fix ocr

mallinkSysAdmin/src/main/java/com/iformall/controller/ocr/WxOcrController.java

@@ -149,6 +149,9 @@ public class WxOcrController extends BaseController {
         	File file = multipartFileToFile(multiReq);
         	
         	String result = FormallTess4j.testDoOCR_File(ocrData, file, model.getFontName());
+        	
+        	file.delete();
+        	
             return new ResultData(result);
 
         } catch (Exception e) {