前后段支持互发消息并支持调试

web-app/src/App.vue

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+<script setup>
+import { ref, onMounted, onUnmounted } from 'vue'
+
+const receivedMsg = ref('等待消息...')
+const inputMsg = ref('')
+
+const handleMessage = (event) => {
+  console.log("收到来自 WPF 的消息:", event.data);
+  receivedMsg.value = event.data
+}
+
+onMounted(() => {
+  if (window.chrome && window.chrome.webview) {
+    window.chrome.webview.addEventListener('message', handleMessage)
+  }
+})
+
+onUnmounted(() => {
+  if (window.chrome && window.chrome.webview) {
+    window.chrome.webview.removeEventListener('message', handleMessage)
+  }
+})
+
+const sendMessageToWPF = () => {
+  if (window.chrome && window.chrome.webview) {
+    window.chrome.webview.postMessage(inputMsg.value)
+  } else {
+    alert('未在 WebView2 环境中运行')
+  }
+}
+</script>
+
+<template>
+  <div class="container">
+    <h1>Vue 3 + WebView2 交互演示</h1>
+    
+    <div class="card">
+      <h3>接收来自 WPF 的消息:</h3>
+      <p class="msg-box">{{ receivedMsg }}</p>
+    </div>
+
+    <div class="card">
+      <h3>发送消息给 WPF:</h3>
+      <input v-model="inputMsg" placeholder="输入消息" />
+      <button @click="sendMessageToWPF">发送到 WPF</button>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.container {
+  font-family: Arial, sans-serif;
+  padding: 20px;
+  text-align: center;
+}
+.card {
+  border: 1px solid #ddd;
+  border-radius: 8px;
+  padding: 15px;
+  margin: 10px 0;
+  background: #f9f9f9;
+}
+.msg-box {
+  font-weight: bold;
+  color: #2c3e50;
+  font-size: 1.2em;
+}
+input {
+  padding: 8px;
+  width: 200px;
+  margin-right: 10px;
+}
+button {
+  padding: 8px 15px;
+  background-color: #42b883;
+  color: white;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+}
+button:hover {
+  background-color: #3aa876;
+}
+</style>

web-app/src/assets/vue.svg

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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="37.07" height="36" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 198"><path fill="#41B883" d="M204.8 0H256L128 220.8L0 0h97.92L128 51.2L157.44 0h47.36Z"></path><path fill="#41B883" d="m0 0l128 220.8L256 0h-51.2L128 132.48L50.56 0H0Z"></path><path fill="#35495E" d="M50.56 0L128 133.12L204.8 0h-47.36L128 51.2L97.92 0H50.56Z"></path></svg>

web-app/src/components/HelloWorld.vue

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+<script setup>
+import { ref } from 'vue'
+
+defineProps({
+  msg: String,
+})
+
+const count = ref(0)
+</script>
+
+<template>
+  <h1>{{ msg }}</h1>
+
+  <div class="card">
+    <button type="button" @click="count++">count is {{ count }}</button>
+    <p>
+      Edit
+      <code>components/HelloWorld.vue</code> to test HMR
+    </p>
+  </div>
+
+  <p>
+    Check out
+    <a href="https://vuejs.org/guide/quick-start.html#local" target="_blank"
+      >create-vue</a
+    >, the official Vue + Vite starter
+  </p>
+  <p>
+    Learn more about IDE Support for Vue in the
+    <a
+      href="https://vuejs.org/guide/scaling-up/tooling.html#ide-support"
+      target="_blank"
+      >Vue Docs Scaling up Guide</a
+    >.
+  </p>
+  <p class="read-the-docs">Click on the Vite and Vue logos to learn more</p>
+</template>
+
+<style scoped>
+.read-the-docs {
+  color: #888;
+}
+</style>

web-app/src/main.js

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+import { createApp } from 'vue'
+import './style.css'
+import App from './App.vue'
+
+// 创建 Vue 实例
+const app = createApp(App)
+
+// 核心：开发环境强制开启 Vue Devtools（WebView2 调试必备）
+if (import.meta.env.DEV) {
+  app.config.devtools = true
+  // 可选：开启性能调试（如需分析性能）
+  app.config.performance = true
+}
+
+// 挂载到 DOM
+app.mount('#app')

web-app/src/style.css

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+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+.card {
+  padding: 2em;
+}
+
+#app {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}