忽略JSONObject中的重复键

import org.json.JSONObject;

public class IgnoreDuplicateKeysExample {
    public static void main(String[] args) {
        JSONObject originalObject = new JSONObject("{\"key1\": \"value1\", \"key2\": \"value2\", \"key1\": \"value3\"}");

        JSONObject newObject = new JSONObject();
        for (String key : originalObject.keySet()) {
            newObject.put(key, originalObject.get(key));
        }

        System.out.println("Original Object: " + originalObject);
        System.out.println("New Object (with ignored duplicate keys): " + newObject);
    }
}

Original Object: {"key1":"value1","key2":"value2","key1":"value3"}
New Object (with ignored duplicate keys): {"key2":"value2","key1":"value3"}