在线等 过滤器过滤url的问题 只想过滤一个url（jsp或者action）怎么设置

[dragon20121114]

如果我想只过滤某个页面（比如说a.jsp）,不过滤其他页面，该怎么配置？因为不需要过滤的url太多，不好一一配置，所以我需要只配置过滤的url，求解

下面是部分web.xml的配置

<filter>
		<!-- 设计过滤处理类，生成静态页面 -->
		<filter-name>loginFilter</filter-name>
		<filter-class>com.niit.filter.CheckLoginFilter</filter-class>

		<!-- 重定向的URL -->
		<init-param>
			<param-name>redirectURL</param-name>
			<param-value>/index.jsp</param-value>
		</init-param>

		<!-- 过滤的字段 -->
		<init-param>
			<param-name>checkSessionKey</param-name>
			<param-value>username</param-value>
		</init-param>

		<!-- 不需要过滤的url -->
		<init-param>
			<param-name>notCheckURLList</param-name>
			<param-value>/index.jsp</param-value>
		</init-param>

	</filter>

	<filter-mapping>
		<filter-name>loginFilter</filter-name>
		<url-pattern>*.jsp</url-pattern>
	</filter-mapping>

如果我想只过滤某个页面（比如说a.jsp）,不过滤其他页面，该怎么配置？因为不需要过滤的url太多，不好一一配置，所以我需要只配置过滤的url，求解

[dragon20121114]

如果是两个呢？需要过滤啷个jsp页面（比如说a.jsp和b.jsp）

[IMBA__小八]

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest req=(HttpServletRequest) request; String path = req.getServletPath(); if(path.endWith("/a.jsp")) //过滤的处理 else chain.doFilter(request, response);

[dragon20121114]

我想过滤 tijiaodingdan.jsp

其中过滤器如下：

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class IsLoginFilter implements Filter
{
	protected FilterConfig filterConfig = null;
	private String redirectURL = null;
	private List notCheckURLList = new ArrayList();
	private String username = null;

	public void destroy()
	{
		notCheckURLList.clear(); // 清楚list里面的所有元素
		System.out.println("过滤器销毁");
	}

	public void doFilter(ServletRequest servletRequest,
			ServletResponse servletResponse, FilterChain filterChain)
			throws IOException, ServletException
	{
		HttpServletRequest request = (HttpServletRequest) servletRequest;
		HttpServletResponse response = (HttpServletResponse) servletResponse;

		HttpSession session = request.getSession();
		if (username == null)
		{
			filterChain.doFilter(request, response);
			return;
		}
		if ((!checkRequestURIIntNotFilterList(request))
				&& session.getAttribute(username) == null)
		{
			response.sendRedirect(request.getContextPath() + redirectURL);
			return;
		}
		filterChain.doFilter(servletRequest, servletResponse);
	}

	private boolean checkRequestURIIntNotFilterList(HttpServletRequest request)
	{
		String uri = request.getServletPath()
				+ (request.getPathInfo() == null ? "" : request.getPathInfo());
		return notCheckURLList.contains(uri);
	}

	public void init(FilterConfig filterConfig) throws ServletException
	{
		this.filterConfig = filterConfig;
		redirectURL = filterConfig.getInitParameter("redirectURL");
		username = filterConfig.getInitParameter("checkSessionKey");

		String notCheckURLListStr = filterConfig
				.getInitParameter("notCheckURLList");

		if (notCheckURLListStr != null)
		{
			StringTokenizer st = new StringTokenizer(notCheckURLListStr, ";");
			notCheckURLList.clear();
			while (st.hasMoreTokens())
			{
				notCheckURLList.add(st.nextToken());
			}
		}
		// TODO Auto-generated method stub
		System.out.println("过滤器初始化");

	}

web.xml文件部分代码如下：

<filter>
		<filter-name>loginFilter</filter-name>
		<filter-class>com.niit.action.islogin.IsLoginFilter</filter-class>
		<init-param>
			<param-name>redirectURL</param-name>
			<param-value>/index.jsp</param-value>
		</init-param>
		<init-param>
			<param-name>checkSessionKey</param-name>
			<param-value>username</param-value>
		</init-param>

		<init-param>
			<param-name>notCheckURLList</param-name>
			<param-value>/index.jsp</param-value>
		</init-param>

	</filter>

	<filter-mapping>
		<filter-name>loginFilter</filter-name>
		<url-pattern>/jiayongdianqijsp/tijiaodingdan.jsp</url-pattern>
	</filter-mapping>

为什么总是过滤不了tijiaodingdan.jsp这个文件呢？？？？？？？？？我debug发现，程序没有进去到dofilter中去！！！

[IMBA__小八]

你过滤器的url就是获取tijiaodingdan.jsp这个路径，不是取到了吗。不懂你的意思

[a84992018]

<filter-mapping> <filter-name>loginFilter</filter-name> <url-pattern>a.jsp</url-pattern> </filter-mapping>

[a597926661]

引用 1 楼 a84992018 的回复:

<filter-mapping> <filter-name>loginFilter</filter-name> <url-pattern>a.jsp</url-pattern> </filter-mapping>

修改 <url-pattern>a.jsp</url-pattern>的值就行了

[安特矮油]

过滤器可以配置只拦截某个请求，当然你也可以在过滤器中判断该url是否需要你过滤的。

[zhouyusunquan]

引用 2 楼 a597926661 的回复:

引用 1 楼 a84992018 的回复:<filter-mapping> <filter-name>loginFilter</filter-name> <url-pattern>a.jsp</url-pattern> </filter-mapping> 修改 <url-pattern>a.jsp</url-pat……

如此即可