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Tag: Call the empty line bind net HTTP server address buffered ADE. Net
Usually when using Tomcat, jetty, just use the inside of the servlet, filter, etc., never thought how they interact with the browser. Work encountered some problems, in the process of communicating with other colleagues and learning the source code, only to understand the bottom of the original is a socket, just know what the so-called NiO is ...
Before you know NiO, be sure to learn about bio and use bio to write a simple HTTP server demo: Browser input any request, print out the request information in the background and output Hello World in the browser.
1 ImportJava.io.BufferedReader;2 ImportJava.io.BufferedWriter;3 Importjava.io.IOException;4 ImportJava.io.InputStream;5 ImportJava.io.InputStreamReader;6 ImportJava.io.OutputStream;7 ImportJava.io.OutputStreamWriter;8 Importjava.net.InetSocketAddress;9 ImportJava.net.ServerSocket;Ten ImportJava.net.Socket; One A Public classBioserver { - PrivateServerSocket ServerSocket; - the PrivateString IP; - - Private intPort; - + PublicBioserver (String IP,intPort) { - This. IP =IP; + This. Port =Port; A } at - Public voidStartlisten ()throwsIOException { -ServerSocket =NewServerSocket (); -Serversocket.bind (NewInetsocketaddress (IP, port));//Create a listener for the specified port and IP - - while(true) { in accept (); - } to } + - Private voidAccept ()throwsIOException { the //request received from client *Socket socket =serversocket.accept (); $ Panax Notoginseng //the input stream is used to receive data transmitted by the client. -InputStream in =Socket.getinputstream (); theInputStreamReader reader =NewInputStreamReader (in); +BufferedReader br =NewBufferedReader (reader); AString line =NULL; the while(line = Br.readline ())! =NULL) { + System.out.println (line); - //according to the HTTP protocol, a blank line is separated between the request header and the request body $ if("". Equals (line)) { $ Break; - } - } the - //The output stream is used to send a response message to the client, in accordance with the HTTP protocol formatWuyiOutputStream out =Socket.getoutputstream (); theOutputStreamWriter writer =NewOutputStreamWriter (out); -BufferedWriter BW =NewBufferedWriter (writer); WuBw.write ("http/1.1 ok\n"); -Bw.write ("content-type:text/html; Charset=utf-8\n "); AboutBw.write ("\ n"); $Bw.write ("); -Bw.write ("); -Bw.write ("<title>"); -Bw.write ("BIO Http Server"); ABw.write ("</title>"); +Bw.write ("); theBw.write ("<body>"); -Bw.write ("); $Bw.write ("</body>"); theBw.write ("); the the //You must not call the Close method until the request read and response writes have been processed, and closing the input stream will also cause the output stream to be unavailable the bw.close (); - writer.close (); in out.close (); the br.close (); the reader.close (); About in.close (); the socket.close (); the } the + Public Static voidMain (string[] args) { -Bioserver Server =NewBioserver ("127.0.0.1", 8080); the Try {Bayi Server.startlisten (); the}Catch(IOException e) { the e.printstacktrace (); - } - } the}
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