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佳木斯两学一做网站,什么是精准营销,123logo设计,可信网站是否有规定必须做网络管理介绍此Demo展示如何查询网络详情、域名解析、网络状态监听等功能。效果预览： 使用说明： 1.启动应用，在点击检查网络、网络详情、网络连接信息后，展示对应的信息； 2.在域名解析的模块下，输入…

网络管理

介绍

此Demo展示如何查询网络详情、域名解析、网络状态监听等功能。

效果预览：

使用说明：

1.启动应用，在点击检查网络、网络详情、网络连接信息后，展示对应的信息；

2.在域名解析的模块下，输入对应的域名后，点击域名解析，展示解析的域名ip地址；

3.在网络监听模块下，开启网络监听后，展示当前监听的网络信息；关闭网络监听后，停止监听网络信息。

具体实现

使用@ohos.net.connection（网络连接管理）接口实现网络的详情、域名解析、网络监听等功能。代码：Index.ets

/***  * Copyright (c) 2023 Huawei Device Co., Ltd.*  * Licensed under the Apache License, Version 2.0 (the 'License');*  * you may not use this file except in compliance with the License.*  * You may obtain a copy of the License at*  **  *     http://www.apache.org/licenses/LICENSE-2.0*  **  * Unless required by applicable law or agreed to in writing, software*  * distributed under the License is distributed on an 'AS IS' BASIS,*  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.*  * See the License for the specific language governing permissions and*  * limitations under the License.**/import { connection } from '@kit.NetworkKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { CommonConstant as Const } from '../common/Constant';
import { promptAction } from '@kit.ArkUI';
import { Logger } from '../utils/Logger';@Entry
@Component
struct Index {@State networkId: string = Const.NETWORK_ID;@State netMessage: string = Const.INIT_NET_MESSAGE;@State connectionMessage: string = Const.INIT_CONNECTION_MESSAGE;@State netStateMessage: string = '';@State hostName: string = '';@State ip: string = '';private controller: TabsController = new TabsController();private netHandle: connection.NetHandle | null = null;private netCon: connection.NetConnection | null = null;scroller: Scroller = new Scroller();aboutToDisappear(): void {this.unUseNetworkRegister;}build() {Column() {Text($r('app.string.network_title')).fontSize($r('app.float.title_font_size')).fontWeight(FontWeight.Bold).textAlign(TextAlign.Start).margin({ left: Const.WebConstant_TEN_PERCENT }).width(Const.WebConstant_FULL_WIDTH)Tabs({ controller: this.controller }) {TabContent() {Column() {Scroll() {Column() {Row() {Column() {Text($r('app.string.check_network')).fontSize($r('app.float.font_size')).padding({ top: $r('app.float.md_padding_margin'), left: $r('app.float.md_padding_margin') }).fontWeight(FontWeight.Bold).align(Alignment.Start).width(Const.WebConstant_FULL_WIDTH)Text(this.networkId).fontSize($r('app.float.font_size')).padding($r('app.float.md_padding_margin')).align(Alignment.Start).opacity($r('app.float.opacity')).width(Const.WebConstant_FULL_WIDTH)}.width(Const.WebConstant_SEVENTY_PERCENT)Column() {Button($r('app.string.check')).fontSize($r('app.float.sm_font_size')).height(Const.WebConstant_BUTTON_HEIGHT).margin({ top: $r('app.float.md_padding_margin') }).width(Const.WebConstant_BUTTON_SMALL_WIDTH).buttonStyle(ButtonStyleMode.NORMAL).onClick(() => {this.isNetworkAccess();})}.align(Alignment.TopStart).height(Const.WebConstant_FULL_HEIGHT).width(Const.WebConstant_THIRTY_PERCENT)}.borderRadius($r('app.float.md_border_radius')).margin({ left: $r('app.float.md_padding_margin'), right: $r('app.float.md_padding_margin') }).width(Const.WebConstant_NINETY_PERCENT).height(Const.WebConstant_TWELVE_PERCENT).backgroundColor($r('app.color.text_background'))Row() {Column() {Text($r('app.string.network_detail')).fontSize($r('app.float.font_size')).padding({ top: $r('app.float.md_padding_margin'), left: $r('app.float.md_padding_margin') }).fontWeight(FontWeight.Bold).height(Const.WebConstant_FORTY_PERCENT).width(Const.WebConstant_FULL_WIDTH)Text(this.netMessage).fontSize($r('app.float.font_size')).padding($r('app.float.md_padding_margin')).opacity($r('app.float.opacity')).height(Const.WebConstant_SIXTY_PERCENT).width(Const.WebConstant_FULL_WIDTH)}.width(Const.WebConstant_SEVENTY_PERCENT).align(Alignment.TopStart)Column() {Button($r('app.string.detail')).fontSize($r('app.float.sm_font_size')).height(Const.WebConstant_BUTTON_HEIGHT).margin({ top: $r('app.float.md_padding_margin') }).width(Const.WebConstant_BUTTON_SMALL_WIDTH).buttonStyle(ButtonStyleMode.NORMAL).onClick(() => {this.getNetworkMessage();})}.align(Alignment.TopStart).height(Const.WebConstant_FULL_HEIGHT).width(Const.WebConstant_THIRTY_PERCENT)}.borderRadius($r('app.float.md_border_radius')).margin($r('app.float.md_padding_margin')).width(Const.WebConstant_NINETY_PERCENT).height(Const.WebConstant_FIFTEEN_PERCENT).backgroundColor($r('app.color.text_background'))Row() {Column() {Text($r('app.string.network_connection_detail')).fontSize($r('app.float.font_size')).padding($r('app.float.md_padding_margin')).fontWeight(FontWeight.Bold).width(Const.WebConstant_FULL_WIDTH).align(Alignment.Start)Text(this.connectionMessage).fontSize($r('app.float.font_size')).opacity($r('app.float.opacity')).width(Const.WebConstant_NINETY_PERCENT).align(Alignment.Start)}.width(Const.WebConstant_SEVENTY_PERCENT).justifyContent(FlexAlign.Start)Column() {Button($r('app.string.detail')).fontSize($r('app.float.sm_font_size')).height(Const.WebConstant_BUTTON_HEIGHT).margin({ top: $r('app.float.md_padding_margin') }).width(Const.WebConstant_BUTTON_SMALL_WIDTH).buttonStyle(ButtonStyleMode.NORMAL).onClick(() => {this.getConnectionProperties();})}.width(Const.WebConstant_THIRTY_PERCENT)}.alignItems(VerticalAlign.Top).borderRadius($r('app.float.md_border_radius')).margin({left: $r('app.float.md_padding_margin'),right: $r('app.float.md_padding_margin'),bottom: $r('app.float.xl_padding_margin')}).width(Const.WebConstant_NINETY_PERCENT).backgroundColor($r('app.color.text_background'))}.alignItems(HorizontalAlign.Start)}}.height(Const.WebConstant_FULL_HEIGHT).alignItems(HorizontalAlign.Start)}.tabBar(Const.FIRST_TABS_BAR)TabContent() {Column() {Search({ placeholder: Const.SEARCH_PLACEHOLDER }).margin({ left: $r('app.float.md_padding_margin'), right: $r('app.float.md_padding_margin') }).width(Const.WebConstant_NINETY_PERCENT).searchButton(Const.SEARCH_BUTTON).onSubmit((value: string) => {this.hostName = value;this.parseHostName(this.hostName);})TextArea({ text: this.ip }).fontSize($r('app.float.lg_font_size')).width(Const.WebConstant_NINETY_PERCENT).height(Const.WebConstant_FIFTY_PERCENT).margin({ top: $r('app.float.md_padding_margin') }).borderRadius($r('app.float.md_border_radius')).focusOnTouch(false)}.height(Const.WebConstant_FULL_HEIGHT).justifyContent(FlexAlign.Start)}.tabBar(Const.SECOND_TABS_BAR)TabContent() {Column() {Row() {Text(Const.MONITOR_TITLE).fontSize($r('app.float.font_size')).margin($r('app.float.md_padding_margin')).fontWeight(FontWeight.Medium)Blank()Toggle({ type: ToggleType.Switch, isOn: false }).selectedColor(Color.Blue).margin({ right: $r('app.float.md_padding_margin') }).width($r('app.float.area_width')).height(Const.WebConstant_BUTTON_HEIGHT).onChange((isOn) => {if (isOn) {this.useNetworkRegister();} else {this.unUseNetworkRegister();}})}.height($r('app.float.button_height')).borderRadius($r('app.float.md_border_radius')).margin({ left: $r('app.float.md_padding_margin'), right: $r('app.float.md_padding_margin') }).width(Const.WebConstant_NINETY_PERCENT).backgroundColor($r('app.color.text_background'))TextArea({ text: this.netStateMessage }).fontSize($r('app.float.font_size')).width(Const.WebConstant_NINETY_PERCENT).height(Const.WebConstant_FIVE_HUNDRED).margin($r('app.float.md_padding_margin')).borderRadius($r('app.float.md_border_radius')).textAlign(TextAlign.Start).focusOnTouch(false)Button($r('app.string.clear')).fontSize($r('app.float.font_size')).width(Const.WebConstant_NINETY_PERCENT).height($r('app.float.area_height')).margin({left: $r('app.float.md_padding_margin'),right: $r('app.float.md_padding_margin'),bottom: $r('app.float.xxl_padding_margin')}).onClick(() => {this.netStateMessage = '';})Blank()}.height(Const.WebConstant_FULL_HEIGHT).justifyContent(FlexAlign.Start)}.tabBar(Const.THIRD_TABS_BAR_THREE)}.barWidth(Const.WebConstant_EIGHTY_PERCENT)}.width(Const.WebConstant_FULL_WIDTH)}isNetworkAccess() {connection.hasDefaultNet((error: BusinessError) => {if (error) {this.networkId = Const.NETWORK_ERROR;Logger.error('hasDefaultNet error:' + error.message);return;}this.netHandle = connection.getDefaultNetSync();this.networkId = Const.NETWORK_ID + JSON.stringify(this.netHandle);})}getNetworkMessage() {if (this.netHandle) {connection.getNetCapabilities(this.netHandle, (error, netCap) => {if (error) {this.netMessage = Const.NETWORK_TYPE_ERROR;Logger.error('getNetCapabilities error:' + error.message);return;}let netType = netCap.bearerTypes;for (let i = 0; i < netType.length; i++) {if (netType[i] === 0) {this.netMessage = Const.CELLULAR_NETWORK;} else if (netType[i] === 1) {this.netMessage = Const.WIFI_NETWORK;} else {this.netMessage = Const.OTHER_NETWORK;}}this.netMessage += 'networkCap:' + JSON.stringify(netCap.networkCap) + '\n';})}}getConnectionProperties() {connection.getDefaultNet().then((netHandle: connection.NetHandle) => {connection.getConnectionProperties(netHandle, (error: BusinessError, connectionProperties: connection.ConnectionProperties) => {if (error) {this.connectionMessage = Const.CONNECTION_PROPERTIES_ERROR;Logger.error('getConnectionProperties error:' + error.code + error.message);return;}this.connectionMessage = Const.CONNECTION_PROPERTIES_INTERFACE_NAME + connectionProperties.interfaceName+ Const.CONNECTION_PROPERTIES_DOMAINS + connectionProperties.domains+ Const.CONNECTION_PROPERTIES_LINK_ADDRESSES + JSON.stringify(connectionProperties.linkAddresses)+ Const.CONNECTION_PROPERTIES_ROUTES + JSON.stringify(connectionProperties.routes)+ Const.CONNECTION_PROPERTIES_LINK_ADDRESSES + JSON.stringify(connectionProperties.dnses)+ Const.CONNECTION_PROPERTIES_MTU + connectionProperties.mtu + '\n';})});}parseHostName(hostName: string) {this.ip = '';connection.getAddressesByName(hostName).then((data) => {for (let i = 0; i < data.length; i++) {this.ip += data[i].address + '\n';}}).catch((error: BusinessError) => {this.ip = Const.GET_ADDRESSES_ERROR;Logger.error('getAddressesByName error:' + error.message);})}useNetworkRegister() {this.netCon = connection.createNetConnection();this.netStateMessage += Const.REGISTER_NETWORK_LISTENER;this.netCon.register((error) => {if (error) {Logger.error('register error:' + error.message);return;}promptAction.showToast({message: Const.REGISTER_NETWORK_LISTENER_MESSAGE,duration: 1000});})this.netCon.on('netAvailable', (netHandle) => {this.netStateMessage += Const.NET_AVAILABLE + netHandle.netId + '\n';})this.netCon.on('netBlockStatusChange', (data) => {this.netStateMessage += Const.NET_BLOCK_STATUS_CHANGE + data.netHandle.netId + '\n';})this.netCon.on('netCapabilitiesChange', (data) => {this.netStateMessage += Const.NET_CAPABILITIES_CHANGE_ID + data.netHandle.netId+ Const.NET_CAPABILITIES_CHANGE_CAP + JSON.stringify(data.netCap) + '\n';})this.netCon.on('netConnectionPropertiesChange', (data) => {this.netStateMessage += Const.NET_CONNECTION_PROPERTIES_CHANGE_ID + data.netHandle.netId+ Const.NET_CONNECTION_PROPERTIES_CHANGE_CONNECTION_PROPERTIES + JSON.stringify(data.connectionProperties) + '\n';})}unUseNetworkRegister() {if (this.netCon) {this.netCon.unregister((error: BusinessError) => {if (error) {Logger.error('unregister error:' + error.message);return;}promptAction.showToast({message: Const.UNREGISTER_NETWORK_LISTENER_MESSAGE,duration: 1000});this.netStateMessage += Const.UNREGISTER_NETWORK_LISTENER;})} else {this.netStateMessage += Const.UNREGISTER_NETWORK_LISTENER_FAIL;}}
}

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