Example usage for java.net HttpURLConnection getContentType

Introduction

In this page you can find the example usage for java.net HttpURLConnection getContentType.

Prototype

public String getContentType() 

Source Link

Document

Returns the value of the content-type header field.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.google.com");
    HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();

    System.out.println("Content-Type: " + httpCon.getContentType());

}

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From source file:Main.java

protected static String getResponseAsString(HttpURLConnection conn, boolean responseError) throws IOException {
    String charset = getResponseCharset(conn.getContentType());
    String header = conn.getHeaderField("Content-Encoding");
    boolean isGzip = false;
    if (header != null && header.toLowerCase().contains("gzip")) {
        isGzip = true;/*from  ww w  .  j a v a 2 s  .  c o m*/
    }
    InputStream es = conn.getErrorStream();
    if (es == null) {
        InputStream input = conn.getInputStream();
        if (isGzip) {
            input = new GZIPInputStream(input);
        }
        return getStreamAsString(input, charset);
    } else {
        if (isGzip) {
            es = new GZIPInputStream(es);
        }
        String msg = getStreamAsString(es, charset);
        if (TextUtils.isEmpty(msg)) {
            throw new IOException(conn.getResponseCode() + ":" + conn.getResponseMessage());
        } else if (responseError) {
            return msg;
        } else {
            throw new IOException(msg);
        }
    }
}

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From source file:com.thomaskuenneth.openweathermapweather.WeatherUtils.java

public static String getFromServer(String url) throws MalformedURLException, IOException {
    StringBuilder sb = new StringBuilder();
    URL _url = new URL(url);
    HttpURLConnection httpURLConnection = (HttpURLConnection) _url.openConnection();
    String contentType = httpURLConnection.getContentType();
    String charSet = "ISO-8859-1";
    if (contentType != null) {
        Matcher m = PATTERN_CHARSET.matcher(contentType);
        if (m.matches()) {
            charSet = m.group(1);//  w ww .  ja  va2s  .c  om
        }
    }
    final int responseCode = httpURLConnection.getResponseCode();
    if (responseCode == HttpURLConnection.HTTP_OK) {
        InputStreamReader inputStreamReader = new InputStreamReader(httpURLConnection.getInputStream(),
                charSet);
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            sb.append(line);
        }
        try {
            bufferedReader.close();
        } catch (IOException ex) {
            LOGGER.log(Level.SEVERE, "getFromServer()", ex);
        }
    }
    httpURLConnection.disconnect();
    return sb.toString();
}

---

From source file:com.risevision.ui.server.utils.MakeRequestServlet.java

private static String getCharsetType(HttpURLConnection connection) {
    String contentType = connection.getContentType();
    String[] values = contentType.split(";"); //The values.length must be equal to 2...
    String charset = "";

    for (String value : values) {
        value = value.trim();/*from   w ww  . j  av  a 2  s. co m*/

        if (value.toLowerCase().startsWith("charset=")) {
            charset = value.substring("charset=".length()).toUpperCase();

            // Some servers include quotes around the charset:
            // Content-Type: text/html; charset="UTF-8"
            if (charset.length() >= 2 && charset.startsWith("\"") && charset.endsWith("\"")) {
                charset = charset.substring(1, charset.length() - 1);
            }
        }
    }

    return charset;
}

---

From source file:com.camel.trainreserve.JDKHttpsClient.java

protected static String getResponseAsString(HttpURLConnection conn) throws IOException {
    String charset = getResponseCharset(conn.getContentType());
    InputStream es = conn.getErrorStream();
    if (es == null) {
        return getStreamAsString(conn.getInputStream(), charset);
    } else {//from   w w  w.  j  ava 2 s .co  m
        String msg = getStreamAsString(es, charset);
        if (StringUtils.isEmpty(msg)) {
            throw new IOException(conn.getResponseCode() + ":" + conn.getResponseMessage());
        } else {
            throw new IOException(msg);
        }
    }
}

---

From source file:Main.java

public static Bitmap getImageFromURL(URL url) {

    Bitmap bitmap = null;//from w w w.j av a  2s .  c o m

    HttpURLConnection connection = null;

    try {

        connection = (HttpURLConnection) url.openConnection();

        if (connection.getResponseCode() != 200) {
            return null;
        }
        if (!CONTENT_TYPE_IMAGE.equalsIgnoreCase(connection.getContentType().substring(0, 5))) {
            return null;
        }

        bitmap = BitmapFactory.decodeStream(connection.getInputStream());

