《Acme包中的以Post方式发送数据的例子.docVIP

作者：sonymusic email: sonymusic@ 日期：2001-5-11 13:55:13 package Acme; import .*; import java.io.*; import java.util.*; import java.text.*; /// A URLConnection that implements POST. // P // Some implementations of URLConnection, e.g. the one in Navigator 3.0, // do not support POST. This is a stripped-down version that does. // P // Note that it cant inherit from .URLConnection because that // class has no public constructors. Not all the standard URLConnection // methods are re-implemented here, just the ones necessary for posting. // P // This class is not needed in current browsers. // P // A HREF=/resources/classes/Acme/PostURLConnection.javaFetch the software./ABR // A HREF=/resources/classes/Acme.tar.gzFetch the entire Acme package./A public class PostURLConnection { private URL url; private boolean doInput = false; private boolean doOutput = true; private boolean useCaches = false; private Vector reqHeaderNames = new Vector(); private Vector reqHeaderValues = new Vector(); private Vector resHeaderNames = null; private Vector resHeaderValues = null; private Socket socket; private OutputStream out; private InputStream in; /// Constructs a POST URL connection to the specified URL. // @param url the specified URL public PostURLConnection( URL url ) { this.url = url; } private boolean connected = false; public void connect() throws IOException { if ( connected ) return; if ( ! useCaches ) setRequestProperty( Pragma, no-cache ); String protocol = url.getProtocol(); if ( ! protocol.equals( http ) ) throw new UnknownServiceException( unknown protocol ); String host = url.getHost(); int port = url.getPort(); if ( port == -1 ) port = 80; String file = url.getFile(); socket = new Socket( host, port ); out = socket.getOutputStream(); PrintStream pout = new PrintStream( out ); String method; if ( doOutput ) method = POST; else method = GET;