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

Question

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urlfilterjavaaction

Answer 1

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

Answer 2

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

Answer 3

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。

Answer 4

如果是两个呢？需要过滤啷个jsp页面（比如说a.jsp和b.jsp）

Answer 5

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);

Answer 6

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！！！

Answer 7

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