{"id":236003,"date":"2024-05-13T14:32:12","date_gmt":"2024-05-13T06:32:12","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/236003.html"},"modified":"2024-05-13T14:32:20","modified_gmt":"2024-05-13T06:32:20","slug":"android%e5%a6%82%e4%bd%95%e8%8e%b7%e5%8f%96%e5%a4%96%e7%bd%91dns","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/236003.html","title":{"rendered":"Android\u5982\u4f55\u83b7\u53d6\u5916\u7f51DNS"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25161148\/e192583e-81ab-4acf-9ea2-75c6ec7380aa.webp\" alt=\"Android\u5982\u4f55\u83b7\u53d6\u5916\u7f51DNS\" \/><\/p>\n<p><p>\u83b7\u53d6\u5916\u7f51DNS\u5728Android\u8bbe\u5907\u4e0a\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\uff1a<strong>\u4f7f\u7528Java API\u67e5\u8be2\u3001\u5229\u7528\u7b2c\u4e09\u65b9\u5e93\u3001\u901a\u8fc7\u7cfb\u7edf\u6587\u4ef6\u89e3\u6790\u3001\u8c03\u7528\u7f51\u7edc\u8bca\u65ad\u5de5\u5177<\/strong>\u3002\u6700\u5e38\u89c4\u7684\u65b9\u6cd5\u662f\u5229\u7528Android\u7cfb\u7edf\u7684Java API\u8fdb\u884cDNS\u670d\u52a1\u5668\u5730\u5740\u7684\u67e5\u8be2\u3002\u8fd9\u4e0d\u4ec5\u662f\u4e00\u79cd\u7b80\u4fbf\u7684\u65b9\u6cd5\uff0c\u4e5f\u662f\u4e0d\u9700\u8981\u989d\u5916\u6743\u9650\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528JAVA API\u67e5\u8be2<\/h3>\n<\/p>\n<p><p>Android\u5e73\u53f0\u4e0a\uff0c\u53ef\u4ee5\u901a\u8fc7Java\u7684<code>NetworkInterface<\/code>\u7c7b\u6765\u83b7\u53d6\u5f53\u524d\u7f51\u7edc\u63a5\u53e3\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u5305\u62ecDNS\u4fe1\u606f\u3002\u6b64API\u9002\u7528\u4e8e\u5927\u90e8\u5206\u6807\u51c6\u7684Java\u73af\u5883\uff0c\u56e0\u6b64\u4e5f\u9002\u7528\u4e8eAndroid\u3002<\/p>\n<\/p>\n<p><p><strong>\u5b9e\u73b0\u6b65\u9aa4<\/strong>\uff1a<\/p>\n<\/p>\n<ol>\n<li>\u83b7\u53d6\u8bbe\u5907\u4e0a\u6240\u6709\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/li>\n<li>\u904d\u5386\u8fd9\u4e9b\u7f51\u7edc\u63a5\u53e3\uff0c\u4ece\u4e2d\u63d0\u53d6DNS\u670d\u52a1\u5668\u4fe1\u606f\u3002<\/li>\n<\/ol>\n<p><p><strong>\u4ee3\u7801\u793a\u4f8b<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">import java.net.NetworkInterface;<\/p>\n<p>import java.util.Collections;<\/p>\n<p>import java.util.List;<\/p>\n<p>import android.content.Context;<\/p>\n<p>import android.net.ConnectivityManager;<\/p>\n<p>public class DnsUtils {<\/p>\n<p>    public static String getDNS1(Context context) {<\/p>\n<p>        try {<\/p>\n<p>            ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);<\/p>\n<p>            if (connMgr == null) return null;<\/p>\n<p>            NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();<\/p>\n<p>            if (networkInfo == null) return null;<\/p>\n<p>            List&lt;NetworkInterface&gt; interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());<\/p>\n<p>            for (NetworkInterface intf : interfaces) {<\/p>\n<p>                List&lt;InetAddress&gt; addrs = Collections.list(intf.getInetAddresses());<\/p>\n<p>                for (InetAddress addr : addrs) {<\/p>\n<p>                    \/\/ \u8fd9\u91cc\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u6765\u63d0\u53d6\u6240\u9700\u7684DNS\u4fe1\u606f<\/p>\n<p>                    \/\/ ...<\/p>\n<p>                }<\/p>\n<p>            }<\/p>\n<p>        } catch (Exception ex) {<\/p>\n<p>            ex.printStackTrace();<\/p>\n<p>        }<\/p>\n<p>        return null;<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u5229\u7528\u7b2c\u4e09\u65b9\u5e93\u83b7\u53d6<\/h3>\n<\/p>\n<p><p>\u9664\u4e86\u4f7f\u7528Java\u539f\u751fAPI\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e09\u65b9\u7684\u7f51\u7edc\u5e93\u6765\u83b7\u53d6DNS\u4fe1\u606f\u3002\u8fd9\u6837\u901a\u5e38\u53ef\u4ee5\u51cf\u5c11\u7f16\u7801\u7684\u590d\u6742\u6027\uff0c\u5e76\u53ef\u80fd\u589e\u52a0\u8de8\u4e0d\u540cAndroid\u7248\u672c\u7684\u517c\u5bb9\u6027\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e38\u7528\u7684\u7b2c\u4e09\u65b9\u5e93<\/strong>\uff1a<\/p>\n<\/p>\n<ul>\n<li><code>minidns<\/code>\uff1a\u4e00\u6b3e\u8f7b\u91cf\u7ea7\u7684DNS\u5e93\uff0c\u4e0d\u4ec5\u80fd\u83b7\u53d6\u5230DNS\u4fe1\u606f\uff0c\u8fd8\u80fd\u5b8c\u6210DNS\u67e5\u8be2\u7684\u529f\u80fd\u3002<\/li>\n<li><code>okhttp<\/code>\uff1a\u5f3a\u5927\u7684\u7f51\u7edc\u8bf7\u6c42\u5e93\uff0c\u901a\u8fc7\u5b83\u6765\u8bbe\u7f6e\u7f51\u7edc\u8bf7\u6c42\u65f6\u53ef\u4ee5\u8bbe\u7f6eDNS\u3002<\/li>\n<\/ul>\n<p><p><strong>\u4f7f\u7528minidns\u83b7\u53d6DNS\u4fe1\u606f\u7684\u793a\u4f8b<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-kotlin\">import