观察修改

src/App.js

@@ -39,11 +39,15 @@ export class App extends React.Component {
 
   componentDidMount() {
     this.setState({ hostParams: this.props?.data });
-    this.$$hostParams = $hostParams.subscribe(() => { 
-      if ($hostParams.getValue()) {
-        this.setState({ hostParams: $hostParams.getValue() });
-      }
-    })
+
+    this.$$hostParams = $hostParams.subscribe({
+      next: (v) => {
+        if (v) {
+          this.setState({ hostParams: v });
+        }
+      },
+    });
+
   }
 
   componentWillUnmount() {

src/util/index.js

@@ -2,7 +2,7 @@ import React from "react";
 import { message, notification, Modal, Space, Button } from 'antd';
 import { Redirect } from 'react-router-dom';
 import { ExclamationCircleOutlined } from '@ant-design/icons';
-import { BehaviorSubject } from 'rxjs';
+import { Subject } from 'rxjs';
 
 import { dispatchLatest, action } from '../model';
 import { set_sess_state } from "../model/reducer";
@@ -17,7 +17,7 @@ export const inputWidth = isSzseEnv?360:240;
 
 export const ContextPath = '/data-govern';
 
-export const $hostParams = new BehaviorSubject(null);
+export const $hostParams = new Subject();
 
 const routeMap = {};
 export const ConvertToRouteMap = function (routes, pPath, pRoute) {