add：新增文件上传数量限制及文件类型白名单

src/components/editor/app-mob-file-upload/app-mob-file-upload.vue

@@ -8,9 +8,10 @@
         </ion-item-group>
         <ion-row >
         <van-uploader 
-            accept="*"
+            :accept="accept"
             :class="singleChoiceBtnState" 
-            multiple="false" 
+            :max-count="multiple ? limit : 1"
+            :multiple="multiple"
             :disabled="state" 
             :result-type="resultType"
             :before-read="beforeRead" 
@@ -173,6 +174,22 @@ export default class AppMobFileUpload extends Vue {
      */
     @Prop({ default: true }) public multiple?: boolean;
 
+    /**
+     * 最大允许上传个数
+     *
+     * @type {*}
+     * @memberof AppMobFileUpload
+     */
+    @Prop({default: 9999}) public limit!: number;
+
+    /**
+     * 接受上传的文件类型
+     *
+     * @type {*}
+     * @memberof AppMobFileUpload
+     */
+    @Prop({default: '*'}) public accept!: string;
+
     /**
      * 表单状态
      *

src/components/editor/app-mob-picture/app-mob-picture.vue

@@ -3,7 +3,9 @@
         <van-uploader 
             v-if="platform =='web'"
             :class="singleChoiceBtnState"
-            :multiple="multiple" 
+            :accept="accept"
+            :multiple="multiple"
+            :max-count="multiple ? limit : 1" 
             :disabled="state" 
             :fileList="files" 
             :deletable="!readOnly"
@@ -179,6 +181,22 @@ export default class AppMobPicture extends Vue {
      */
     @Prop({ default: true }) public multiple?: boolean;
 
+    /**
+     * 最大允许上传个数
+     *
+     * @type {*}
+     * @memberof AppMobPicture
+     */
+    @Prop({default: 9999}) public limit!: number;
+
+    /**
+     * 接受上传的文件类型
+     *
+     * @type {*}
+     * @memberof AppMobPicture
+     */
+    @Prop({default: 'image/*'}) public accept!: string;
+
     /**
      * 表单状态
      *