登录过滤器被重定向URL中，但视图页面显示“该网页有重定向循环”
问题描述：
这里的问题开始，我得到异常当Eclipse重新加载方面登录过滤器被重定向URL中，但视图页面显示“该网页有重定向循环”
java.lang.NullPointerException
at org.richfaces.application.ServiceTracker.release(ServiceTracker.java:100)
at org.richfaces.application.InitializationListener.onStop(InitializationListener.java:144)
at org.richfaces.application.InitializationListener.processEvent(InitializationListener.java:154)
at javax.faces.event.SystemEvent.processListener(SystemEvent.java:106)
at com.sun.faces.application.ApplicationImpl.processListeners(ApplicationImpl.java:2168)
at com.sun.faces.application.ApplicationImpl.invokeListenersFor(ApplicationImpl.java:2144)
at com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:302)
at com.sun.faces.config.ConfigureListener.contextDestroyed(ConfigureListener.java:332)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4980)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5626)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3947)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:426)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1345)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1519)
at java.lang.Thread.run(Unknown Source)
我的web.xml在这里
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>JsfEaxmples</display-name>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_REFRESH_PERIOD</param-name>
<param-value>1</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.SEPARATOR_CHAR</param-name>
<param-value>-</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.skin</param-name>
<param-value>classic</param-value>
</context-param>
<context-param>
<param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>facelets.RECREATE_VALUE_EXPRESSION_ON_BUILD_BEFORE_RESTORE</param-name>
<param-value>true</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>resources.application</param-value>
</context-param>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<filter>
<filter-name>sessionfilter</filter-name>
<filter-class>com.invoice.sessionfilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sessionfilter</filter-name>
<url-pattern>/Jsf Invoice System/*</url-pattern>
</filter-mapping>
</web-app>
我无法理解问题出在我的web.xml或过滤器中。我的过滤器是在这里
package com.invoice;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* Servlet Filter implementation class sessionfilter
*/
public class sessionfilter implements Filter {
String uname;
/**
* Default constructor.
*/
public sessionfilter() {
// TODO Auto-generated constructor stub
}
/**
* @see Filter#destroy()
*/
public void destroy() {
// TODO Auto-generated method stub
}
/**
* @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
// place your code here
// pass the request along the filter chain
HttpServletResponse res = (HttpServletResponse) response;
HttpServletRequest req = (HttpServletRequest) request;
login b=(login)req.getSession().getAttribute("login");
String url= req.getContextPath() +"/Login.xhtml";
if(req.getRequestURI().equals(url))
{
if(b!=null && b.isLoggedIn())
{
res.sendRedirect(req.getContextPath()+"/Jsf Invoice System/invoiceinfo.xhtml");
}
else
{
// res.sendRedirect(req.getContextPath()+"/Jsf Invoice System/Login.xhtml");
chain.doFilter(request, response);
}
}
else
{
if(b!=null && b.isLoggedIn())
{
chain.doFilter(request, response);
}
else
{
res.sendRedirect(req.getContextPath()+"/Jsf Invoice System/Login.xhtml");
}
}
}
/**
* @see Filter#init(FilterConfig)
*/
public void init(FilterConfig fConfig) throws ServletException {
// TODO Auto-generated method stub
}
}
我应该改变我的URL模式完全我没有想法如何着手
我的登录bean类是
package com.invoice;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;
@SessionScoped
public class login {
String username,userpassword,errormess,navipg;
boolean isLoggedIn;
public boolean isLoggedIn() {
return isLoggedIn;
}
public void setLoggedIn(boolean isLoggedIn) {
this.isLoggedIn = isLoggedIn;
}
public String getNavipg() {
return navipg;
}
public void setNavipg(String navipg) {
this.navipg = navipg;
}
public String getErrormess() {
return errormess;
}
public void setErrormess(String errormess) {
this.errormess = errormess;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUserpassword() {
return userpassword;
}
public void setUserpassword(String userpassword) {
this.userpassword = userpassword;
}
public String navigate()
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","invoice","google");
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery("select username,password from usertable where username='"+username+"' and password='"+userpassword+"' ");
if(rs.next())
{
setErrormess("");
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put("uname",this.username);
navipg="invoiceinfo";
setLoggedIn(true);
}
else
{
setErrormess("Invalid Login credentials");
username="";
navipg="Login";
setLoggedIn(false);
}
}
catch(Exception e)
{
e.printStackTrace();
}
return navipg;
}
public String logout()
{
FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
setLoggedIn(false);
return "Login";
}
}
但我调试，并检查它实际上执行不在这里输入
String url="/Login.xhtml";
if(req.getRequestURI().equals(url))
行号50在过滤器没有得到执行我什至变编这样
String url="/Jsf Invoice System/Login.xhtml";
if(req.getRequestURI().equals(url))
请帮帮我，给了这个问题