使用connection.getConnectionProperties获取netHandle对应网络的连接信息，包括网卡链路地址和DNS地址。需要权限：ohos.permission.INTERNET、ohos.permission.GET_NETWORK_INFO。参考代码如下：
import { connection } from '@kit.NetworkKit';
import { BusinessError } from '@kit.BasicServicesKit';
@Entry
@Component
struct GetConnectionProperties {
getConnectionProperties() {
connection.getDefaultNet().then((netHandle: connection.NetHandle) => {
connection.getConnectionProperties(netHandle, (error: BusinessError, data: connection.ConnectionProperties) => {
if (error) {
console.error(`Failed to get connection properties. Code:${error.code}, message:${error.message}`);
return;
}
console.info('Succeeded to get data: ' + JSON.stringify(data));
})
});
}
build() {
Column({ space: 10 }) {
Button('获取对应的网络连接信息')
.onClick(() => {
this.getConnectionProperties();
})
}
.alignItems(HorizontalAlign.Center)
.height('100%')
.width('100%')
}
}