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import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.net.URLConnection; public class URLConnectionTest { public URLConnectionTest() throws IOException { int n = 1; String name = "http://www.youkuaiyun.com"; URL url = new URL(name);// 构造一个URL BufferedReader br = new BufferedReader(new InputStreamReader( url.openStream())); String str = null; StringBuilder builder=new StringBuilder(); while ((str = br.readLine()) != null) { if (n++%10==0) { builder.append(str); builder.append("\n"); } } System.out.println(builder); URLConnection connect = url.openConnection(); connect.connect(); String key; n = 1; while ((key = connect.getHeaderFieldKey(n)) != null) { System.out.println(key + "==> " +connect.getHeaderField(n)); n++; } } public static void main(String[] args) throws IOException { new URLConnectionTest(); } }