Java 实例 - 获取 URL 响应头信息

鲸鱼芽

于 2019-07-16 18:30:33 发布

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文章标签： http的header

本文链接：https://blog.youkuaiyun.com/weixin_43741902/article/details/96165003

版权

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.runoob.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.runoob.com/xmlrpc.php
X-Powered-By PHP/5.3.15
Content-Type text/html; charset=UTF-8