I am getting a response String from server like below
{
"name": "Json",
"detail": {
"first_name": "Json",
"last_name": "Scott",
"age": "23"
},
"status": "success"
}
I want to get the value of First name. How can I do that? Thanks in Advance.
To extract the name and projects properties from the JSON string, use the json_extract function as in the following example. The json_extract function takes the column containing the JSON string, and searches it using a JSONPath -like expression with the dot . notation. JSONPath performs a simple tree traversal.
To query JSON data, you can use standard T-SQL. If you must create a query or report on JSON data, you can easily convert JSON data to rows and columns by calling the OPENJSON rowset function. For more information, see Convert JSON Data to Rows and Columns with OPENJSON (SQL Server).
On the “Data” tab, from the “Get & Transform Data” section, select Get Data > From File > From JSON. You will see your computer's standard “Import” window. Here, open the folder where your JSON file is located. Double-click the file to connect it to Excel.
see this code what i am used in my application
String data="{'foo':'bar','coolness':2.0, 'altitude':39000, 'pilot':{'firstName':'Buzz','lastName':'Aldrin'}, 'mission':'apollo 11'}";
I retrieved like this
JSONObject json = (JSONObject) JSONSerializer.toJSON(data);
double coolness = json.getDouble( "coolness" );
int altitude = json.getInt( "altitude" );
JSONObject pilot = json.getJSONObject("pilot");
String firstName = pilot.getString("firstName");
String lastName = pilot.getString("lastName");
System.out.println( "Coolness: " + coolness );
System.out.println( "Altitude: " + altitude );
System.out.println( "Pilot: " + lastName );
Pasting my code here, this should help. It shows the package which can be used.
import org.json.JSONException;
import org.json.JSONObject;
public class extractingJSON {
public static void main(String[] args) throws JSONException {
// TODO Auto-generated method stub
String jsonStr = "{\"name\":\"SK\",\"arr\":{\"a\":\"1\",\"b\":\"2\"}}";
JSONObject jsonObj = new JSONObject(jsonStr);
String name = jsonObj.getString("name");
System.out.println(name);
String first = jsonObj.getJSONObject("arr").getString("a");
System.out.println(first);
}
}
Use a JSON parser. There are plenty of JSON parsers written in Java.
http://www.json.org/
Look under the Java section and find one you like.
If you don't mind adding a dependency, you can use JsonPath.
import com.jayway.jsonpath.JsonPath;
String firstName = JsonPath.read(rawJsonString, "$.detail.first_name");
"$" specifies the root of the raw json string and then you just specify the path to the field you want. This will always return a string. You'll have to do any casting yourself.
Be aware that it'll throw a PathNotFoundException at runtime if the path you specify doesn't exist.
String jsonErrorString=((HttpClientErrorException)exception).getResponseBodyAsString();
JSONObject jsonObj=null;
String errorDetails=null;
String status=null;
try {
jsonObj = new JSONObject(jsonErrorString);
int index =jsonObj.getString("detail").indexOf(":");
errorDetails=jsonObj.getString("detail").substring(index);
status=jsonObj.getString("status");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
item.put("status", status);
item.put("errordetailMsg", errorDetails);
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