out.println("Remote User: " + request.getRemoteUser());
out.println("Request URI: " + request.getRequestURI());
out.println("Context Path: " + request.getContextPath());
out.println("Servlet Path: " + request.getServletPath());
out.println("Path Info: " + request.getPathInfo());
out.println("Path Trans: " + request.getPathTranslated());
out.println("Query String: " + request.getQueryString());
out.println();
HttpSession session = request.getSession();
out.println("Requested Session Id: " +
request.getRequestedSessionId());
out.println("Current Session Id: " + session.getId());
out.println("Session Created Time: " + session.getCreationTime());
out.println("Session Last Accessed Time: " +session.getLastAccessedTime());
out.println("Session Max Inactive Interval Seconds: " + session.getMaxInactiveInterval());
out.println();
Enumeration names = session.getAttributeNames();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
out.println(" " + name + " = " + session.getAttribute(name));
}
}
}
编程技巧说明：
程序输出Init Parameters(初始化参数)、Attribute names in this request、Parameter names in this request、Headers in this request、Cookies in this request 和 Session Information等信息。
方法getRequestURI返回的对象URI 是作为URL 的一部分，是去掉URL 中用于指定机器的那部分；方法getPathInfo 返回的字符串是客户向Servlet 传送的各种选项，这些选项是跟在Servlet 的URL 之后的，方法getPathTranslated 返回的字符串是Servlet 的自己的绝对路径名，SnoopServlet.class 文件位置是C:jswdk-1.0.1examplesWEB-INFservletsSnoopServlet.class，则方法getPathTranslated 返回的字符串值就是它。
在 浏览器中输入如下的地址：
http://localhost:8080/examples/servlet/SnoopServlet
则会输出结果。