📄 showcgivaiablesservlet.java
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package sourcecodegenproj;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class ShowCGIVaiablesServlet 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 = "显示CGI变量";
out.println(
"<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[i][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>");
}
public void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
doGet(request, response);
}
}
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