javaweb獲取客戶端信息

HttpServletRequest request = ServletActionContext.getRequest();
System.out.println("瀏覽器基本信息："+request.getHeader("user-agent"));
System.out.println("客戶端系統名稱："+System.getProperty("os.name"));
System.out.println("客戶端系統版本："+System.getProperty("os.version"));
System.out.println("客戶端操作系統位數："+System.getProperty("os.arch"));
System.out.println("HTTP協議版本："+request.getProtocol());
System.out.println("請求編碼格式："+request.getCharacterEncoding());
System.out.println("Accept："+request.getHeader("Accept"));
System.out.println("Accept-語言："+request.getHeader("Accept-Language"));
System.out.println("Accept-編碼："+request.getHeader("Accept-Encoding"));
System.out.println("Connection："+request.getHeader("Connection"));
System.out.println("Cookie："+request.getHeader("Cookie"));
System.out.println("客戶端發出請求時的完整URL"+request.getRequestURL());
System.out.println("請求行中的資源名部分"+request.getRequestURI());
System.out.println("請求行中的參數部分"+request.getRemoteAddr());
System.out.println("客戶機所使用的網絡端口號"+request.getRemotePort());
System.out.println("WEB服務器的IP地址"+request.getLocalAddr());
System.out.println("WEB服務器的主機名"+request.getLocalName());
System.out.println("客戶機請求方式"+request.getMethod());
System.out.println("請求的文件的路徑"+request.getServerName());
System.out.println("請求體的數據流"+request.getReader());
BufferedReader br=request.getReader();
String res = "";
while ((res = br.readLine()) != null) {
   System.out.println("request body:" + res);
}
System.out.println("請求所使用的協議名稱"+request.getProtocol());
System.out.println("請求中所有參數的名字"+request.getParameterNames());
Enumeration enumNames= request.getParameterNames();
while (enumNames.hasMoreElements()) {
      String key = (String) enumNames.nextElement();
      System.out.println("參數名稱："+key);
}