("content[0].uuid");

answered Mar 2, 2016 at 10:15

Darshan Mehta

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1 Comment

alxbxbx Over a year ago

And what should we do if we want to get whole string from jsonPath? When we use jsonPath.getString("$") we are getting all object inside root object. But we want whole root object.

Sheetal Mohan Sharma · Accepted Answer · 2016-03-02 10:12:23Z

1

Return value of jsonPath is an array, which is also a valid JSON structure. If you need the data as an other type, e.g. a String in this case, you will have to do the conversion yourself get your value#

Check this page for sample and why it returns array.

answered Mar 2, 2016 at 10:12

Sheetal Mohan Sharma

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Comments

Vikrant Kashyap · Accepted Answer · 2016-03-02 10:33:03Z

have u ever tried google.simple.Json Jar ? This Jar can easily enables u to read this JSONObject Easily.

                       {
                         "content":
                           [{"uuid":"123132",
obj_ComplexJson ==>          "firstname" : "Jon",
                             "lastname" : "Deer"
                              ...
                            }],[],[],[]
                        }
 JSONObject obj_ComplexJson = "{"content":[{}]}""; //this json object contains your Actual Object.
JSONParser parser = new Parser();
JSONArray obj_arr = (JSONArray)parser.parse(obj_ComplexJson.get("content"));
 for(JSONObject eachObj : obj_arr){
         System.out.println(eachObj.get("uuid"));
          ..........
          ..........
     }

Get Maven JSON Simple Maven or Direct Jar File

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