为什么我得到 java.net.SocketException: Connection reset
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Why I get java.net.SocketException: Connection reset
提问by Jammy
I need sent some requests to server side and get reponse, sometimes when I call specific method to run the flollowing common code, I get one error in line(addToCookieJar(connection);), any idea how this get happened?
我需要向服务器端发送一些请求并得到响应，有时当我调用特定的方法来运行以下公共代码时，我得到一个错误（addToCookieJar（connection）;），知道这是怎么发生的吗？
URL url = new URL(providerURL);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestProperty("Content-Type", "application/octet-stream");
// We understand gzip encoding
connection.addRequestProperty("Accept-Encoding", "gzip");
if (cookie != null && cookieHandler != null) {
connection.setRequestProperty("Cookie", cookie);
}
if (cookieHandler == null) {
addFromCookieJar(connection);
}
// Send the request
ObjectOutputStream oos = new ObjectOutputStream(connection.getOutputStream());
oos.writeObject(remote.getName());
oos.writeObject(m.getName()); // method name
oos.writeObject(m.getParameterTypes()); // formal parameters
oos.writeObject(args); // actual parameters
oos.flush();
oos.close();
if (cookieHandler == null) {
cookieJar.put(new URI(providerURL), connection.getHeaderFields());
}
Exception:
例外：
java.lang.reflect.UndeclaredThrowableException
at $Proxy0.updateDocument(Unknown Source)
at com.agst.ui.gantt.GanttPanel.doUpdateDocument(GanttPanel.java:1931)
at com.agst.ui.gantt.GanttPanel.save(GanttPanel.java:1419)
at com.agst.ui.gantt.GanttPanel.run(GanttPanel.java:1673)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.SocketException: Connection reset
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at com.agst.rmi.RemoteCallHandler.call(RemoteCallHandler.java:196)
at com.agst.rmi.RemoteCallHandler.invoke(RemoteCallHandler.java:142)
... 5 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderFields(Unknown Source)
at com.agst.rmi.RemoteCallHandler.addToCookieJar(RemoteCallHandler.java:529)
at com.agst.rmi.RemoteCallHandler.call(RemoteCallHandler.java:192)
... 6 more
回答by Waldheinz
This error indicates that the remote side has closed the connection while your side was still trying to read from it. You should check if
此错误表示远程端已关闭连接，而您的端仍在尝试从中读取。你应该检查是否
- there is a problem on the server (check it's logs) or
- you are trying to read more data than the server supplies
- 服务器出现问题（检查它的日志）或
- 您正在尝试读取比服务器提供的更多的数据
回答by Sanjay T. Sharma
What does the addToCookieJarmethod do? Passing in the connection object might be a problem to this method since you close the OutputStreamobtained from the connection. Are you by any chance trying to retrieve and operate on the output stream object in the addToCookieJar method?
什么是addToCookieJar方法吗？由于您关闭了OutputStream从连接获得的对象，因此传递连接对象可能是此方法的问题。您是否有机会尝试在 addToCookieJar 方法中检索和操作输出流对象？
