java 使用HttpURLConnection发送数据简单实例
java使用HttpURLConnection发送数据简单实例
每个HttpURLConnection实例都可用于生成单个请求,但是其他实例可以透明地共享连接到HTTP服务器的基础网络。请求后在HttpURLConnection的InputStream或OutputStream上调用close()方法可以释放与此实例关联的网络资源,但对共享的持久连接没有任何影响。如果在调用disconnect()时持久连接空闲,则可能关闭基础套接字。JAVA使用HttpURLConnection发送POST数据是依靠OutputStream流的形式发送
实现代码:
importjava.io.*; importjava.net.*; publicclassPostExample{ publicstaticvoidmain(String[]argv)throwsException{ URLurl=newURL("http://www.javacourses.com/cgi-bin/names.cgi"); HttpURLConnectionconnection=(HttpURLConnection)url.openConnection(); connection.setRequestMethod("POST"); connection.setDoOutput(true); PrintWriterout=newPrintWriter(connection.getOutputStream()); //encodethemessage Stringname="name="+URLEncoder.encode("QusayMahmoud","UTF-8"); Stringemail="email="+URLEncoder.encode("qmahmoud@javacourses.com","UTF-8"); //sendtheencodedmessage out.println(name+"&"+email); out.close(); BufferedReaderin =newBufferedReader(newInputStreamReader(connection.getInputStream())); Stringline; while((line=in.readLine())!=null){ System.out.println(line); } in.close(); } }
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