修改上传限制，删掉上传后关闭的逻辑

src/upload/upload.js

@@ -34,7 +34,7 @@ export class UploadContainer extends Component {
   }
 
   handleSubmit() {
-    if ((this.state.msg === "" && this.file === null) || this.state.submitting) return;
+    if (this.file === null || this.state.submitting) return;
     this.setState({ submitting: true });
     localStorage.removeItem('msgTemp');
   }
@@ -49,9 +49,7 @@ export class UploadContainer extends Component {
             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();
-          });
+          alert('内容提交成功啦');
         });
     }
   }
@@ -109,7 +107,7 @@ export class UploadContainer extends Component {
           <button
             className="btn btn-sdu btn-straight btn-upload"
             onClick={this.handleSubmit}
-            disabled={(this.state.msg === "" && this.state.file === null) || this.state.submitting}
+            disabled={this.state.file === null || this.state.submitting}
           >
             {
               this.state.submitting