Java Utililty Methods HTTP Request

List of utility methods to do HTTP Request

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Description

The list of methods to do HTTP Request are organized into topic(s).

Method

Stringrequest(String httpUrl, Map httpArgMap)
request 
return request(httpUrl, httpArgMap, null);
Listrequest(String url, int timeout, String method, Map header)
request 
if (!url.contains("http://") && !url.contains("https://"))
    url = "http://" + url;
URL input = new URL(url);
HttpURLConnection connection = (HttpURLConnection) input.openConnection();
connection.setConnectTimeout(timeout);
connection.setRequestMethod(method);
if (header != null) {
    for (Object key : header.keySet())
...
Stringrequest(String url, Map cookies, Map parameters)
request 
HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
connection.setRequestProperty("User-Agent",
        "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36");
if (cookies != null && !cookies.isEmpty()) {
    StringBuilder cookieHeader = new StringBuilder();
    for (String cookie : cookies.values()) {
        if (cookieHeader.length() > 0) {
            cookieHeader.append(";");
...
StringrequestData(String url)
request Data 
URL obj;
try {
    obj = new URL(url);
} catch (MalformedURLException e) {
    return "";
HttpURLConnection con;
try {
...
StringBuilderrequestDataFromUrl(URL url, byte[] tosend, String userAgent)
request Data From Url 
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
if (userAgent != null) {
    urlConnection.setRequestProperty("User-Agent", userAgent);
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setConnectTimeout(5000);
urlConnection.setReadTimeout(20000);
...
voidsaveHttpImage(String requestUrl, String requestMethod, String outputStr, File target)
save Http Image 
try {
    URL url = new URL(requestUrl);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod(requestMethod);
    conn.setConnectTimeout(5000);
    InputStream inStream = conn.getInputStream();
    byte[] data = readInputStream(inStream);
    FileOutputStream outStream = new FileOutputStream(target);
...
StringsendGet(String url)
send Get 
HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
con.setRequestMethod("GET");
con.setRequestProperty("User-Agent", USER_AGENT);
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null)
    response.append(inputLine);
...
StringsendGet(String url, String param)
send Get 
String result = "";
BufferedReader in = null;
HttpURLConnection conn = null;
try {
    String urlNameString = url + "?" + param;
    URL realUrl = new URL(urlNameString);
    conn = (HttpURLConnection) realUrl.openConnection();
    conn.setConnectTimeout(10000);
...
HttpURLConnectionsendGetRequest(String requestURL)
Makes an HTTP request using GET method to the specified URL. 
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoInput(true); 
httpConn.setDoOutput(false); 
return httpConn;
StringsendGetRequest(String url, String cookies)
send Get Request 
HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
conn.setRequestProperty("Cookie", cookies);
conn.setRequestProperty("Referer", "http://login.sina.com.cn/signup/signin.php?entry=sso");
conn.setRequestProperty("User-Agent",
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:34.0) Gecko/20100101 Firefox/34.0");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
BufferedReader read = new BufferedReader(new InputStreamReader(conn.getInputStream(), "gbk"));
String line = null;
...