📄 supersonly.java
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import javax.servlet.*;import javax.servlet.http.*;import java.io.*;public class SupersOnly extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { PrintWriter out = response.getWriter(); String user = request.getRemoteUser(); out.println("<html><head><style>"); out.println("body {background-color:#FFFFFF;color:#000000;font-family:verdana;font-size:10pt;}"); out.println("</style></head>"); if (user != null) { if (request.isUserInRole("supervisor")) out.println("<BODY><H3>Welcome, " + user + ", you are a supervisor!</H3>"); else out.println("<BODY><H3>Sorry, " + user + ", but only supervisors can see the message.</H3>"); out.println("</BODY>"); } out.println("</HTML>"); } // of doGet}⌨️ 快捷键说明
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