bug fix

src/components/uploadImage/ImageUpload.jsx

     loading: false,
     previewVisible: false,
     previewImage: '',
-    fileList: [],
+    fileList: this.getPropsFileList(),
   };
 
-  componentDidUpdate() {  this.setState({ fileList: [{
-    uid: '-1',
-    name: 'image.png',
-    status: 'done',
-    url: this.props.value,
-  }] })  }
+  componentDidUpdate(prevProps) {
+    // 直接 setState 会死循环
+    if (prevProps.value !== this.props.value) {
+      this.setState({ fileList: this.getPropsFileList() })
+    }
+  }
+
+  getPropsFileList() {
+    return !this.props.value ? [] : [{
+      uid: '-1',
+      name: 'image.png',
+      status: 'done',
+      url: this.props.value,
+    }]
+  }
 
 
   handleChange = ({ file, fileList }) => {