stream

问题 Hello World! Currently I'm writing a simple Client/Server application which uses sockets to do the communitcation. My Client and my Server application are working fine with each other but if I try to query my Server application with a real web-browser (like Mozilla Firefox), then it comes to an exception. I think that my streams are not compatible with Mozilla Firefox. This little code line always leads to an IOException with the error message "invalid stream header: 47455420". From Firefox I

问题 Hello World! Currently I'm writing a simple Client/Server application which uses sockets to do the communitcation. My Client and my Server application are working fine with each other but if I try to query my Server application with a real web-browser (like Mozilla Firefox), then it comes to an exception. I think that my streams are not compatible with Mozilla Firefox. This little code line always leads to an IOException with the error message "invalid stream header: 47455420". From Firefox I

问题 Hello World! Currently I'm writing a simple Client/Server application which uses sockets to do the communitcation. My Client and my Server application are working fine with each other but if I try to query my Server application with a real web-browser (like Mozilla Firefox), then it comes to an exception. I think that my streams are not compatible with Mozilla Firefox. This little code line always leads to an IOException with the error message "invalid stream header: 47455420". From Firefox I

问题 When Server and Client are communicating using Strings (using BufferedReader and PrintWriter classes), the BufferedReader class has a method called ready() , meaning that there is a string waiting for the client to grab and process. This method also makes the server to be made with 2 threads, which is what I want to achieve. When using ObjectInputStream and ObjectOutputStream classes, OIS class doesn't have a 'ready()' method, instead it has a method called 'available()' which returns the

问题 I am using Named Pipes to communicate with a process. I have been able to make it work with the following code. (Original code found here : via archive.org ) class ProgramPipeTest { public void ThreadSenderStartClient(object obj) { // Ensure that we only start the client after the server has created the pipe ManualResetEvent SyncClientServer = (ManualResetEvent)obj; using (NamedPipeClientStream pipeStream = new NamedPipeClientStream(".","ToSrvPipe",PipeDirection.Out,PipeOptions.None)) { //

问题 Issue I am attempting to stream results from a postgres query to a frontend application, rather than eagerly fetching all results. The problem is that I can only see streamed results only in my terminal (i.e. first in "org.jooq.tools.LoggerListener : Record fetched: ..." and then with a stream.get().forEach(s -> debug) ), and the class which references this stream only produces null values when called upon to view the ResultSet in the frontend. This data may be used for other tasks as well (e

问题 I have a class that I want to give an output stream as a member to, to wit: class GameBase { protected: ofstream m_OutputWriter; ... } There is a method in this class that takes a string argument and opens m_OutputWriter to point to that file, so data may be output to that file by using the standard << operator; However, what I would like is to make the stream point to cout by default, so that if the output path is not specified, output goes to the console output instead of to a file, and it

问题 I'm getting Exception in thread "main" java.lang.NullPointerException at java.io.FileOutputStream.<init>(FileOutputStream.java:201) at java.io.FileOutputStream.<init>(FileOutputStream.java:99) at lib.Entry.serialize(Entry.java:17) at main.Main.main(Main.java:8) Where Entry.java:17 is stream.writeObject(this); (see below) Entry.java package lib; import java.io.*; public class Entry { // Superclass. String filename; // Set below. String name; // Set by the subclass. public void main() { this

问题 I'm getting Exception in thread "main" java.lang.NullPointerException at java.io.FileOutputStream.<init>(FileOutputStream.java:201) at java.io.FileOutputStream.<init>(FileOutputStream.java:99) at lib.Entry.serialize(Entry.java:17) at main.Main.main(Main.java:8) Where Entry.java:17 is stream.writeObject(this); (see below) Entry.java package lib; import java.io.*; public class Entry { // Superclass. String filename; // Set below. String name; // Set by the subclass. public void main() { this

问题 I'm basically stuck at excercise 3.56 in SICP. The problem goes like this: Exercise 3.56. A famous problem, first raised by R. Hamming, is to enumerate, in ascending order with no repetitions, all positive integers with no prime factors other than 2, 3, or 5. One obvious way to do this is to simply test each integer in turn to see whether it has any factors other than 2, 3, and 5. But this is very inefficient, since, as the integers get larger, fewer and fewer of them fit the requirement. As