diff --git a/src/filter/S_Filter.java b/src/filter/S_Filter.java
deleted file mode 100644
index 183a996..0000000
--- a/src/filter/S_Filter.java
+++ /dev/null
@@ -1,62 +0,0 @@
-package filter;
-
-import javax.servlet.*;
-import javax.servlet.annotation.WebFilter;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import javax.servlet.http.HttpSession;
-import java.io.IOException;
-@WebFilter(filterName = "sessionFilter",urlPatterns = {"/*"})
-public class S_Filter implements Filter {
-    String NO_LOGIN="/notLogin";
-    String includeUrls="/gdms/login.jsp";
-
-    @Override
-    public void init(FilterConfig filterConfig) throws ServletException {
-
-    }
-
-    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws ServletException,IOException{
-        HttpServletRequest request=(HttpServletRequest) servletRequest;
-        HttpServletResponse response=(HttpServletResponse) servletResponse;
-        HttpSession session=request.getSession(false);
-        String uri=request.getRequestURI();
-        //是否需要过滤
-        boolean needFilter=isNeedFilter(uri);
-        if(!needFilter){
-            filterChain.doFilter(servletRequest,servletResponse);
-        }else{
-            //需要过滤器
-            //session中包含user对象，则是登录状态
-            if(session!=null&&session.getAttribute("user")!=null){
-                filterChain.doFilter(servletRequest,servletResponse);
-            }else{
-                String requestType=request.getHeader("X-Requested-with");
-                //判断是否是ajax请求
-                if(requestType!=null&&"XMLHttpRequest".equals(requestType)){
-                    response.sendRedirect(NO_LOGIN);
-                }else{
-                    //重定向到登录页(需要在static文件夹下建立此html文件)
-                   response.sendRedirect("/gdms/login.jsp");
-                }
-                return;
-            }
-        }
-
-
-    }
-
-    @Override
-    public void destroy() {
-
-    }
-
-    public boolean isNeedFilter(String uri) {
-            if (includeUrls.equals(uri)) {
-                return false;
-            }
-        return true;
-    }
-
-
-}