fix: upload半受控

src/components/Upload/index.tsx

@@ -48,6 +48,7 @@ class PicturesWall extends React.Component<PicturesWallType> {
     previewTitle: '',
     imgBed: [],
     curSelectedImg: '',
+    prevProps:{},
     fileList: this.props.value ? Array.isArray(this.props.value) ? this.props.value.map((v) => ({
       url: v,
       uid: uuid(8, 16),
@@ -64,8 +65,9 @@ class PicturesWall extends React.Component<PicturesWallType> {
   static getDerivedStateFromProps = (props, state) => {
     const fileList = state.fileList;
     const shouldUpdate = props.value && fileList.every(f => Array.isArray(props.value) ? !props.value.some(v => f.url === v) : f.url !== props.value)
-    if(fileList.length === 0 && props.value && shouldUpdate){
+    if(props.value !== state.prevProps.value && shouldUpdate){
       return {
+        provProps: props,
         fileList:  Array.isArray(props.value) ? props.value.map((v) => ({
           url: v,
           uid: uuid(8, 16),
@@ -79,7 +81,9 @@ class PicturesWall extends React.Component<PicturesWallType> {
         }] as UploadFile<any>[]
       }
     }
-    return null;
+    return {
+      prevProps: props
+    };
   }
 
   update = () =>{