diff --git a/src/modules/components/file_upload/file_upload.model.ts b/src/modules/components/file_upload/file_upload.model.ts
index 78d0a75..bf6d905 100644
--- a/src/modules/components/file_upload/file_upload.model.ts
+++ b/src/modules/components/file_upload/file_upload.model.ts
@@ -23,7 +23,7 @@ export class FileUploadModel extends Model {
 
     actions = {
         setFileInfo: (params: UploadParam) => {
-            var inter = this.options.inter;
+            const inter = this.options.inter;
             
             this.model.uploadUrl = Dec.Utils.getEncodeURL(Dec.fineServletURL + inter, "", params);
         },
diff --git a/src/modules/components/file_upload/file_upload.ts b/src/modules/components/file_upload/file_upload.ts
index 56265be..e3211a2 100644
--- a/src/modules/components/file_upload/file_upload.ts
+++ b/src/modules/components/file_upload/file_upload.ts
@@ -43,9 +43,9 @@ export class FileUpload extends BI.Widget {
 
     public render() {
         const { width, watermark, value, processId, inter } = this.options;
-        var self = this;
-        var processName = BI.concat("process-", processId);
-        var processClass = BI.concat(".process-", processId);
+        let self = this;
+        const processName = BI.concat("process-", processId);
+        const processClass = BI.concat(".process-", processId);
         this.setFileInfo({
             keytabPath: '',
             principal:'',
@@ -234,7 +234,7 @@ export class FileUpload extends BI.Widget {
                         eventName: BI.MultifileEditor.EVENT_CHANGE,
                         action: function (files) {
                             self.options.attachId = '';
-                            var fileInfo = files.files[0];
+                            const fileInfo = files.files[0];
                             self.setInfo(fileInfo);
                             self.store.setFileName(fileInfo.fileName);
                             this.upload();
@@ -245,7 +245,7 @@ export class FileUpload extends BI.Widget {
                         // 上传进度刷新
                         eventName: BI.MultifileEditor.EVENT_PROGRESS,
                         action: function (progress) {
-                            var rate = progress.loaded/progress.total;
+                            let rate = progress.loaded/progress.total;
                             NProgress.set(rate);
                         },
                     },
@@ -260,8 +260,8 @@ export class FileUpload extends BI.Widget {
                         // 上传文件完毕
                         eventName: BI.MultifileEditor.EVENT_UPLOADED,
                         action: function () {
-                            var uploadedInfo = this.getValue();
-                            var failed = BI.some(uploadedInfo, function (index, file) {
+                            const uploadedInfo = this.getValue();
+                            const failed = BI.some(uploadedInfo, function (index, file) {
                                 if (file.data.errorCode) {
                                     BI.Msg.toast(uploadedInfo[0].filename + BI.i18nText('Dec-Dcm_Connection_File_Upload_Error'), {
                                         level: "error",
@@ -270,7 +270,7 @@ export class FileUpload extends BI.Widget {
                                     return true;
                                 }
                             });
-                            var key = self.options.processId +'Path';
+                            const key = self.options.processId +'Path';
                             !failed && self.setValue(uploadedInfo[0].data.kerberosInfo[key]);
                             !failed && self.fireEvent(FileUpload.EVENT_CHECK_SUCCESS, uploadedInfo[0].data);
                             !failed && BI.Msg.toast(uploadedInfo[0].filename + BI.i18nText('Dec-Dcm_Connection_File_Upload_Success'),{
diff --git a/src/modules/pages/maintain/forms/components/form.jdbc.ts b/src/modules/pages/maintain/forms/components/form.jdbc.ts
index 1f39f08..3e1685d 100644
--- a/src/modules/pages/maintain/forms/components/form.jdbc.ts
+++ b/src/modules/pages/maintain/forms/components/form.jdbc.ts
@@ -404,7 +404,7 @@ export class FormJdbc extends BI.Widget {
                                 {
                                     eventName: FileUpload.EVENT_CHECK_SUCCESS,
                                     action: (value) => {
-                                        var principalsItems = BI.map(value.principals, function(index, item) {
+                                        const principalsItems = BI.map(value.principals, function(index, item) {
                                             return {
                                                 text: item,
                                                 value: item
@@ -1336,7 +1336,7 @@ export class FormJdbc extends BI.Widget {
     }
 
     public changePrincipal() {
-        var self = this;
+        let self = this;
         const KerberosParams = BI.extend({},{
             keytabPath: this.form.keyPath.getValue(),
             krb5ConfPath: this.form.krb5Path.getValue(),