    } catch (IOException e) {

        e.printStackTrace();

    }

    if (connection != null) {

        connection.disconnect();

    }

    return bitmap;

}

---

From source file:com.zack6849.alphabot.api.Utils.java

public static String getTitle(String link) {
    String response = "";
    try {/*from www  . jav  a  2 s. c  om*/
        HttpURLConnection conn = (HttpURLConnection) new URL(link).openConnection();
        conn.addRequestProperty("User-Agent", USER_AGENT);
        String type = conn.getContentType();
        int length = conn.getContentLength() / 1024;
        response = String.format("HTTP %s: %s", conn.getResponseCode(), conn.getResponseMessage());
        String info;
        if (type.contains("text") || type.contains("application")) {
            Document doc = Jsoup.connect(link).userAgent(USER_AGENT).followRedirects(true).get();
            String title = doc.title() == null || doc.title().isEmpty() ? "No title found!" : doc.title();
            info = String.format("%s - (Content Type: %s Size: %skb)", title, type, length);
            return info;
        }
        info = String.format("Content Type: %s Size: %skb", type, length);
        return info;

    } catch (IOException ex) {
        if (ex.getMessage().contains("UnknownHostException")) {
            return Colors.RED + "Unknown hostname!";
        }
        return response.isEmpty() ? Colors.RED + "An error occured" : response;
    }
}

---

From source file:org.rapidcontext.app.plugin.http.HttpPostProcedure.java

/**
 * Attempts to guess the HTTP response character set based on the content
 * type header. Defaults to UTF-8 if no proper character set was specified.
 *
 * @param con            the HTTP connection
 *
 * @return the HTTP response character set
 *//*w  w  w .  ja  va  2 s  .  c  om*/
private static String guessResponseCharset(HttpURLConnection con) {
    String contentType = con.getContentType().replace(" ", "");
    for (String param : contentType.split(";")) {
        if (param.startsWith("charset=")) {
            return param.split("=", 2)[1];
        }
    }
    return "UTF-8";
}

---

From source file:com.gson.util.HttpKit.java

/**
 * ?/*  w  ww.j  a  v a  2 s.  c om*/
 * @param url
 * @return
 * @throws IOException
 */
public static Attachment download(String url) throws IOException {
    Attachment att = new Attachment();
    HttpURLConnection conn = initHttp(url, _GET, null);
    if (conn.getContentType().equalsIgnoreCase("text/plain")) {
        // BufferedReader???URL?  
        InputStream in = conn.getInputStream();
        BufferedReader read = new BufferedReader(new InputStreamReader(in, DEFAULT_CHARSET));
        String valueString = null;
        StringBuffer bufferRes = new StringBuffer();
        while ((valueString = read.readLine()) != null) {
            bufferRes.append(valueString);
        }
        in.close();
        att.setError(bufferRes.toString());
    } else {
        BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());
        String ds = conn.getHeaderField("Content-disposition");
        String fullName = ds.substring(ds.indexOf("filename=\"") + 10, ds.length() - 1);
        String relName = fullName.substring(0, fullName.lastIndexOf("."));
        String suffix = fullName.substring(relName.length() + 1);

        att.setFullName(fullName);
        att.setFileName(relName);
        att.setSuffix(suffix);
        att.setContentLength(conn.getHeaderField("Content-Length"));
        att.setContentType(conn.getHeaderField("Content-Type"));

        att.setFileStream(bis);
    }
    return att;
}

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From source file:Main.java

static void getHTTPXml(URL url) throws Exception {
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod("POST");
    conn.setRequestProperty("ACCEPT", "application/xml");
    InputStream xml = conn.getInputStream();

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    org.w3c.dom.Document document = builder.parse(xml);

    System.out.println(document);
    String doctype = conn.getContentType();
    System.out.println(doctype);/*from  w ww.  j  av a  2  s. c  o m*/

    XPathFactory pathFactory = XPathFactory.newInstance();
    XPath path = pathFactory.newXPath();
    XPathExpression expression;
    expression = path.compile("/result/checkid");
    NodeList nodeList = (NodeList) expression.evaluate(document, XPathConstants.NODESET);
    String checkids[] = getNodeValue(nodeList);
    for (String checkid : checkids) {
        System.out.print(checkid + ", ");
    }
    conn.disconnect();
}

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