Java Utililty Methods URL Query

List of utility methods to do URL Query

  1. HOME
  2. Java
  3. U
  4. URL Query

Description

The list of methods to do URL Query are organized into topic(s).

Method

intquery(URL host, String endpoint, String customer, String name, OutputStream out)
query 
String f1 = (customer == null) ? null : "customer=" + customer;
String f2 = (name == null) ? null : "name=" + name;
String filter = ((f1 == null) ? "?" : "?" + f1 + "&") + ((f2 == null) ? "" : f2);
URL url = new URL(host, endpoint + filter);
int responseCode;
HttpURLConnection connection = null;
InputStream input = null;
try {
...
StringqueryEndpoint(String url)
Query an endpoint. 
HttpURLConnection.setFollowRedirects(false);
HttpURLConnection conn = null;
BufferedReader ins;
StringBuilder outs = new StringBuilder();
char[] buffer = new char[1024];
String text = null;
int tmpi;
try {
...
StringappendQueryParams(String url, Map params)
Append query parameters to given url 
String fullUrl = new String(url);
if (params != null) {
    boolean first = (fullUrl.indexOf('?') == -1);
    for (String param : params.keySet()) {
        if (first) {
            fullUrl += '?';
            first = false;
        } else {
...
StringgetHTTPQuery(String urlToRead)
get HTTP Query 
URL url;
HttpURLConnection conn;
BufferedReader rd;
String line;
String result = "";
try {
    url = new URL(urlToRead);
    conn = (HttpURLConnection) url.openConnection();
...
MapgetQueryParams(String url)
Retrieve the query parameters from given url 
Map<String, String> params = new HashMap<String, String>();
int start = url.indexOf('?');
while (start != -1) {
    int equals = url.indexOf('=', start);
    String param = "";
    if (equals != -1) {
        param = url.substring(start + 1, equals);
    } else {
...
StringqueryHtml(String url)
query Html 
HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
connection.setInstanceFollowRedirects(true);
int code = connection.getResponseCode();
if (code == 200) {
    InputStream in = connection.getInputStream();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];
    int len;
...
Listsearch(String query, int numberOfUrls)
search 
List<String> listOfURLs = new ArrayList<String>();
String APIkey = "AIzaSyDNZ6K2wI2z2-j1tTSaZrpgUQJpOV2DRv8";
query = URLEncoder.encode(query, "UTF-8");
String stringURL = "https://www.googleapis.com/customsearch/v1?key=" + APIkey
        + "&cx=013036536707430787589:_pqjad5hr1a&q=" + query + "&alt=json";
URL url = new URL(stringURL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
...