完善上传页面的放大查看功能

src/upload/upload.js

@@ -44,7 +44,10 @@ export class UploadContainer extends Component {
       post(apis.submitMessage, { content: this.state.msg, image: this.state.url })
         .then(({ data, status, networkStatus }) => {
           if (networkStatus !== 200) return;
-          if (!status) return alert('提交内容失败：' + data);
+          if (!status) {
+            this.setState({ submitting: false });
+            return alert('提交内容失败：' + data);
+          }
           this.setState({ submitting: false, msg: "", url: "", file: null });
           alert('内容提交成功啦').then(({ isConfirmed }) => {
             if (isConfirmed) window.close();