Example usage for java.net URL openConnection

Introduction

In this page you can find the example usage for java.net URL openConnection.

Prototype

public URLConnection openConnection() throws java.io.IOException

Source Link

Document

Returns a java.net.URLConnection URLConnection instance that represents a connection to the remote object referred to by the URL .

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    URL url = new URI("http://www.google.com").toURL();
    URLConnection conn = url.openConnection();
    Reader rd = new InputStreamReader(conn.getInputStream());

    EditorKit kit = new HTMLEditorKit();
    HTMLDocument doc = (HTMLDocument) kit.createDefaultDocument();
    kit.read(rd, doc, 0);/* ww  w .java2 s.  co  m*/

    HTMLDocument.Iterator it = doc.getIterator(HTML.Tag.A);
    while (it.isValid()) {
        SimpleAttributeSet s = (SimpleAttributeSet) it.getAttributes();

        String link = (String) s.getAttribute(HTML.Attribute.HREF);
        if (link != null) {
            System.out.println(link);
        }
        it.next();
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    byte[] b = new byte[1];
    Properties systemSettings = System.getProperties();
    systemSettings.put("http.proxyHost", "proxy.mydomain.local");
    systemSettings.put("http.proxyPort", "80");

    URL u = new URL("http://www.google.com");
    HttpURLConnection con = (HttpURLConnection) u.openConnection();
    BASE64Encoder encoder = new BASE64Encoder();
    String encodedUserPwd = encoder.encode("mydomain\\MYUSER:MYPASSWORD".getBytes());
    con.setRequestProperty("Proxy-Authorization", "Basic " + encodedUserPwd);
    DataInputStream di = new DataInputStream(con.getInputStream());
    while (-1 != di.read(b, 0, 1)) {
        System.out.print(new String(b));
    }// w ww .j a  v  a  2s .  co m
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    int c;/*from   w w w .  ja v a  2  s.com*/
    URL hp = new URL("http", "www.java2s.com", 80, "/");
    URLConnection hpCon = hp.openConnection();
    if (hpCon.getContentLength() > 0) {
        InputStream input = hpCon.getInputStream();
        int i = hpCon.getContentLength();
        while (((c = input.read()) != -1) && (--i > 0)) {
            System.out.print((char) c);
        }
        input.close();
    } else {
        System.out.println("No Content Available");
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    byte[] b = new byte[1];
    Properties systemSettings = System.getProperties();
    systemSettings.put("http.proxyHost", "proxy.mydomain.local");
    systemSettings.put("http.proxyPort", "80");

    Authenticator.setDefault(new Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("mydomain\\username", "password".toCharArray());
        }//from  ww w  .j av  a2 s  .c  o  m
    });

    URL u = new URL("http://www.google.com");
    HttpURLConnection con = (HttpURLConnection) u.openConnection();
    DataInputStream di = new DataInputStream(con.getInputStream());
    while (-1 != di.read(b, 0, 1)) {
        System.out.print(new String(b));
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    URL url = new URL("http://localhost:8080/postedresults.jsp");
    URLConnection conn = url.openConnection();
    conn.setDoInput(true);// ww w .j a v a  2 s  .c o  m
    conn.setDoOutput(true);
    conn.setUseCaches(false);
    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
    String content = "CONTENT=HELLO JSP !&ONEMORECONTENT =HELLO POST !";

    out.writeBytes(content);
    out.flush();
    out.close();

    DataInputStream in = new DataInputStream(conn.getInputStream());
    String str;
    while (null != ((str = in.readUTF()))) {
        System.out.println(str);
    }
    in.close();
}

From source file:Main.java

public static void main(String s[]) throws Exception {
    try {//from  w ww  .  j  a va2  s .c  o m
        Properties systemSettings = System.getProperties();
        systemSettings.put("proxySet", "true");
        systemSettings.put("http.proxyHost", "proxy.mycompany.local");
        systemSettings.put("http.proxyPort", "80");

        URL u = new URL("http://www.java.com");
        HttpURLConnection con = (HttpURLConnection) u.openConnection();
        sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder();
        String encodedUserPwd = encoder.encode("domain\\username:password".getBytes());
        con.setRequestProperty("Proxy-Authorization", "Basic " + encodedUserPwd);
        con.setRequestMethod("HEAD");
        System.out.println(con.getResponseCode() + " : " + con.getResponseMessage());
        System.out.println(con.getResponseCode() == HttpURLConnection.HTTP_OK);
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println(false);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.java2s.com");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);

    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);//from w w w .  jav  a  2  s  .c o m

    for (HTMLDocument.Iterator iterator = htmlDoc.getIterator(HTML.Tag.A); iterator.isValid(); iterator
            .next()) {

        AttributeSet attributes = iterator.getAttributes();
        String srcString = (String) attributes.getAttribute(HTML.Attribute.HREF);
        System.out.print(srcString);
        int startOffset = iterator.getStartOffset();
        int endOffset = iterator.getEndOffset();
        int length = endOffset - startOffset;
        String text = htmlDoc.getText(startOffset, length);
        System.out.println(" - " + text);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.google.com");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);

    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);/*w  w w  .j  a v a 2 s  . c  o  m*/

    for (HTMLDocument.Iterator iterator = htmlDoc.getIterator(HTML.Tag.A); iterator.isValid(); iterator
            .next()) {

        AttributeSet attributes = iterator.getAttributes();
        String srcString = (String) attributes.getAttribute(HTML.Attribute.HREF);
        System.out.print(srcString);
        int startOffset = iterator.getStartOffset();
        int endOffset = iterator.getEndOffset();
        int length = endOffset - startOffset;
        String text = htmlDoc.getText(startOffset, length);
        System.out.println(" - " + text);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    URL url = new URL("http://www.google.com");
    URLConnection connection = url.openConnection();
    InputStream is = connection.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);

    HTMLEditorKit htmlKit = new HTMLEditorKit();
    HTMLDocument htmlDoc = (HTMLDocument) htmlKit.createDefaultDocument();
    HTMLEditorKit.Parser parser = new ParserDelegator();
    HTMLEditorKit.ParserCallback callback = htmlDoc.getReader(0);
    parser.parse(br, callback, true);/*  ww w .  ja  va2  s . c  o m*/

    for (HTMLDocument.Iterator iterator = htmlDoc.getIterator(HTML.Tag.A); iterator.isValid(); iterator
            .next()) {

        AttributeSet attributes = iterator.getAttributes();
        String srcString = (String) attributes.getAttribute(HTML.Attribute.HREF);
        System.out.print(srcString);
        int startOffset = iterator.getStartOffset();
        int endOffset = iterator.getEndOffset();
        int length = endOffset - startOffset;
        String text = htmlDoc.getText(startOffset, length);
        System.out.println("  " + text);
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    URL u = new URL("http://www.java2s.com");
    HttpURLConnection uc = (HttpURLConnection) u.openConnection();
    int code = uc.getResponseCode();
    String response = uc.getResponseMessage();
    System.out.println("HTTP/1.x " + code + " " + response);
    for (int j = 1;; j++) {
        String header = uc.getHeaderField(j);
        String key = uc.getHeaderFieldKey(j);
        if (header == null || key == null)
            break;
        System.out.println(uc.getHeaderFieldKey(j) + ": " + header);
    }// www . j a  v a 2s  . c o m
    InputStream in = new BufferedInputStream(uc.getInputStream());

    Reader r = new InputStreamReader(in);
    int c;
    while ((c = r.read()) != -1) {
        System.out.print((char) c);
    }
}