完善日志，修复BUG

src/main/java/com/tptj/demo/hg/format/action/provider/DemoSessionFilter.java

@@ -1,10 +1,13 @@
 package com.tptj.demo.hg.format.action.provider;
 
+import com.fanruan.api.log.LogKit;
 import com.fr.invoke.Reflect;
+import com.fr.report.fun.FormatActionProvider;
 import com.fr.stable.fun.impl.AbstractSessionPrivilegeFilter;
 import com.fr.third.springframework.web.context.request.RequestContextHolder;
 import com.fr.third.springframework.web.context.request.ServletRequestAttributes;
 import com.fr.web.core.SessionPoolManager;
+import com.fr.web.core.reserve.FormatActionFactory;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -24,10 +27,16 @@ public class DemoSessionFilter extends AbstractSessionPrivilegeFilter {
 
     @Override
     public String encodeSessionID( String sessionID ){
+        LogKit.info("DemoSessionFilter#encodeSessionID Is Running!");
+        FormatActionProvider excel = FormatActionFactory.getReqProcessor("excel");
+        LogKit.info("FormatActionFactory.getReqProcessor(\"excel\") = {}",excel);
         while ( SessionPoolManager.hasSessionID(sessionID) ){
             sessionID = Reflect.on(SessionPoolManager.class).call("randomSessionID").get();
         }
         ServletRequestAttributes attrs = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        if( null == attrs || null == attrs.getRequest() ){
+            return sessionID;
+        }
         attrs.getRequest().setAttribute("sessionID",sessionID);
         return sessionID;
     }