每次调用“Restricted”文件夹中的文件时，我都会调用这个 servlet 过滤器 servlet。
/*
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package com.shadibandhan.ControllerLayer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.StringTokenizer;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
*
* @author MUDASSIR
*/
public class SessionFilter implements Filter {
private ArrayList<String> urlList;
@Override
public void init(FilterConfig config) throws ServletException {
System.out.println("****************************************");
System.out.println("***Session Filter Servlet initialized***");
System.out.println("****************************************");
String urls = config.getInitParameter("avoid-urls");
System.out.println("The urls to avoid are = " + urls);
StringTokenizer token = new StringTokenizer(urls, ",");
urlList = new ArrayList<String>();
while (token.hasMoreTokens()) {
urlList.add(token.nextToken());
}
}
@Override
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
System.out.println("This is the doFilter method");
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
String servletPath = request.getServletPath();
String contextPath = request.getContextPath();
String remoteHost = request.getRemoteHost();
String url = contextPath + servletPath;
System.out.println("-----------------> Servlet path is = " + servletPath);
System.out.println("-----------------> Context path is " + contextPath);
System.out.println("-----------------> URL is " + url);
System.out.println("-----------------> Remote Host is " + remoteHost);
boolean allowedRequest = false;
if (urlList.contains(servletPath)) {
allowedRequest = true;
}
if (!allowedRequest) {
HttpSession session = request.getSession(false);
if (null == session) {
System.out.println("Session is not present");
response.sendRedirect(contextPath);
return;
}
if (null != session) {
//String loggedIn = (String) session.getAttribute("sb_logged_in");
System.out.println("Session is present");
System.out.println("\nSession no. is = " + session.getId());
if (session.getAttribute("logged-in") == "true") {
System.out.println("Session logged-in attribute is true, " + session.getAttribute("sessionUsername") + " is logged in.");
RequestDispatcher dispatcher = request.getRequestDispatcher(servletPath);
dispatcher.forward(request, response);
} else {
System.out.println("Session logged-in attribute is not true");
response.sendRedirect(contextPath);
return;
}
}
}
chain.doFilter(req, res);
}
@Override
public void destroy() {
}
}
当用户登录时，后台 bean 中的已登录属性设置为 true。现在，我希望当用户尝试访问具有用户名和密码字段的表单的“index.xhtml”页面时，他在登录时被重定向到 home.xhtml 页面，否则不会。
还请查看我的 web.xml 文件，以使 faces servlet 与我的 url 一起工作。
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Production</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>
<servlet-name>SbServlet</servlet-name>
<servlet-class>com.shadibandhan.ControllerLayer.SbServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>SbServlet</servlet-name>
<url-pattern>/SbServlet</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
<listener>
<listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>
<filter>
<filter-name>SessionFilter</filter-name>
<filter-class>
com.shadibandhan.ControllerLayer.SessionFilter
</filter-class>
<init-param>
<param-name>avoid-urls</param-name>
<param-value></param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SessionFilter</filter-name>
<url-pattern>/com.shadibandhan.Restricted/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>SessionFilter</filter-name>
<url-pattern>/index.xhtml</url-pattern>
</filter-mapping>
</web-app>
像文件一样仅在路径像时打开
- 本地主机：8080/ShadiBandhan/faces/index.xhtml 或
- 本地主机：8080/ShadiBandhan/faces/com.shadibandhan.Restricted/home.xhtml
并不是
- 本地主机：8080/ShadiBandhan/index.xhtml 或
- 本地主机：8080/ShadiBandhan/com.shadibandhan.Restricted/home.xhtml
有什么建议么 ？