使用HttpURLConnection下载文件-连接超时错误

Question

我编写了一个java程序来从url NSE Bhavcopy下载文件

但是我得到了“thread'main'java.net.ConnectException：Connection timed Ut：Connect”，我尝试了以下排列和组合，但没有成功。

null

以下是代码和跟踪以供参考，有人可以帮助我吗

 String myUrl = "https://www.nseindia.com/content/historical/EQUITIES/2017/NOV/cm06NOV2017bhav.csv.zip";
 String fileName = "d:\\download.zip";

 Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("10.100.1.124", 3128));

 URL url = new URL(myUrl);
 HttpURLConnection uc = (HttpURLConnection) url.openConnection(proxy);

 String accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
 String agent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.83 Safari/537.1";

 uc.setRequestProperty("Accept", accept);
 uc.setRequestProperty("User-Agent", agent);
 uc.setRequestMethod("GET");
 uc.setConnectTimeout(15*1000);
 Authenticator.setDefault(new MyAuthenticator());uc.connect();  //I get "connection timed out error" for this line

痕迹

     Exception in thread "main" java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
at java.net.URL.openStream(Unknown Source)
at org.apache.commons.io.FileUtils.copyURLToFile(FileUtils.java:844)
at cashflow.downloadMTM.option2(downloadMTM.java:76)
at cashflow.downloadMTM.main(downloadMTM.java:71)

Answer 1

downloadFile（“http://www.bseindia.com/download/bhavcopy/equity/eq_isincode_071117.zip”,“d:\market feeds\bse bhavcopy\”）；

public static void downloadFile(String source, String destination) throws Exception { 

    try{
    Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("10.100.1.124", 3128));

    URL oracle = new URL(source);
    URLConnection yc = oracle.openConnection(proxy);

    InputStream in = yc.getInputStream();
    FileOutputStream out = new FileOutputStream(destination + "\\bhavcopy.zip");
    copySource2Dest(in, out, 1024);
    out.close();

    extractFolder(destination + "\\bhavcopy.zip", destination);

    Path path = FileSystems.getDefault().getPath(destination, "bhavcopy.zip");
    boolean succ = Files.deleteIfExists(path);

    System.out.println("Download is successfull");
    }
    catch(Exception e){
        System.out.println("Error in downloading : " + e);
    }
}

 public static void copySource2Dest(InputStream input, OutputStream output, int bufferSize)
         throws IOException {
             byte[] buf = new byte[bufferSize];
             int n = input.read(buf);
             while (n >= 0) {
                 output.write(buf, 0, n);
                 n = input.read(buf);
             }
             output.flush();
         }

public static void extractFolder(String zipFile,String extractFolder) 
{
    try
    {
        int BUFFER = 2048;
        File file = new File(zipFile);

        ZipFile zip = new ZipFile(file);
        String newPath = extractFolder;

        new File(newPath).mkdir();
        Enumeration zipFileEntries = zip.entries();

        ZipEntry entry;

        // Process each entry
        while (zipFileEntries.hasMoreElements())
        {
            // grab a zip file entry
            entry = (ZipEntry) zipFileEntries.nextElement();
            String currentEntry = entry.getName();

            File destFile = new File(newPath, currentEntry);
            File destinationParent = destFile.getParentFile();

            // create the parent directory structure if needed
            destinationParent.mkdirs();

            if (!entry.isDirectory())
            {
                BufferedInputStream is = new BufferedInputStream(zip
                .getInputStream(entry));
                int currentByte;
                // establish buffer for writing file
                byte data[] = new byte[BUFFER];

                // write the current file to disk
                FileOutputStream fos = new FileOutputStream(destFile);
                BufferedOutputStream dest = new BufferedOutputStream(fos,
                BUFFER);

                // read and write until last byte is encountered
                while ((currentByte = is.read(data, 0, BUFFER)) != -1) {
                    dest.write(data, 0, currentByte);
                }
                dest.flush();
                dest.close();
                is.close();
            }
        }
        zip.close();
    }
    catch (Exception e){
            System.out.println("ERROR: "+e.getMessage());
    }
}