From 22f5de9ee605ec60eefd36d1117b854e375a2d8e Mon Sep 17 00:00:00 2001
From: Ulrich <undisclosed>
Date: Fri, 03 Mar 2017 15:51:53 +0000
Subject: [PATCH] ViewServlet gebaut
---
src/de/uhilger/wbx/web/ViewServlet.java | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 105 insertions(+), 0 deletions(-)
diff --git a/src/de/uhilger/wbx/web/ViewServlet.java b/src/de/uhilger/wbx/web/ViewServlet.java
new file mode 100644
index 0000000..aa0d1f1
--- /dev/null
+++ b/src/de/uhilger/wbx/web/ViewServlet.java
@@ -0,0 +1,105 @@
+package de.uhilger.wbx.web;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.security.Principal;
+import java.util.logging.Logger;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.apache.catalina.servlets.DefaultServlet;
+
+/**
+ *
+ */
+public class ViewServlet extends DefaultServlet {
+
+ private static final Logger logger = Logger.getLogger(ViewServlet.class.getName());
+
+ /**
+ * Handles the HTTP <code>GET</code> method.
+ *
+ * @param request servlet request
+ * @param response servlet response
+ * @throws ServletException if a servlet-specific error occurs
+ * @throws IOException if an I/O error occurs
+ */
+ @Override
+ protected void doGet(HttpServletRequest request, HttpServletResponse response)
+ throws ServletException, IOException {
+ /*
+ ServletOutputStream out = response.getOutputStream();
+ out.print("<!DOCTYPE html><html><head><title>Testausgabe</title></head><body>");
+ super.doGet(request, response);
+ out.print("</body></html>");
+ */
+
+ String userName = getUserName(request);
+ String requestURLStr = request.getRequestURL().toString();
+ String contextPath = request.getContextPath();
+
+ ServletOutputStream out = response.getOutputStream();
+ out.print("<!DOCTYPE html><html><head><title>Testausgabe</title></head><body>");
+ out.print(getHtml("userName", userName));
+ out.print(getHtml("contextPath", contextPath));
+ out.print(getHtml("requestURL", requestURLStr));
+ out.print(getHtml("urlUser", getUrlUser(out, requestURLStr, contextPath, userName)));
+ out.print("</body></html>");
+ }
+
+ private String getUrlUser(ServletOutputStream out, String requestUrlStr, String contextPath, String userName) throws IOException {
+ String result = "urlUser nicht ermittelbar";
+ if(contextPath != null && requestUrlStr != null && userName != null) {
+ int start = requestUrlStr.indexOf(contextPath);
+ out.print("<p>start: " + start + "</p>");
+ out.print("<p>userName.length: " + userName.length() + "</p>");
+ out.print("<p>contextPath.length(): " + contextPath.length() + "</p>");
+ out.print("<p>requestUrlStr.length(): " + requestUrlStr.length() + "</p>");
+ start += contextPath.length();
+ start++;
+ out.print("<p>start: " + start + "</p>");
+ int end = start + userName.length();
+ try {
+ result = requestUrlStr.substring(start, end);
+ } catch(Exception ex) {
+ result = ex.getMessage();
+ }
+ }
+ return result;
+ }
+
+ private String getHtml(String label, String theVal) {
+ StringBuffer buf = new StringBuffer();
+ buf.append("<p>");
+ buf.append(label);
+ buf.append(": ");
+ if(theVal == null) {
+ buf.append("null");
+ } else {
+ buf.append(theVal);
+ }
+ buf.append("</p>");
+ return buf.toString();
+ }
+
+ private String getUserName(HttpServletRequest hr) {
+ String userName = null;
+ Object p = hr.getUserPrincipal();
+ if (p instanceof Principal) {
+ userName = ((Principal) p).getName();
+ }
+ return userName;
+ }
+
+ /**
+ * Returns a short description of the servlet.
+ *
+ * @return a String containing servlet description
+ */
+ @Override
+ public String getServletInfo() {
+ return "Short description";
+ }// </editor-fold>
+
+}
--
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