Hallo,
ich benutze Spring und habe eine JSP Seite implementiert, mit welcher ich gerne die url-parameter abfragen möchte. Das Projekt funktioniert sehr gut, nur das letzte, was ich eingetragen habe, funktioniert nicht. Wäre toll, wenn mir jemand helfen könnte.
Hier zunächst der Quellcode (mit der Änderung, die nicht funktioniert, in rot):
Hier die Fehlermeldung:
ich benutze Spring und habe eine JSP Seite implementiert, mit welcher ich gerne die url-parameter abfragen möchte. Das Projekt funktioniert sehr gut, nur das letzte, was ich eingetragen habe, funktioniert nicht. Wäre toll, wenn mir jemand helfen könnte.
Hier zunächst der Quellcode (mit der Änderung, die nicht funktioniert, in rot):
Code:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome!</title>
</head>
<body>
Dies ist die Startseite.<br/>
Auf diese Seite haben alle User Zugriff!<br/>
<br/>
<sec:authorize ifNotGranted="ROLE_ADMIN,ROLE_USER">
<u>Login</u><br/>
<br/>
<form action="${pageContext.request.contextPath}/j_spring_security_check" method="post">
Username <input type="text" name="j_username"><br/>
Password <input type="text" name="j_password"><br/>
<input type="submit" value="Login">
</form>
<br/>
</sec:authorize>
<%
if (request.getQueryString().equals("login_error=1")) {
out.print("Login failed!");
}
%>
<sec:authorize ifAllGranted="ROLE_USER" ifNotGranted="ROLE_ADMIN">
<font color="990000">Eingeloggt als User</font>
</sec:authorize>
<sec:authorize ifAllGranted="ROLE_ADMIN">
<font color="990000">Eingeloggt als Admin</font>
</sec:authorize>
<br/>
<br/>
<a href="user.html">Für User!</a><br/>
<a href="admin.html">Nur für Admins!</a>
<br/>
<sec:authorize ifAllGranted="ROLE_ADMIN">
<a href="admin2.html">Geheimer Link - Nur für Admins!</a>
</sec:authorize>
<sec:authorize ifAnyGranted="ROLE_USER,ROLE_ADMIN">
<p><a href="${pageContext.request.contextPath}/j_spring_security_logout">Logout</a>
</sec:authorize>
<br/><br/>
Request URI: <%= request.getRequestURI() %>
<br>
Request Parameter: <%= request.getParameterNames() %>
<br>
Request URL: <%= request.getRequestURL() %>
<br>
Request Header: <%= request.getHeader("login_error") %>
<br>
getQueryString Request: <%= request.getQueryString() %>
<br>
Request Protocol: <%= request.getProtocol() %>
<br>
Servlet path: <%= request.getServletPath() %>
<br>
Content length: <%= request.getContentLength() %>
<br>
Server name: <%= request.getServerName() %>
<br>
Server port: <%= request.getServerPort() %>
<br>
Remote user: <%= request.getRemoteUser() %>
<br>
Remote address: <%= request.getRemoteAddr() %>
<br>
Remote host: <%= request.getRemoteHost() %>
<br>
Authorization scheme: <%= request.getAuthType() %>
<br>
Locale: <%= request.getLocale() %>
</body>
</html>
Code:
org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 34 31: 32: <% 33: 34: if (request.getQueryString().equals("login_error=1")) { 35: out.print("Login failed!"); 36: } 37: Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:109) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:149) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) root cause java.lang.NullPointerException org.apache.jsp.index_jsp._jspService(index_jsp.java:97) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:109) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:149) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
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