fix some bugs

src/components/DialogForm/index.vue

@@ -101,7 +101,9 @@
 								}
 							"
 							v-bind="col.bind">
-							<el-button size="mini" :disabled="disabled || col.bind?.disabled || false">
+							<el-button
+								size="mini"
+								:disabled="disabled || col.bind?.disabled || false">
 								<svg-icon
 									icon-class="icon-upload"
 									style="color: inherit"></svg-icon>
@@ -410,8 +412,26 @@ export default {
 			}
 			if (!promiseList.length) this.formLoading = false;
 		},
+
 		// 上传成功的特殊处理
-		beforeUpload() {},
+		beforeUpload(file) {
+			const checkFileSize = () => {
+				const isLt2M = file.size / 1024 / 1024 < 2;
+				if (!isLt2M) {
+					this.$modal.msgError('上传文件大小不能超过 2MB!');
+				}
+				return isLt2M;
+			};
+			const checkFileType = () => {
+				const isJPG =
+					file.type === 'image/jpeg' ||
+					file.type === 'image/png' ||
+					file.type === 'image/jpg';
+				return isJPG;
+			};
+			return checkFileSize() && checkFileType();
+		},
+
 		// 上传前的验证规则可通过 bind 属性传入
 		handleUploadSuccess(response, file, prop) {
 			console.log('[handleUploadSuccess]', response, file, prop);