If the root element's name is not provided in a JSON response from a REST request in Java, you can use the JSONTokener class to handle the parsing process. Here's an example code snippet:
import org.json.JSONObject;
import org.json.JSONTokener;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class JsonParser {
public static void main(String[] args) {
try {
URL url = new URL("http://example.com"); // replace with your API endpoint
BufferedReader reader = new BufferedReader(
new InputStreamReader(url.openStream()));
StringBuilder builder = new StringBuilder();
String input;
while ((input = reader.readLine()) != null) {
builder.append(input);
}
JSONObject json = (JSONObject) new JSONTokener(builder.toString()).nextValue();
System.out.println(json.toString(2)); // prints the JSON response in a readable format
} catch (Exception e) {
e.printStackTrace();
}
}
}
In this code, we first create a URL object and open a stream to read the JSON response. We then create a StringBuilder to store the input from the stream, and read the data into the builder using the BufferedReader class.
Next, we create a new JSONTokener object with the string contents of the builder, and call the nextValue() method to parse the JSON response into a JSONObject. We can print this JSONObject to the console using the toString() method, along with a pretty-printing format using the toString(int indentFactor) method.
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Asked: 2023-06-04 04:22:29 +0000
Seen: 10 times
Last updated: Jun 04 '23
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