过滤器问题tomact已启动就报错

严重: Exception starting filter Filter
java.lang.ClassNotFoundException: com.hp.filter.Filter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:249)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:108)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3693)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2016-6-14 22:15:55 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2016-6-14 22:15:55 org.apache.catalina.core.StandardContext start
严重: Context [/web10] startup failed due to previous errors
1我的过滤器代码是：
package com.web.filter;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**

• 实现过滤器功能

• @author Administrator
  *
  */
  public class Filter implements javax.servlet.Filter {
  private FilterConfig config;

  @Override
  public void destroy() {
  // TODO Auto-generated method stub

  }

  @Override
  public void doFilter(ServletRequest request, ServletResponse response,
  FilterChain chain) throws IOException, ServletException {
  System.out.println("doFilter");
  // TODO Auto-generated method stub
  /**
  * 获取httprequest对象
  /
  HttpServletRequest httprequest = (HttpServletRequest) request;
  /*
  * 获取httpresponse对象
  /
  HttpServletResponse httpresponse = (HttpServletResponse) response;
  /*
  * 获取上下文参数
  /
  String noPat = config.getInitParameter("noPaths");
  /*
  * 分割字符
  /
  String[] str = noPat.split(";");
  /*
  * 循环遍历 分割的字符串
  /
  for (int i = 0; i < str.length; i++) {
  /*
  * 为空结束本次循环
  */
  if (str[i] != null && "".equals(str[i]))

          continue;
      /**
       * indexOf返回不为-1 放行
       */
      if (httprequest.getRequestURI().indexOf(str[i]) != -1) {
          chain.doFilter(request, response);
          return;
      }
  }
  
  /**
   * 获取session中的username(用户名)
   */
  String username = (String) httprequest.getSession().getAttribute(
          "username");
  /**
   * 用户名不为空 放行
   */
  if (username != null) {
      chain.doFilter(request, response);
  } 
  /**
   * 用户名为空  拦截并返回登录页面
   */
  else {
      httpresponse.sendRedirect("login.jsp");
  }
  

  }

  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
  // TODO Auto-generated method stub
  config = filterConfig;
  System.out.println("init******************");
  }

}
配置文件是：
<?xml version="1.0" encoding="UTF-8"?>
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_2_5.xsd">
<!-- Filter -->

Filter
com.hp.filter.Filter

noPaths
index.jsp;



Filter
.jsp;.html

<!-- IndexLoginServlet 登陆配置-->

IndexLoginServlet
com.web.servlet.IndexLoginServlet


IndexLoginServlet
/IndexLoginServlet

 <!-- Indext2RegisterServlet注册配置 -->

Indext2RegisterServlet
com.web.servlet.Indext2RegisterServlet


Indext2RegisterServlet
/Indext2RegisterServlet

index.jsp

http://bbs.csdn.net/topics/390566187

web.xml中过滤器的路径配置不对，试试这个
Filter
com.web.filter

Filter
com.web.filter.Filter

noPaths
index.jsp;



Filter
.jsp;.html

问题解决了
错误原因1、web.xml中的filter-class中路径错误
改正之后还是无法实现过滤功能，但是开启tomcat不会报错了
后来发现
错误原因2（我的web页面只有jsp和html）过滤所有页面是/*
不能写成*.jsp;*.html

现在问题是直接访问html页面时，登陆页面的图片都不会加载，但是css样式却可以加载