リストからいくつかの ID を読み取り、それらからさまざまな URL を見つけ出し、画像を C: ドライブに保存するプログラムを作成しています。
ブラウザで画像の URL に移動すると、画像の URL が機能します。さらに、別のサーバーから画像への URL を試すと、このプログラムは完全に機能します。問題は、この URL で特定の画像に接続しようとすると、うまくいかないように見えることです。奇妙なことに、URL に ping を実行すると、0% のパケット損失が発生します。さらに、私のブラウザは、Java プログラム上で機能するような特別なプロキシ設定を使用していません。
以下のエラー/出力の原因は何ですか?
Job started ...
1) AC_0A47_EXT1.jpg 2/0/47/307/398/HA47H01_H.jpg
Exception #3 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 java.net.Socket.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.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.URL.openStream(Unknown Source)
at pullVFMImagesFromVFMURLs.writeImage(pullVFMImagesFromVFMURLs.java:99)
at pullVFMImagesFromVFMURLs.pullvfmimagesfromvfmurls(pullVFMImagesFromVFMURLs.java:48)
at pullVFMImagesFromVFMURLs.main(pullVFMImagesFromVFMURLs.java:21)
より詳しい情報：
ID リスト (MissingImagez.txt) は次のとおりです。
AC_0A47_EXT1.jpg|2/0/47/307/398/xxx.jpg
AC_0C09_EXT1.jpg|3/0/44/130/589/xyz.jpg
AC_0C16_RM1.jpg|3/0/44/602/895/zzz.jpg
AC_0C17_BAR1.jpg|3/0/45/284/10/www.jpg
対応するコードは次のとおりです。
public static void main(String[] args)
{
pullImagesFromURLs processor = new pullImagesFromURLs();
String passParam = null;
for (int i = 0; i < args.length; i++)
passParam = (args[i].toString().toUpperCase());
processor.pullvfmimagesfromvfmurls(passParam);
}
public void pullvfmimagesfromvfmurls(String passParam)
{
System.out.println("Job started ...");
try
{
boolean bOK = false;
String sOrigName = "";
String sURL = "";
int iCount = 0;
int iInt = 0;
try
{
BufferedReader in = new BufferedReader(new FileReader("/tmp/missingImagez.txt"));
String str;
while ((str = in.readLine()) != null)
{
iInt = str.indexOf("|");
sOrigName = str.substring(0,iInt);
sURL = str.substring(iInt+1);
iCount ++;
System.out.println(iCount + ") " + sOrigName + " " + sURL);
bOK = writeImage(sOrigName, sURL);
}
try
{
if (in != null)
in.close();
}
catch (Exception e)
{
}
}
catch (IOException e)
{
System.out.println("Exception #1 " + e);
}
}
catch (Exception e)
{
System.out.println("Exception #2 " + e);
System.exit(-666);
}
System.out.println("Job completed");
System.exit(-666);
}
private static boolean writeImage(String origName, String vfmURL)
{
boolean bOK = true;
String sPath = "C:/images/img2754/";
try
{
final String vfmURLPrefix = new String("http://www.blah.blah2.com/imageRepo/");
BufferedInputStream stream = null;
FileOutputStream destination = null;
URLConnection urlc = null;
int readSize = 1024 * 50;
int bytes_read;
URL url = null;
url = new URL(vfmURLPrefix + vfmURL);
urlc = url.openConnection();
urlc.setDoOutput(true);
stream = new BufferedInputStream(url.openStream());
System.out.println(url.toString());
destination = new FileOutputStream(sPath+origName);
byte[] buffer = new byte[readSize];
while(true)
{
bytes_read = stream.read(buffer);
if (bytes_read == -1) {break;}
destination.write(buffer, 0, bytes_read);
stream.close();
}
if(stream != null)
stream.close();
if(destination != null)
destination.close();
}
catch(Exception e)
{
System.out.println("Exception #3 " + e);
}
return bOK;
}
Apache HttpComponents を使用してみました。次の出力を取得します。
Exception #3 org.apache.http.conn.HttpHostConnectException: Connection to http://www.blah.blah2.com/ refused.
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at pullVFMImagesFromVFMURLs.writeImage(pullVFMImagesFromVFMURLs.java:100)
at pullVFMImagesFromVFMURLs.pullvfmimagesfromvfmurls(pullVFMImagesFromVFMURLs.java:55)
at pullVFMImagesFromVFMURLs.main(pullVFMImagesFromVFMURLs.java:28)
Caused by: 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 org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
... 9 more