springmvc用filter 做拦截器还要在别的地方配置么
- Java code
package com.bolo.examples;import java.io.IOException;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 org.apache.commons.lang.StringUtils;import com.bolo.examples.base.entity.User;public class MyFilter implements Filter { private static final String FILTERED_REQUEST = "@@session_context_filtered_request"; private static final String[] INHERENT_ESCAPE_URIS = { "/index.jsp", "/index.html", "/login.jsp" }; public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException { if (request != null && request.getAttribute(FILTERED_REQUEST) != null) { chain.doFilter(request, response); } else { request.setAttribute(FILTERED_REQUEST, Boolean.TRUE); HttpServletRequest httpRequest = (HttpServletRequest) request; User userContext = getSessionUser(httpRequest); if (userContext == null && !isURILogin(httpRequest.getRequestURI(), httpRequest)) { String toUrl = httpRequest.getRequestURL().toString(); if (!StringUtils.isEmpty(httpRequest.getQueryString())) { toUrl += "?" + httpRequest.getQueryString(); } httpRequest.getSession().setAttribute(LOGIN_TO_URL, toUrl); request.getRequestDispatcher("/index.jsp").forward(request,response); return; } chain.doFilter(request, response); } } //@Override public void init(FilterConfig filterConfig) throws ServletException { } /** * 当前URI资源是否需要登录才能访问 * @param requestURI * @param request * @return */ private boolean isURILogin(String requestURI, HttpServletRequest request) { if (request.getContextPath().equalsIgnoreCase(requestURI)||(request.getContextPath() + "/").equalsIgnoreCase(requestURI)) return true; for (String uri : INHERENT_ESCAPE_URIS) { if (requestURI != null && requestURI.indexOf(uri) >= 0) { return true; } } return false; } protected User getSessionUser(HttpServletRequest request) { return (User) request.getSession().getAttribute(USER_CONTEXT); } //@Override public void destroy() { }}
------解决方案--------------------
和配置普通的servlet差不多吧.你自己测试下能行没就知道了啊
------解决方案--------------------
编写完filter，需要在web.xml中进行配置，代码如下：
<filter>
<filter-name>myFilter</filter-name>
<filter-class>--此处为你编写的MyFilter路径--</filter-class>
</filter>
<filter-mapping>
<filter-name>myFilter</filter-name>
<url-pattern>/*</url-pattern> //若想进行细化过滤，使用/*;若只想对jsp页面进行过滤，则使用*.jsp；意思类推
</filter-mapping>