| commit | author | age | ||
| 22f5de | 1 | package de.uhilger.wbx.web; |
| U | 2 | |
| 3 | import java.io.IOException; | |
| 4 | import java.io.OutputStream; | |
| 5 | import java.security.Principal; | |
| 6 | import java.util.logging.Logger; | |
| 7 | import javax.servlet.ServletException; | |
| 8 | import javax.servlet.ServletOutputStream; | |
| 9 | import javax.servlet.http.HttpServletRequest; | |
| 10 | import javax.servlet.http.HttpServletResponse; | |
| 11 | import org.apache.catalina.servlets.DefaultServlet; | |
| 12 | ||
| 13 | /** | |
| 14 | * | |
| 15 | */ | |
| 16 | public class ViewServlet extends DefaultServlet { | |
| 17 | ||
| 18 | private static final Logger logger = Logger.getLogger(ViewServlet.class.getName()); | |
| 19 | ||
| 20 | /** | |
| 21 | * Handles the HTTP <code>GET</code> method. | |
| 22 | * | |
| 23 | * @param request servlet request | |
| 24 | * @param response servlet response | |
| 25 | * @throws ServletException if a servlet-specific error occurs | |
| 26 | * @throws IOException if an I/O error occurs | |
| 27 | */ | |
| 28 | @Override | |
| 29 | protected void doGet(HttpServletRequest request, HttpServletResponse response) | |
| 30 | throws ServletException, IOException { | |
| 31 | /* | |
| 32 | ServletOutputStream out = response.getOutputStream(); | |
| 33 | out.print("<!DOCTYPE html><html><head><title>Testausgabe</title></head><body>"); | |
| 34 | super.doGet(request, response); | |
| 35 | out.print("</body></html>"); | |
| 36 | */ | |
| 37 | ||
| 38 | String userName = getUserName(request); | |
| 39 | String requestURLStr = request.getRequestURL().toString(); | |
| 40 | String contextPath = request.getContextPath(); | |
| 41 | ||
| 42 | ServletOutputStream out = response.getOutputStream(); | |
| 43 | out.print("<!DOCTYPE html><html><head><title>Testausgabe</title></head><body>"); | |
| 44 | out.print(getHtml("userName", userName)); | |
| 45 | out.print(getHtml("contextPath", contextPath)); | |
| 46 | out.print(getHtml("requestURL", requestURLStr)); | |
| 47 | out.print(getHtml("urlUser", getUrlUser(out, requestURLStr, contextPath, userName))); | |
| 48 | out.print("</body></html>"); | |
| 49 | } | |
| 50 | ||
| 51 | private String getUrlUser(ServletOutputStream out, String requestUrlStr, String contextPath, String userName) throws IOException { | |
| 52 | String result = "urlUser nicht ermittelbar"; | |
| 53 | if(contextPath != null && requestUrlStr != null && userName != null) { | |
| 54 | int start = requestUrlStr.indexOf(contextPath); | |
| 55 | out.print("<p>start: " + start + "</p>"); | |
| 56 | out.print("<p>userName.length: " + userName.length() + "</p>"); | |
| 57 | out.print("<p>contextPath.length(): " + contextPath.length() + "</p>"); | |
| 58 | out.print("<p>requestUrlStr.length(): " + requestUrlStr.length() + "</p>"); | |
| 59 | start += contextPath.length(); | |
| 60 | start++; | |
| 61 | out.print("<p>start: " + start + "</p>"); | |
| 62 | int end = start + userName.length(); | |
| 63 | try { | |
| 64 | result = requestUrlStr.substring(start, end); | |
| 65 | } catch(Exception ex) { | |
| 66 | result = ex.getMessage(); | |
| 67 | } | |
| 68 | } | |
| 69 | return result; | |
| 70 | } | |
| 71 | ||
| 72 | private String getHtml(String label, String theVal) { | |
| 73 | StringBuffer buf = new StringBuffer(); | |
| 74 | buf.append("<p>"); | |
| 75 | buf.append(label); | |
| 76 | buf.append(": "); | |
| 77 | if(theVal == null) { | |
| 78 | buf.append("null"); | |
| 79 | } else { | |
| 80 | buf.append(theVal); | |
| 81 | } | |
| 82 | buf.append("</p>"); | |
| 83 | return buf.toString(); | |
| 84 | } | |
| 85 | ||
| 86 | private String getUserName(HttpServletRequest hr) { | |
| 87 | String userName = null; | |
| 88 | Object p = hr.getUserPrincipal(); | |
| 89 | if (p instanceof Principal) { | |
| 90 | userName = ((Principal) p).getName(); | |
| 91 | } | |
| 92 | return userName; | |
| 93 | } | |
| 94 | ||
| 95 | /** | |
| 96 | * Returns a short description of the servlet. | |
| 97 | * | |
| 98 | * @return a String containing servlet description | |
| 99 | */ | |
| 100 | @Override | |
| 101 | public String getServletInfo() { | |
| 102 | return "Short description"; | |
| 103 | }// </editor-fold> | |
| 104 | ||
| 105 | } | |
