看一下这个 filter 为什么有错误

lingfeng892 2014-06-13 02:07:59

一个利用 cookie 实现自动登录功能，也不知道写的对不对，但是部署时就有错误，下面分别是 web.xml 各 filter.java、不有错误信息：
web.xml

 <servlet-mapping>

    <servlet-name>HostelServlet</servlet-name>

    <url-pattern>/HostelServlet</url-pattern>

  </servlet-mapping>

  <filter>

    <!-- <display-name>LoginFilter</display-name> -->

    <filter-name>LoginFilter</filter-name>

    <filter-class>com.student.web.filter.LoginFilter</filter-class>

  </filter>

  <filter-mapping>

    <filter-name>LoginFilter</filter-name>

    <url-pattern>/jsps/main.jsp</url-pattern>

  </filter-mapping>

  <filter-mapping>

    <filter-name>LoginFilter</filter-name>

    <servlet-name>HosteServlet</servlet-name>

  </filter-mapping>

  <filter-mapping>

    <filter-name>LoginFilter</filter-name>

    <servlet-name>UserInfoServlet</servlet-name>

  </filter-mapping>

filter.java

package com.student.web.filter;



import java.io.IOException;

import java.lang.reflect.InvocationTargetException;

import java.util.LinkedHashMap;

import java.util.Map;



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.Cookie;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



import org.apache.commons.beanutils.BeanUtils;



import com.student.user.domain.User;

import com.student.user.service.UserService;





@WebFilter(

		urlPatterns = { "/jsps/main.jsp" }, 

		servletNames = { 

				"HostelServlet", 

				"UserInfoServlet", 

		})

public class LoginFilter implements Filter {



	public void destroy() {

	}



	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

		chain.doFilter(request, response);

		/*

		 * 1、取得 session 中数据判断用户有没有登录

		 *    如果 session 中有数据说明用户已经登录，如果为 null 说明没有登录

		 * 2、如果没登录，取得 cookie 中数据,如果 cookie 为 null 转到登录页面，

		 *    如果不为空，用 cookie 中的用户名和密码查询数据库，把查询出的数

		 *    据保存到 session 中，

		 * 3、 session 中有数据后放行

		 */

		

		//把 ServletRequest 对象转成 HttpServletRequest 对象

		HttpServletRequest req = (HttpServletRequest) request;

		HttpServletResponse resp = (HttpServletResponse) response;

		

		User user = (User) req.getSession().getAttribute("sessionUser");

		

		if(user == null){

			

			Cookie[] cookie = req.getCookies();

			

			if(cookie == null){

				req.getRequestDispatcher("/jsps/user/login.jsp").forward(req, resp);

			}else{

				

				UserService userService = new UserService();

				Map<String, String> map = new LinkedHashMap<String, String>();

				

				for(Cookie c : cookie){

					if(c.getName() == "cookieUsername" || c.getName() == "cookiePassword"){

						map.put(c.getName(), c.getValue());

					}

				}

				

				try {

					BeanUtils.populate(user, map);   //封装数据

				} catch (IllegalAccessException e) {

					throw new RuntimeException();

				} catch (InvocationTargetException e) {

					throw new RuntimeException();

				}

				

				req.getSession().setAttribute("sessionUser", userService.userLoginService(user));   

				

			}

		}else{

			chain.doFilter(request, response);    //放行

		}

	}



	public void init(FilterConfig fConfig) throws ServletException {

	}



}

错误信息：

六月 13, 2014 2:00:10 下午 com.sun.faces.spi.InjectionProviderFactory createInstance

信息: JSF1048：有 PostConstruct/PreDestroy 注释。标有这些注释的 ManagedBeans 方法将表示注释已处理。

六月 13, 2014 2:00:10 下午 org.apache.catalina.core.StandardContext filterStart

严重: Exception starting filter LoginFilter

java.lang.ClassNotFoundException: com.student.web.filter.LoginFilter

	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)

	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)

	at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)

	at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)

	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)

	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)

	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)

	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4656)

	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5312)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

	at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3926)

	at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1271)

	at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1440)

	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:301)

	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)

	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)

	at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1374)

	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.run(ContainerBase.java:1519)

	at java.lang.Thread.run(Thread.java:744)

六月 13, 2014 2:00:10 下午 org.apache.catalina.core.StandardContext startInternal

严重: Error filterStart

六月 13, 2014 2:00:10 下午 org.apache.catalina.core.StandardContext startInternal

严重: Context [/students] startup failed due to previous errors

六月 13, 2014 2:00:10 下午 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks

严重: The web application [/students] created a ThreadLocal with key of type [com.sun.faces.util.Util$1] (value [com.sun.faces.util.Util$1@64d5eca6]) and a value of type [java.util.HashMap] (value [{com.sun.faces.patternCache={ = }}]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.

六月 13, 2014 2:00:10 下午 org.apache.catalina.core.StandardContext reload