Java Code Examples for net.sf.json.JSONArray#iterator()

/***
 * 将对象转换为List对象
 * 
 * @param object
 * @return
 */
public static List toArrayList(Object object) {
	List arrayList = new ArrayList();

	JSONArray jsonArray = JSONArray.fromObject(object);

	Iterator it = jsonArray.iterator();
	while (it.hasNext()) {
		JSONObject jsonObject = (JSONObject) it.next();

		Iterator keys = jsonObject.keys();
		while (keys.hasNext()) {
			Object key = keys.next();
			Object value = jsonObject.get(key);
			arrayList.add(value);
		}
	}

	return arrayList;
}
 

/***
 * 将对象转换为List对象
 * 
 * @param object
 * @return
 */
public static List toArrayList(Object object) {
	List arrayList = new ArrayList();

	JSONArray jsonArray = JSONArray.fromObject(object);

	Iterator it = jsonArray.iterator();
	while (it.hasNext()) {
		JSONObject jsonObject = (JSONObject) it.next();

		Iterator keys = jsonObject.keys();
		while (keys.hasNext()) {
			Object key = keys.next();
			Object value = jsonObject.get(key);
			arrayList.add(value);
		}
	}

	return arrayList;
}
 

/**
 * StringToMap这两个，都加入两个判断的变量，map.put("xnx3_json_if","1/0");	,1为正常，成功，0为失败，没有正确获取或获取的字符串出错
 * 接受的字符串为: 	[{"a":"aaa","b":"bb"}]
 */

@SuppressWarnings("unchecked")
public Map<String, String> StringToMap(String xnx3_input){
	JSONArray json=JSONArray.fromObject(xnx3_input);
	Map<String, String> map=null;
	Iterator<Map<String, String>> iter=json.iterator();
	if(iter.hasNext()){
		map=iter.next();
		map.put("xnx3_json_if", "1");
	}else{
		map=new HashMap<String, String>();
		map.put("xnx3_json_if", "0");
	}
	json=null;
	return map;
}
 

/**
 * 将Json格式的String数据转换为List类型
 * @param args:传入纯文本数据，如[{"a":"aaa","b":"bb"}]
 * 
 */
public List<String[]> StringToList(String xnx3_input){
	JSONArray json=JSONArray.fromObject(xnx3_input);
	List<String[]> list=new ArrayList<String[]>();
	Iterator<Map<String, String>> iter=json.iterator();
	if(iter.hasNext()){
		Map<String, String> map=iter.next();
		Iterator i=map.entrySet().iterator();
		
		while(i.hasNext()){//只遍历一次,速度快
			Map.Entry e=(Map.Entry)i.next();
			System.out.println(e.getKey());
			String[] data=new String[2];
			data[0]=e.getKey().toString();
			data[1]=e.getValue().toString();
			list.add(data);
			data=null;
		}
	}
	json=null;
	return list;
	
}
 

/***
 * 将对象转换为List对象
 * 
 * @param object
 * @return
 */
public static List toArrayList(Object object) {
	List arrayList = new ArrayList();

	JSONArray jsonArray = JSONArray.fromObject(object);

	Iterator it = jsonArray.iterator();
	while (it.hasNext()) {
		JSONObject jsonObject = (JSONObject) it.next();

		Iterator keys = jsonObject.keys();
		while (keys.hasNext()) {
			Object key = keys.next();
			Object value = jsonObject.get(key);
			arrayList.add(value);
		}
	}

	return arrayList;
}
 

@SuppressWarnings("unchecked")
private synchronized void initClusterInfo(boolean force) {
	if (clusterHostsMap.isEmpty() || metricMap.isEmpty() || force) {
		String json = UrlUtils.getContent(hostUrl);
		JSONObject jsonObject = JSONObject.fromObject(json);
		JSONObject messagejson = (JSONObject) jsonObject.get("message");
		JSONObject clustersJson = (JSONObject) messagejson.get("clusters");

		for (String cluster : (Set<String>) clustersJson.keySet()) {
			try {

				JSONArray hostArray = (JSONArray) clustersJson.get(cluster);
				List<String> hostList = new ArrayList<String>();
				Iterator<String> iterator = hostArray.iterator();
				while (iterator.hasNext()) {
					String host = iterator.next();
					hostList.add(host);
				}
				if (hostList.size() != 0) {
					clusterHostsMap.put(cluster, hostList);
				}

