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Thread: web client

  1. #1
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    Default web client

    i have been given an assignment to right a web client in java language please can i get help with the codes to implement that?.


  2. #2
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    Default Re: web client

    Hello 5723,

    Have you started this assignment yet? We will need more details to be able to help you move forward.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  3. #3
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    Default Re: web client

    The code i have is this and i was asked to write it into a .html file

    package httpconn;
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.io.*;
    import java.net.URL;
    import java.net.URLConnection;
     
    /**
     *
     * @author HARLEY
     */
    //URLExp
    public class Main {
     
        public static void main(String[] args) {
            try {
                URL google = new URL("http://www.google.com/");
                URLConnection yc = google.openConnection();
                BufferedReader in = new BufferedReader(new InputStreamReader(yc    .getInputStream()));
                String inputLine;
                while ((inputLine = in.readLine()) != null) {
                    System.out.println(inputLine);
                                    //File tst = new File("tst.html");
                                    //FileOutputStream out = new FileOutputStream(tst);
                }
                in.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
     
    }
    Last edited by JavaPF; June 10th, 2009 at 10:58 AM. Reason: Please use [code] [/code] tags! Read my sig.

  4. #4
    mmm.. coffee JavaPF's Avatar
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    Default Re: web client

    Hello 5723,

    Try this:

    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.io.*;
    import java.net.URL;
    import java.net.URLConnection;
     
    /**
     * 
     * @author HARLEY
     * JavaProgrammingForums.com
     */
     
    public class Main {
     
        public static void main(String[] args) {
     
            String newLine = System.getProperty("line.separator");
     
            try {            
                Writer output = null;
                File file = new File("index.html");
                output = new BufferedWriter(new FileWriter(file));
     
                URL google = new URL("http://www.google.com/");
                URLConnection yc = google.openConnection();
                BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
                String inputLine;
                while ((inputLine = in.readLine()) != null) {
                    //System.out.println(inputLine);
                    output.write(inputLine);
                    output.write(newLine);
                }
                in.close();
                output.close();
                System.out.println("File written");
     
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    The source from the webpage will be saved to index.html in the application root directory.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  5. #5
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    Default Re: web client

    i get an error code like this in my netbeans development area

    java.net.ConnectException: Connection timed out: connect
            at java.net.DualStackPlainSocketImpl.connect0(Native Method)
            at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
            at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:310)
            at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:176)
            at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:163)
            at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:154)
            at java.net.Socket.connect(Socket.java:568)
            at java.net.Socket.connect(Socket.java:518)
            at sun.net.NetworkClient.doConnect(NetworkClient.java:174)
            at sun.net.www.http.HttpClient.openServer(HttpClient.java:404)
            at sun.net.www.http.HttpClient.openServer(HttpClient.java:516)
            at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
            at sun.net.www.http.HttpClient.New(HttpClient.java:321)
            at sun.net.www.http.HttpClient.New(HttpClient.java:333)
            at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:806)
            at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:747)
            at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:672)
            at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1020)
            at httpfile.main(httpfile.java:26)

  6. #6
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    Default Re: web client

    thanks my problem has been solved

  7. #7
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    Thumbs up Re: web client

    Quote Originally Posted by 5723 View Post
    thanks my problem has been solved
    Glad I could help
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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  8. #8
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    Default Re: web client

    please tell me what is a servelet and how is it created

  9. #9
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    Default Re: web client

    What Is a Servlet?

    A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by web servers. For such applications, Java Servlet technology defines HTTP-specific servlet classes.

    What Is a Servlet? - The Java EE 5 Tutorial

    Java Servlet tutorials,JSP tutorial,Servlet Example,Servlet tutorial,J2EE tutorials
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