背景：因為想寫一個測試tomcat連接的程序，就試試自已去構造Http請求。找了一下發現Apache下有一個比較成熟的輪子HttpComponets.
使用庫：Apache Http Client
HttpClient是一個代碼級的Http客戶端工具,可以使用它模擬瀏覽器向Http服務器發送請求。
其中HttpClient是HttpComponents項目其中的一部份，HttpComponents簡稱為hc.
見http://hc.apache.org/
使用HttpClient還需要HttpCore.這里其中包括Http請求與Http響應的代碼封裝。
現在導入兩個jar包:
httpclient-4.0.jar
httpcore-4.0.jar
httpmime-4.0.jar
開始一個請求代碼如下:
- HttpClient httpClient = new DefaultHttpClient();
- //構造請求,如果想使用POST則new一個HttpPost
- HttpGet get = new HttpGet("http://www.iteye.com");
- HttpResponse response = httpClient.execute(get);
- //先從響應頭得到實體
- HttpEntity entity = response.getEntity();
- //得到實體輸入流
- InputStream inSm = entity.getContent();
- Scanner inScn = new Scanner(inSm);
- while(inScn.hasNextLine()){
- System.out.println(inScn.nextLine());
- }
- entity.consumeContent();
HttpClient httpClient = new DefaultHttpClient(); //構造請求,如果想使用POST則new一個HttpPost HttpGet get = new HttpGet("http://www.iteye.com"); HttpResponse response = httpClient.execute(get); //先從響應頭得到實體 HttpEntity entity = response.getEntity(); //得到實體輸入流 InputStream inSm = entity.getContent(); Scanner inScn = new Scanner(inSm); while(inScn.hasNextLine()){ System.out.println(inScn.nextLine()); } entity.consumeContent();
這個是在HC例子中有代碼作了少量的修改。
輸出:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" dir="ltr">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
- <title>JavaEye Java編程 Spring框架 AJAX技術 Agile敏捷軟件開發 ruby on rails實踐 - JavaEye做最棒的軟件開發交流社區</title>
- <meta name="description" content="Java編程,Spring Struts Webwork框架深入,XMLHTTP AJAX開發,Java Web開發,Java企業應用,Java設計模式,Java開源框架,Java應用服務器,Rich Client討論,Ruby編程,Ruby DSL開發,Ruby on rails實踐,JavaScript編程,敏捷軟件開發XP TDD,軟件配置管理,軟件測試,項目管理UML,數據庫,C#/.net C/C++ Erlang/FP PHP/Linux平臺,精通Hibernate" />
- <meta name="keywords" content="Java編程 Spring框架 AJAX技術 Agile敏捷軟件開發 ruby on rails實踐 JavaEye深度技術社區" />
- <link rel="shortcut icon" href="/images/favicon.ico" type="image/x-icon" />
- <link href="/rss" rel="alternate" title="JavaEye技術網站RSS頻道訂閱" type="application/rss+xml" />
- <link />
-
- </head>
-
- ...省略，證明以上代碼已經成功
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" dir="ltr"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <title>JavaEye Java編程 Spring框架 AJAX技術 Agile敏捷軟件開發 ruby on rails實踐 - JavaEye做最棒的軟件開發交流社區</title> <meta name="description" content="Java編程,Spring Struts Webwork框架深入,XMLHTTP AJAX開發,Java Web開發,Java企業應用,Java設計模式,Java開源框架,Java應用服務器,Rich Client討論,Ruby編程,Ruby DSL開發,Ruby on rails實踐,JavaScript編程,敏捷軟件開發XP TDD,軟件配置管理,軟件測試,項目管理UML,數據庫,C#/.net C/C++ Erlang/FP PHP/Linux平臺,精通Hibernate" /> <meta name="keywords" content="Java編程 Spring框架 AJAX技術 Agile敏捷軟件開發 ruby on rails實踐 JavaEye深度技術社區" /> <link rel="shortcut icon" href="/images/favicon.ico" type="image/x-icon" /> <link href="/rss" rel="alternate" title="JavaEye技術網站RSS頻道訂閱" type="application/rss+xml" /> <link media="screen" rel="stylesheet" type="text/css" /> </head> ...省略，證明以上代碼已經成功
當然這個只是大刀一小試。現在還離我的目標差一點點：
需要做個頭,我還不太清楚有什么頭可以使用，那樣我又寫了個程序看看IE的頭到底是怎樣子的，
沒有抓包程序，只好自已寫個程序：
- ServerSocket socketServer = new ServerSocket(10086);
- Socket client = socketServer.accept();
- InputStream inClient = client.getInputStream();
- Scanner inScn = new Scanner(inClient);
- while(inScn.hasNextLine()){
- System.out.println(inScn.nextLine());
- }
- inScn.close();
- client.close();
- socketServer.close();
ServerSocket socketServer = new ServerSocket(10086); Socket client = socketServer.accept(); InputStream inClient = client.getInputStream(); Scanner inScn = new Scanner(inClient); while(inScn.hasNextLine()){ System.out.println(inScn.nextLine()); } inScn.close(); client.close(); socketServer.close();
在IE地址欄上輸入:
http://locahost:10086/
點確定后可以得到程序輸出:
- GET / HTTP/1.1
- Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*
- Accept-Language: zh-CN
- User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; QQWubi 87; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)
- Accept-Encoding: gzip, deflate
- Host: localhost:10086
- Connection: Keep-Alive
GET / HTTP/1.1 Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */* Accept-Language: zh-CN User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; QQWubi 87; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0) Accept-Encoding: gzip, deflate Host: localhost:10086 Connection: Keep-Alive
分析請求包中這六個頭信息。可以參考以下文章：
http://zsxxsz.iteye.com/blog/568250
現在我使用HC模擬IE的請求，修改后代碼如下:
- HttpClient httpClient = new DefaultHttpClient();
- HttpGet get = new HttpGet("http://www.iteye.com");
-
- get.setHeader("Accept", "image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*");
- get.setHeader("Accept-Language","zh-CN");
- get.setHeader("User-Agent","Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; QQWubi 87; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)");
- get.setHeader("Accept-Encoding","gzip, deflate");
- get.setHeader("Host","you never be know");
- get.setHeader("Connection","Keep-Alive");
-
- HttpResponse response = httpClient.execute(get);