				List<String> metricList = httpParser
						.getGangliaAttribute(cluster);
				if (metricList != null && metricList.size() != 0) {
					metricMap.put(cluster, metricList);
				}
			} catch (Exception e) {
				logger.error("Ganglia Http Parser Error", e);
				throw new RuntimeException("Ganglia Http Parser Error", e);
			}
		}
	}

}
 

/**
 * {@inheritDoc}
 */
public List<String> getContexts() throws SparkJobServerClientException {
	List<String> contexts = new ArrayList<String>();
	final CloseableHttpClient httpClient = buildClient();
	try {
		HttpGet getMethod = new HttpGet(jobServerUrl + "contexts");
		getMethod.setConfig(getRequestConfig());
           setAuthorization(getMethod);
		HttpResponse response = httpClient.execute(getMethod);
		int statusCode = response.getStatusLine().getStatusCode();
		String resContent = getResponseContent(response.getEntity());
		if (statusCode == HttpStatus.SC_OK) {
			JSONArray jsonArray = JSONArray.fromObject(resContent);
			Iterator<?> iter = jsonArray.iterator();
			while (iter.hasNext()) {
				contexts.add((String)iter.next());
			}
		} else {
			logError(statusCode, resContent, true);
		}
	} catch (Exception e) {
		processException("Error occurs when trying to get information of contexts:", e);
	} finally {
		close(httpClient);
	}
	return contexts;
}
 

/**
 * {@inheritDoc}
 */
public List<SparkJobInfo> getJobs() throws SparkJobServerClientException {
	List<SparkJobInfo> sparkJobInfos = new ArrayList<SparkJobInfo>();
	final CloseableHttpClient httpClient = buildClient();
	try {
		HttpGet getMethod = new HttpGet(jobServerUrl + "jobs");
		getMethod.setConfig(getRequestConfig());
           setAuthorization(getMethod);
		HttpResponse response = httpClient.execute(getMethod);
		int statusCode = response.getStatusLine().getStatusCode();
		String resContent = getResponseContent(response.getEntity());
		if (statusCode == HttpStatus.SC_OK) {
			JSONArray jsonArray = JSONArray.fromObject(resContent);
			Iterator<?> iter = jsonArray.iterator();
			while (iter.hasNext()) {
				JSONObject jsonObj = (JSONObject)iter.next();
				SparkJobInfo jobInfo = createSparkJobInfo(jsonObj);
				sparkJobInfos.add(jobInfo);
			}
		} else {
			logError(statusCode, resContent, true);
		}
	} catch (Exception e) {
		processException("Error occurs when trying to get information of jobs:", e);
	} finally {
		close(httpClient);
	}
	return sparkJobInfos;
}
 

/**
 * {@inheritDoc}
 */
public List<SparkJobInfo> getJobsByStatus(String jobStatus) throws SparkJobServerClientException {
    if (!INFO_JOBS_STATUS.contains(jobStatus.toUpperCase())) {
        throw new SparkJobServerClientException("Invalid Job Status " +
	jobStatus + ". Supported Job Status : " +
	INFO_JOBS_STATUS.toString());
    }
    List<SparkJobInfo> sparkJobInfos = new ArrayList<SparkJobInfo>();
    final CloseableHttpClient httpClient = buildClient();
    try {
        HttpGet getMethod = new HttpGet(jobServerUrl + "jobs?status=" + jobStatus);
        getMethod.setConfig(getRequestConfig());
        setAuthorization(getMethod);
        HttpResponse response = httpClient.execute(getMethod);
        int statusCode = response.getStatusLine().getStatusCode();
        String resContent = getResponseContent(response.getEntity());
        if (statusCode == HttpStatus.SC_OK) {
            JSONArray jsonArray = JSONArray.fromObject(resContent);
            Iterator<?> iter = jsonArray.iterator();
            while (iter.hasNext()) {
                JSONObject jsonObj = (JSONObject)iter.next();
                SparkJobInfo jobInfo = createSparkJobInfo(jsonObj);
                sparkJobInfos.add(jobInfo);
            }
        } else {
            logError(statusCode, resContent, true);
        }
    } catch (Exception e) {
        processException("Error occurs when trying to get information of jobs:", e);
    } finally {
        close(httpClient);
    }
    return sparkJobInfos;
}
 

