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package coreservlets; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; /** Creates a table showing the current value of each * of the standard CGI variables. * <P> * Taken from Core Servlets and JavaServer Pages * from Prentice Hall and Sun Microsystems Press, * http://www.coreservlets.com/. * © 2000 Marty Hall; may be freely used or adapted. */ public class ShowCGIVariables extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String[][] variables = { { "AUTH_TYPE", request.getAuthType() }, { "CONTENT_LENGTH", String.valueOf(request.getContentLength()) }, { "CONTENT_TYPE", request.getContentType() }, { "DOCUMENT_ROOT", getServletContext().getRealPath("/") }, { "PATH_INFO", request.getPathInfo() }, { "PATH_TRANSLATED", request.getPathTranslated() }, { "QUERY_STRING", request.getQueryString() }, { "REMOTE_ADDR", request.getRemoteAddr() }, { "REMOTE_HOST", request.getRemoteHost() }, { "REMOTE_USER", request.getRemoteUser() }, { "REQUEST_METHOD", request.getMethod() }, { "SCRIPT_NAME", request.getServletPath() }, { "SERVER_NAME", request.getServerName() }, { "SERVER_PORT", String.valueOf(request.getServerPort()) }, { "SERVER_PROTOCOL", request.getProtocol() }, { "SERVER_SOFTWARE", getServletContext().getServerInfo() } }; String title = "Servlet Example: Showing CGI Variables"; out.println(ServletUtilities.headWithTitle(title) + "<BODY BGCOLOR="#FDF5E6">n" + "<H1 ALIGN="CENTER">" + title + "</H1>n" + "<TABLE BORDER=1 ALIGN="CENTER">n" + "<TR BGCOLOR="#FFAD00">n" + "<TH>CGI Variable Name<TH>Value"); for(int i=0; i<variables.length; i++) { String varName = variables[0]; String varValue = variables[i][1]; if (varValue == null) varValue = "<I>Not specified</I>"; out.println("<TR><TD>" + varName + "<TD>" + varValue); } out.println("</TABLE></BODY></HTML>"); } /** POST and GET requests handled identically. */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } } 返回类别: 教程 上一教程: Apache+Servlet+Jsp环境设置（中） 下一教程: EJB系列教程之一(JBuilder4+IAS41+Vbj411基本设置) 您可以阅读与"jsp源码实例3（获取jsp各种参数）"相关的教程: · JSP源码实例3(获取JSP各种参数) · JSP源码实例2(获取表单参数) · jsp源码实例2（获取表单参数） · 获取JSP各种参数 · JSP源码实例4(搜索引擎) |
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