1、修改上传附件

src/main/java/com/dk/mdm/controller/FileController.java

@@ -64,16 +64,16 @@ public class FileController {
             String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
             fileType = fileType.toLowerCase();
 
-            if (fileType == "jpg" || fileType == "jepg" || fileType == "png") {
+            if ("jpg".equals(fileType)  || "jepg".equals(fileType)  || "png".equals(fileType)) {
                 return "img";
             }
-            if (fileType == "mp4" || fileType == "avi" || fileType == "mov") {
+            if ("mp4".equals(fileType) || "avi".equals(fileType) || "mov".equals(fileType)) {
                 return "video";
             }
-            if (fileType == "xls" || fileType == "xlsx") {
+            if ("xls".equals(fileType) || "xlsx".equals(fileType)) {
                 return "excel";
             }
-            if (fileType == "pdf") {
+            if ("pdf".equals(fileType)) {
                 return "pdf";
             }
         }