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目录
阿里云HttpDns接入

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http://www.milovetingting.cn

前言

简单记录集成阿里云HTTPDNS服务的过程

什么是HTTPDNS

HTTPDNS是面向多端应用(移动端APP,PC客户端应用)的域名解析服务,具有域名防劫持、精准调度、实时解析生效的特性。

以上来自阿里云HTTPDNS文档。

接入流程

服务开通

HTTPDNS是移动研发平台提供的服务,请参考EMAS 快速入门开通服务。

  1. 开通服务后,进入控制台,点击添加产品,如图所示

  1. 完成添加产品后,点击添加应用,如图所示

  2. 添加应用完成后,点击刚才添加的应用

  3. 查看Account ID,这个id后面配置dns会用到

  4. 在域名列表中添加域名

Android SDK 接入

  1. 在项目根目录下的build.gradle文件中添加Maven仓库地址
gradle
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allprojects {
repositories {
maven {
url 'http://maven.aliyun.com/nexus/content/repositories/releases/'
}
}
}
  1. 在需要引入HTTPDNS服务的模块下的build.gradle中添加依赖
gradle
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dependencies {
compile ('com.aliyun.ams:alicloud-android-httpdns:1.3.3@aar') {
transitive true
}
}

按照以上官方文档配置,在同步工程后,会报错

Code
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Could not find com.aliyun.ams:alicloud-android-utdid:1.1.5.4.
Searched in the following locations:
- http://maven.aliyun.com/nexus/content/repositories/releases/com/aliyun/ams/alicloud-android-utdid/1.1.5.4/alicloud-android-utdid-1.1.5.4.pom
- https://dl.google.com/dl/android/maven2/com/aliyun/ams/alicloud-android-utdid/1.1.5.4/alicloud-android-utdid-1.1.5.4.pom
- https://jcenter.bintray.com/com/aliyun/ams/alicloud-android-utdid/1.1.5.4/alicloud-android-utdid-1.1.5.4.pom
Required by:
project :app > com.aliyun.ams:alicloud-android-httpdns:1.3.3 > com.aliyun.ams:alicloud-android-beacon:1.0.4.3

修改如下

gradle
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implementation('com.aliyun.ams:alicloud-android-httpdns:1.3.3@aar') {
transitive true
exclude group: 'com.aliyun.ams', module: 'alicloud-android-utdid'
}
implementation 'com.aliyun.ams:alicloud-android-utdid:1.1.5.3'
  1. 引入Retrofit及gson

    增加依赖

    gradle
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    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
    implementation 'com.google.code.gson:gson:2.8.6'
  2. 配置DNS

    新建一个类,继承Dns

    java
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    public class AliDns implements Dns {

    private HttpDnsService httpDns;

    public AliDns(Context context) {
    //传入account_id,account_id为HTTPDNS控制台添加应用时生成的
    httpDns = HttpDns.getService(context, "account_id");
    }

    @Override
    public List<InetAddress> lookup(String hostname) throws UnknownHostException {
    //通过异步解析接口获取ip
    String ip = httpDns.getIpByHostAsync(hostname);
    //Android9.0系统及以后版本,https请求无法直接访问,方便起见,直接在AndroidManifest.xml中配置android:usesCleartextTraffic="true"
    if (ip != null) {
    //如果ip不为null,直接使用该ip进行网络请求
    Log.e("AliDns", "ip:" + ip);
    List<InetAddress> inetAddresses = Arrays.asList(InetAddress.getAllByName(ip));
    return inetAddresses;
    }
    //如果返回null,走系统DNS服务解析域名
    return Dns.SYSTEM.lookup(hostname);
    }
    }

    设置OkHttpClient的dns

    java
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    OkHttpClient client = new OkHttpClient.Builder().dns(new AliDns(getApplicationContext())).build();
  3. 调用请求

    java
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    Retrofit retrofit = new Retrofit.Builder().client(client).baseUrl("域名").addConverterFactory(GsonConverterFactory.create()).build();
    Api api = retrofit.create(Api.class);
    Call<Bean> call = api.getBanner();
    call.enqueue(new Callback<Bean>() {
    @Override
    public void onResponse(Call<Bean> call, Response<Bean> response) {
    if (!response.isSuccessful()) {
    tv.setText("请求失败,错误码:" + response.code());
    return;
    }
    Bean bean = response.body();
    tv.setText(bean.toString());
    }

    @Override
    public void onFailure(Call<Bean> call, Throwable t) {
    tv.setText(t.getMessage());
    }
    });

源码

https://github.com/milovetingting/Samples

文章作者: milovetingting
文章链接: http://www.milovetingting.cn/2020/12/29/Android/%E9%98%BF%E9%87%8C%E4%BA%91HttpDns%E6%8E%A5%E5%85%A5/
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