亚洲精品中文字幕无乱码_久久亚洲精品无码AV大片_最新国产免费Av网址_国产精品3级片

java語言

JAVA如何獲取HTTP請求頭

時間:2024-10-22 11:06:41 java語言 我要投稿
  • 相關推薦

JAVA如何獲取HTTP請求頭

  在利用Java網(wǎng)絡編程時,常常需要獲取HTTP請求頭,那么JAVA如何獲取HTTP請求頭呢?下面小編為大家介紹了JAVA獲取HTTP請求頭的方法,希望能幫到大家!

  在利用Java網(wǎng)絡編程時,利用Java獲取HTTP Request 和 Response頭字段,可以利用Java語言根據(jù)需要添加自定義的HTTP頭字段,而不必拘泥于標準HTTP定義的頭字段。

  代碼如下:

  public class TestURL {

  public static void main(String[] args) {

  String destURLStr= "http://www.baidu.com";

  URL destURL = null;

  URLConnection urlCon = null;

  HttpURLConnection httpUrlCon= null;

  String readResFile = "C:/Users/zhoujw/Desktop/readResFile.html";

  BufferedWriter bw = null;

  try {

  bw = new BufferedWriter(new FileWriter(readResFile));

  destURL = new URL(destURLStr);

  urlCon = destURL.openConnection();

  httpUrlCon = (HttpURLConnection)urlCon;

  //set request property

  httpUrlCon.setRequestProperty("Accept-Encoding", "gzip,deflate,sdch");

  //可根據(jù)需要添加自定義請求頭

  httpUrlCon.setRequestProperty("Test Header1", "test1");

  httpUrlCon.setRequestProperty("Test Header2", "test2");

  httpUrlCon.connect();

  BufferedReader br = new BufferedReader(new InputStreamReader(httpUrlCon.getInputStream(), "gbk"));

  String webpage = null;

  while((( webpage = br.readLine()) != null))

  {

  //    System.out.println(webpage);

  bw.write(webpage);

  bw.flush();

  }

  //debug

  System.out.println("Self Define Headers:");

  System.out.println(" Test Header1: " + httpUrlCon.getRequestProperty("Test Header1"));

  System.out.println(" Test Header2: " + httpUrlCon.getRequestProperty("Test Header2"));

  System.out.println();

  //echo request property

  echoRequestHeaders(httpUrlCon);

  //echo response property

  echoResponseHeaders(httpUrlCon);

  } catch (MalformedURLException e) {

  e.printStackTrace();

  } catch (IOException e) {

  e.printStackTrace();

  }

  }

  public static void echoRequestHeaders(HttpURLConnection httpUrlCon){

  System.out.println("Request Headers:");

  System.out.println(" " + httpUrlCon.getRequestMethod() + " / " + " HTTP/1.1");

  System.out.println(" Host: " + httpUrlCon.getRequestProperty("Host"));

  System.out.println(" Connection: " + httpUrlCon.getRequestProperty("Connection"));

  System.out.println(" Accept: " + httpUrlCon.getRequestProperty("Accept"));

  System.out.println(" User-Agent: " + httpUrlCon.getRequestProperty("User-Agent"));

  System.out.println(" Accept-Encoding: " + httpUrlCon.getRequestProperty("Accept-Encoding"));

  System.out.println(" Accept-Language: " + httpUrlCon.getRequestProperty("Accept-Language"));

  System.out.println(" Cookie: " + httpUrlCon.getRequestProperty("Cookie"));

  System.out.println(" Connection: " + httpUrlCon.getHeaderField("Connection"));//利用另一種讀取HTTP頭字段

  System.out.println();

  }

  public static void echoResponseHeaders(HttpURLConnection httpUrlCon) throws IOException{

  System.out.println("Response Headers:");

  System.out.println(" " + "HTTP/1.1 " + httpUrlCon.getResponseCode() + " " + httpUrlCon.getResponseMessage());

  System.out.println(" status: " + httpUrlCon.getResponseCode() + " " + httpUrlCon.getResponseMessage());

  System.out.println(" content-encoding: " + httpUrlCon.getContentEncoding());

  System.out.println(" content-length : " + httpUrlCon.getContentLength());

  System.out.println(" content-type: " + httpUrlCon.getContentType());

  System.out.println(" Date: " + httpUrlCon.getDate());

  System.out.println(" ConnectTimeout: " + httpUrlCon.getConnectTimeout());

  System.out.println(" expires: " + httpUrlCon.getExpiration());

  System.out.println(" content-type: " + httpUrlCon.getHeaderField("content-type"));//利用另一種讀取HTTP頭字段

  System.out.println();

  }

  }

  運行結果:

  Self Define Headers:

  Test Header1: test1

  Test Header2: test2

  Request Headers:

  GET / HTTP/1.1

  Host: www.baidu.com

  Connection: keep-alive

  Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2

  User-Agent: Java/1.6.0_20

  Accept-Encoding: gzip,deflate,sdch

  Accept-Language: null

  Cookie: null

  Connection: Keep-Alive

  http://www.baidu.com

  Response Headers:

  HTTP/1.1 200 OK

  status: 200 OK

  content-encoding: gzip

  content-length : -1

  content-type: text/html; charset=utf-8

  Date: 1427817028000

  ConnectTimeout: 0

  expires: 1427817001000

  content-type: text/html; charset=utf-8

【JAVA如何獲取HTTP請求頭】相關文章:

關于java實現(xiàn)http請求工具類示例09-09

Java中如何獲取Spring中配置的bean09-14

PHP中Http協(xié)議post請求參數(shù)10-06

Java獲取UTC時間的方法08-09

Java編程中獲取路徑的方法09-06

PHP如何獲取表單07-27

java是如何用遞歸獲取一個目錄下的所有文件路徑10-23

Java面試題如何通過反射獲取和設置對象私有字段的值09-13

如何使用java10-14

java如何構造09-21