Java JSONObject.has方法代码示例

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
private Boolean validateConfig(JSONObject config)
{
    Boolean valid = true;
    if (!config.has("accessKeyId"))
    {
        System.out.println("config parameter 'accessKeyId' is missing.");
        valid = false;
    }
    if (!config.has("secretAccessKey"))
    {
        System.out.println("config parameter 'secretAccessKey' is missing.");
        valid = false;
    }
    if (!config.has("region"))
    {
        System.out.println("config parameter 'region' is missing.");
        valid = false;
    }
    if (!config.has("tableName"))
    {
        System.out.println("config parameter 'tableName' is missing.");
        valid = false;
    }
    return valid;
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
/**
 * Check if all the keys and the values in the request are present in the response. The response might contain additional data which is ignored.
 *
 * @param requestAttributes
 * @param responseAttributes
 * @return
 * @throws Exception
 */
public static boolean checkIfAttributesAreEqual(String requestAttributes, String responseAttributes) throws Exception {
  JSONObject requestJson = new JSONObject(requestAttributes);
  JSONObject responseJson = new JSONObject(responseAttributes);

  Iterator iterator = requestJson.keys();
  while (iterator.hasNext()) {
    String requestAttribute = iterator.next().toString();
    if (!responseJson.has(requestAttribute) || !requestJson.get(requestAttribute).equals(responseJson.get(requestAttribute)))
      return false;
  }
  return true;
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
private HNUserItem createUserFromHNAPIResult(String result)
{
	if(result == null || result.isEmpty())
		return null;
	try 
	{ 
		HNUserItem useritem = new HNUserItem();
		JSONObject profile_jo = new JSONObject(result);
		useritem.setId(profile_jo.getString("id"));
		useritem.setCreated(profile_jo.getLong("created"));
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
		sdf.setTimeZone(TimeZone.getTimeZone("America/Louisville"));
		useritem.setCreatedHumanReadable(sdf.format(profile_jo.getInt("karma")*1000));
		useritem.setKarma(profile_jo.getInt("karma"));
		if(profile_jo.has("about"))
			useritem.setAbout(profile_jo.getString("about"));
		useritem.setDelay(profile_jo.getInt("delay"));
		if(profile_jo.has("submitted"))
		{
			JSONArray ja = profile_jo.getJSONArray("submitted");
			HashSet<String> hs = new HashSet<String>();
			if (ja != null) 
			{ 
				int len = ja.length();
				for (int i=0;i<len;i++)
				{ 
					hs.add(ja.get(i).toString());
				} 
				useritem.setSubmitted(hs);
			} 
		}
		return useritem;
	} 
	catch (JSONException e) 
	{
		e.printStackTrace();
		return null;
	}
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
public AmazonServiceException handle(HttpResponse response)
        throws Exception {
    JSONObject jsonBody = getBodyAsJson(response);
    Class<? extends AmazonServiceException> exceptionClass = exceptionClasses.get(response.getStatusCode());
    AmazonServiceException result;

    // Support other attribute names for the message?
    // TODO: Inspect exception type (caching details) and apply other values from the body
    String message = jsonBody.has("message") ? jsonBody.getString("message") : jsonBody.getString("Message");

    if (exceptionClass != null) {
        result = exceptionClass.getConstructor(String.class).newInstance(message);
    } else {
        result = AmazonServiceException.class.getConstructor(String.class).newInstance(message);
    }

    result.setServiceName(response.getRequest().getServiceName());
    result.setStatusCode(response.getStatusCode());

    if (response.getStatusCode() < 500) {
        result.setErrorType(ErrorType.Client);
    } else {
        result.setErrorType(ErrorType.Service);
    }

    for (Entry<String, String> headerEntry : response.getHeaders().entrySet()) {
        if (headerEntry.getKey().equalsIgnoreCase("X-Amzn-RequestId")) {
            result.setRequestId(headerEntry.getValue());
        }
    }

    return result;
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
public static boolean checkIfAttributesContainKeyAndValue(String attributes, String key, String value) throws Exception {
  JSONObject jsonObject = new JSONObject(attributes);
  if (!jsonObject.has(key) || !jsonObject.get(key).equals(value))
    return false;
  return true;
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
public static boolean checkIfAttributesContainKey(String attributes, String key) throws Exception {
  JSONObject jsonObject = new JSONObject(attributes);
  if (!jsonObject.has(key))
    return false;
  return true;
}
 

import com.amazonaws.util.json.JSONObject; //导入方法依赖的package包/类
private HNItemItem createItemFromHNAPIResult(String unchecked_result)
{
	if(unchecked_result == null || unchecked_result.isEmpty())
	{
		System.err.println("Error trying to create new item in DB: result string from HN api was null or empty");
		return null;
	}
	try{
		HNItemItem hnii = null;
		JSONObject new_jo = new JSONObject(unchecked_result);
		// these are the required fields (as far as we're concerned)
		// without them, we can't even make sense of what to do with it
		if(new_jo.has("id") && new_jo.has("by") && new_jo.has("time") && new_jo.has("type")) 
		{
  //** THESE FIELDS MUST MATCH HNItemItem EXACTLY ***
			hnii = new HNItemItem();
			hnii.setId(new_jo.getLong("id"));
			hnii.setBy(new_jo.getString("by"));
			hnii.setTime(new_jo.getLong("time"));
			hnii.setType(new_jo.getString("type"));
			if(new_jo.has("dead") && new_jo.getBoolean("dead") == true)
				hnii.setDead(true);
			else
				hnii.setDead(false);
			if(new_jo.has("deleted") && new_jo.getBoolean("deleted") == true)
				hnii.setDeleted(true);
			else
				hnii.setDeleted(false);
			if(new_jo.has("parent"))
				hnii.setParent(new_jo.getLong("parent"));
			if(new_jo.has("score"))
				hnii.setScore(new_jo.getLong("score"));
			if(new_jo.has("kids"))
			{
				HashSet<Long> kids_ts = new HashSet<Long>();
				JSONArray ja = new_jo.getJSONArray("kids");
				if(ja != null && ja.length() > 0)
				{	  
					int x = 0;
					while(x < ja.length())
					{
						kids_ts.add(ja.getLong(x));
						x++;
					}
					if(kids_ts.size() == ja.length()) // if the number of items has changed for some reason, just skip bc something has messed up
					{
						System.out.println("createHNItemFromHNAPIResult setting kids=" + kids_ts.size());
						hnii.setKids(kids_ts);
					}
				}
				else
					hnii.setKids(null);
			}
			if(new_jo.has("url"))
				hnii.setURL(new_jo.getString("url"));
			return hnii;
		}
		else
		{
			System.err.println("Error trying to create new item in DB: missing required id, by, time or type values");
			return null;
		}
}
catch(JSONException jsone)
{
 System.err.println("Error trying to create new item in DB: result string was not valid JSON.");
 return null;
}
}