50.HarmonyOS鸿蒙系统 App(ArkUI)web组件实现简易浏览器
配置网络访问权限：
跳转任务：
Button('转到').onClick(() => {try {// 点击按钮时，通过loadUrl，跳转到www.example1.comthis.webviewController.loadUrl(this.get_url);} catch (error) {console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);}})前进代码：
Button('-->>').onClick(()=>{if (this.webviewController.accessForward()){this.webviewController.forward();return true;}})后退代码：
Button('<<--').onClick(()=>{if (this.webviewController.accessBackward()){this.webviewController.backward();return true;}})项目代码：
// xxx.ets
import web_webview from '@ohos.web.webview';@Entry
@Componentstruct WebComponent {webviewController: web_webview.WebviewController = new web_webview.WebviewController();@State get_url:string = "www.cnblogs.com/"@State cnblogs:string = 'www.cnblogs.com/'@State csdn:string = 'txwtech.blog.csdn.net'@State baidu:string = 'www.baidu.com'controller: TextInputController = new TextInputController()build() {Column() {Text('简易浏览器demo').backgroundColor(Color.Blue).fontColor(Color.White).fontSize(28)Row(){Text('地址：')TextInput({text: this.get_url, placeholder: '请输入网址...', controller: this.controller}).onChange((value:string)=>{this.get_url = value}).backgroundColor(Color.Gray)}Row(){Button("cnblogs").onClick(()=>{this.get_url = this.cnblogs})Button('csdn').onClick(()=>{this.get_url = this.csdn})Button('baidu').onClick(()=>{this.get_url = this.baidu})}Row(){Button('<<--').onClick(()=>{if (this.webviewController.accessBackward()){this.webviewController.backward();return true;}})Button(' ')Button(' ')Button('转到').onClick(() => {try {// 点击按钮时，通过loadUrl，跳转到www.example1.comthis.webviewController.loadUrl(this.get_url);} catch (error) {console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);}})Button(' ')Button(' ')Button('-->>').onClick(()=>{if (this.webviewController.accessForward()){this.webviewController.forward();return true;}})}.borderColor(Color.Orange).backgroundColor(Color.Grey)// 组件创建时，加载www.example.comWeb({ src: '', controller: this.webviewController})}}
}
