get rid of reflection warning

@@ -24,6 +24,6 @@
     (fn [req]
       (if-not (= :get (:request-method req))
         (app req)
-        (let [path (.substring (codec/url-decode (:uri req)) 1)]
+        (let [path (.substring ^String (codec/url-decode (:uri req)) 1)]
           (or (response/file-response path opts)
               (app req)))))))

@@ -13,7 +13,7 @@
   (or (ext-mime-type (.getPath file) mime-types)
       "application/octet-stream"))
 
-(defn make-http-format
+(defn ^SimpleDateFormat make-http-format
   "Formats or parses dates into HTTP date format (RFC 822/1123)."
   []
   ;; SimpleDateFormat is not threadsafe, so return a new instance each time

@@ -51,7 +51,8 @@
   "Parse a map of multipart parameters from the request."
   [request encoding store]
   (into {}
-    (for [item (file-item-seq (request-context request encoding))]
+        (for [^FileItemStream item (file-item-seq
+                                    (request-context request encoding))]
       [(.getFieldName item)
        (parse-file-item item store)])))
 

@@ -9,18 +9,18 @@
        (try ~@body
             (catch Exception ex#)))))
 
-(defn- expired? [file expiry-time]
+(defn- expired? [^File file expiry-time]
   (< (.lastModified file)
      (- (System/currentTimeMillis)
         (* expiry-time 1000))))
 
 (defn- remove-old-files [file-set expiry-time]
-  (doseq [file @file-set]
+  (doseq [^File file @file-set]
     (when (expired? file expiry-time)
       (.delete file)
       (swap! file-set disj file))))
 
-(defn- make-temp-file [file-set]
+(defn- ^File make-temp-file [file-set]
   (let [temp-file (File/createTempFile "ring-multipart-" nil)]
     (swap! file-set conj temp-file)
     (.deleteOnExit temp-file)

@@ -43,7 +43,7 @@
   "Safely retrieve the correct file. See file-response for an
   explanation of options."
   [^String path opts]
-  (if-let [file (if-let [^String root (:root opts)]
+  (if-let [^File file (if-let [^String root (:root opts)]
                   (and (safe-path? root path) (File. root path))
                   (File. path))]
     (cond