Java 实例 - 获取 URL 响应头信息
Java 教程
· 2019-02-11 22:13:19
以下实例演示了如何获取指定 URL 的响应头信息：
Main.java 文件
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;
import java.util.Set;
public class Main {
public static void main(String[] args) throws IOException{
URL url = new URL("http://www.codercto.com");
URLConnection conn = url.openConnection();
Map headers = conn.getHeaderFields();
Set<String> keys = headers.keySet();
for( String key : keys ){
String val = conn.getHeaderField(key);
System.out.println(key+" "+val);
}
System.out.println( conn.getLastModified() );
}
}
以上代码运行输出结果为：
Transfer-Encoding chunked null HTTP/1.1 200 OK Server Tengine/1.3.0 Connection keep-alive Vary Cookie Date Mon, 04 May 2015 03:54:05 GMT X-Pingback http://www.codercto.com/xmlrpc.php X-Powered-By PHP/5.3.15 Content-Type text/html; charset=UTF-8
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Algorithms for Image Processing and Computer Vision
Parker, J. R. / 2010-12 / 687.00元
A cookbook of algorithms for common image processing applications Thanks to advances in computer hardware and software, algorithms have been developed that support sophisticated image processing with......一起来看看 《Algorithms for Image Processing and Computer Vision》 这本书的介绍吧!