@SuppressWarnings("rawtypes")
private MultiLineString parseResponse(Object response) throws IOException {
	
	List<LineString> lines = new ArrayList<LineString>();
	
	String jsonString = responseToString(response);
	JSONObject  json =  JSONObject.fromObject(jsonString);
	
	if ("OK".equals(json.get("status"))) { 
		JSONArray routes = json.getJSONArray("routes");
		JSONArray legs = routes.getJSONObject(0).getJSONArray("legs");
		JSONArray steps = legs.getJSONObject(0).getJSONArray("steps");
		
		if (log.isDebugEnabled())
			log.debug("Get route with " + steps.size() + " steps");
		
		Iterator iter = steps.iterator();
		
		while (iter.hasNext()) {
			JSONObject step = (JSONObject) iter.next();
			String polyline = step.getJSONObject("polyline").getString("points");
			LineString line = decodePolyline(polyline);
			lines.add(line);
		}
	}
	
	return new MultiLineString(lines.toArray(new LineString[] {}), factory);
}
 

/**
 * Extract the relevant data from the Freebase property.
 */
@SuppressWarnings("rawtypes")
public List<Object> extractPropertyValues(Object data, List<String> filters, int cascade, Network network, Map<String, Vertex> processed) {
	List<Object> values = new ArrayList<Object>();
	Set<Object> valuesSet = new HashSet<Object>();
	if (data instanceof JSONObject) {
		if (((JSONObject)data).get("values") == null) {
			return values;
		}
		JSONArray array = ((JSONObject)data).getJSONArray("values");
		Object type = ((JSONObject)data).get("valuetype");
		for (Iterator iterator = array.iterator(); iterator.hasNext(); ) {
			Object value = iterator.next();
			if (value instanceof JSONObject) {
				if (type.equals("compound")) {
					value = processCompoundRelationship((JSONObject)value, cascade, network, processed);
					if ((value != null) && !valuesSet.contains(value)) {
						valuesSet.add(value);
						values.add(value);
					}
				} else {
					Object id = ((JSONObject)value).get("id");
					if (id instanceof String) {
						// Filter ids.
						String domain = extractDomain((String)id);
						if (filters.contains(domain)) {
							continue;
						}
						// Freebase seems to be use 'm' to donate topics.
						if ((cascade > 0) && domain.equals("m")) {
							Vertex nested = processId((String)id, cascade - 1, false, "", network, processed);
							if (!valuesSet.contains(nested)) {
								valuesSet.add(nested);
								values.add(nested);
							}
							continue;
						}
					}
					Object text = ((JSONObject)value).get("value");
					if (text == null) {
						text = ((JSONObject)value).get("text");
					}
					if (text != null) {
						if (!valuesSet.contains(text)) {
							valuesSet.add(text);
							values.add(text);
						}
					}
				}
			}
		}
	}
		
	return values;
}
 

/**
 * 
* json转换list.
* <br>详细说明
* @param jsonStr json字符串
* @return
* @return List<Map<String,Object>> list
* @throws
* @author slj
* @date 2013年12月24日 下午1:08:03
 */
public static List parseJSON2List(String jsonStr) {
	JSONArray jsonArr = JSONArray.fromObject(jsonStr);
	List list = new ArrayList();
	Iterator<JSONObject> it = jsonArr.iterator();
	while (it.hasNext()) {
		JSONObject json2 = it.next();
		list.add(parseJSON2Map(json2.toString()));
	}
	return list;
}
 

/**
 * 
* json转换list.
* <br>详细说明
* @param jsonStr json字符串
* @return
* @return List<Map<String,Object>> list
* @throws
* @author slj
* @date 2013年12月24日 下午1:08:03
 */
public static List parseJSON2List(String jsonStr) {
	JSONArray jsonArr = JSONArray.fromObject(jsonStr);
	List list = new ArrayList();
	Iterator<JSONObject> it = jsonArr.iterator();
	while (it.hasNext()) {
		JSONObject json2 = it.next();
		list.add(parseJSON2Map(json2.toString()));
	}
	return list;
}