Codename One で特定のアドレスを確認する必要があるプロジェクトに取り組んでいます。アドレスが存在しない場合、コード内の lectura という名前の変数は 404 である必要があります。ただし、存在しないアドレスを見つけると、コードが停止し、java.net.SocketTimeoutException というメッセージが画面に表示されます。オプションはキャンセルまたは再試行します。アドレスが存在しないことをプログラムが認識し、一時停止するのではなく、先に進む必要があります。私のコードは次のとおりです。
public int readCNO(String cantidad, int number){
ConnectionRequest r3 = new ConnectionRequest();
r3.setUrl("http://" + ipZona + "/arduino/" + cantidad + "!" + type + "/" + Integer.toString(number));
r3.setPost(false);
r3.setDuplicateSupported(true);
r3.setTimeout(100);
NetworkManager.getInstance().addToQueueAndWait(r3);
r3.addResponseListener(new ActionListener()
{
public void actionPerformed(ActionEvent ev)
{
try
{
NetworkEvent event = (NetworkEvent) ev;
byte[] data= (byte[]) event.getMetaData();
String decodedData = new String(data,"UTF-8");
System.out.println(decodedData);
lectura = Integer.parseInt(decodedData.trim());
} catch (Exception e)
{
//ex.printStackTrace();
lectura = 404;
}
}
});
NetworkManager.getInstance().addToQueue(r3);
//NetworkManager.getInstance().killAndWait(r3);
return lectura;
}
助けて本当にありがとう！
デビッド。
完全な例外は後で示されますが、上記のコードがどこにあるのか、どこで呼び出されるのかではなく、私のクラスを参照していません。
java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at com.codename1.impl.javase.JavaSEPort.getResponseCode(JavaSEPort.java:4557)
at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:330)
at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:261)
at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)
java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at com.codename1.impl.javase.JavaSEPort.getResponseCode(JavaSEPort.java:4557)
at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:330)
at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:261)
at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)