org.minidns.dnsname.DnsName;<\/p>\n<p>import org.minidns.iterative.ReliableDnsClient;<\/p>\n<p>class DnsLookup {<\/p>\n<p>    fun getDnsServers(): List&lt;String&gt; {<\/p>\n<p>        val dnsClient = ReliableDnsClient()<\/p>\n<p>        val servers = dnsClient.servers<\/p>\n<p>        return servers.map { it.address.hostAddress }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u901a\u8fc7\u7cfb\u7edf\u6587\u4ef6\u89e3\u6790<\/h3>\n<\/p>\n<p><p>Android\u8bbe\u5907\u901a\u5e38\u4f1a\u5728\u7cfb\u7edf\u6587\u4ef6\u4e2d\u4fdd\u5b58\u5f53\u524d\u7684DNS\u914d\u7f6e\u3002\u56e0\u6b64\uff0c\u53e6\u4e00\u79cd\u83b7\u53d6DNS\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u89e3\u6790\u8fd9\u4e9b\u6587\u4ef6\u3002\u5f53\u7136\uff0c\u8fd9\u79cd\u65b9\u6cd5\u901a\u5e38\u9700\u8981\u8bbe\u5907\u6709root\u6743\u9650\u3002<\/p>\n<\/p>\n<p><p><strong>\u8981\u89e3\u6790\u7684\u5173\u952e\u7cfb\u7edf\u6587\u4ef6<\/strong>\uff1a<\/p>\n<\/p>\n<ul>\n<li><code>\/etc\/resolv.conf<\/code>\uff1a\u8fd9\u4e2a\u6587\u4ef6\u901a\u5e38\u7528\u4e8e\u5b58\u50a8DNS\u670d\u52a1\u5668\u7684\u914d\u7f6e\u3002<\/li>\n<li><code>\/system\/etc\/<\/code> \u76ee\u5f55\u4e0b\u5176\u4ed6\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u53ef\u80fd\u4f1a\u6709\u8bbe\u5907\u7279\u5b9a\u7684DNS\u8bbe\u7f6e\u3002<\/li>\n<\/ul>\n<p><p><strong>\u89e3\u6790\u6b65\u9aa4<\/strong>\uff1a<\/p>\n<\/p>\n<ol>\n<li>\u9700\u786e\u4fdd\u5e94\u7528\u6709\u8bfb\u53d6\u7cfb\u7edf\u6587\u4ef6\u7684\u6743\u9650\uff08\u901a\u5e38\u9700\u8981root\uff09\u3002<\/li>\n<li>\u901a\u8fc7\u6587\u4ef6\u64cd\u4f5cAPI\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u5e76\u89e3\u6790\u5f97\u5230DNS\u5730\u5740\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-java\">import java.io.BufferedReader;<\/p>\n<p>import java.io.FileReader;<\/p>\n<p>public class DnsConfigReader {<\/p>\n<p>    public static String readDnsConfig() {<\/p>\n<p>        StringBuilder dnsConfig = new StringBuilder();<\/p>\n<p>        try {<\/p>\n<p>            BufferedReader br = new BufferedReader(new FileReader(&quot;\/etc\/resolv.conf&quot;));<\/p>\n<p>            String line;<\/p>\n<p>            while ((line = br.readLine()) != null) {<\/p>\n<p>                if (line.startsWith(&quot;nameserver&quot;)) {<\/p>\n<p>                    dnsConfig.append(line).append(&quot;\\n&quot;);<\/p>\n<p>                }<\/p>\n<p>            }<\/p>\n<p>            br.close();<\/p>\n<p>        } catch (Exception e) {<\/p>\n<p>            e.printStackTrace();<\/p>\n<p>        }<\/p>\n<p>        return dnsConfig.toString();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u8c03\u7528\u7f51\u7edc\u8bca\u65ad\u5de5\u5177<\/h3>\n<\/p>\n<p><p>Android\u8bbe\u5907\u4e0a\u901a\u5e38\u9884\u88c5\u6709\u4e00\u4e9b\u7f51\u7edc\u8bca\u65ad\u5de5\u5177\uff0c\u4f8b\u5982<code>ping<\/code>\u3001<code>dig<\/code>\u7b49\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e9b\u5de5\u5177\u6765\u83b7\u53d6\u5f53\u524d\u7684DNS\u670d\u52a1\u5668\u4fe1\u606f\u3002\u8fd9\u4e9b\u5de5\u5177\u901a\u5e38\u8981\u5728\u8bbe\u5907\u7684shell\u73af\u5883\u4e0b\u8fd0\u884c\u3002Java Runtime\u6216\u8005Runtime Process\u53ef\u4ee5\u7528\u4e8e\u6267\u884c\u8fd9\u4e9b\u547d\u4ee4\u3002<\/p>\n<\/p>\n<p><p><strong>\u6267\u884c\u7f51\u7edc\u8bca\u65ad\u547d\u4ee4\u7684\u793a\u4f8b<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-java\">import java.io.BufferedReader;<\/p>\n<p>import java.io.InputStreamReader;<\/p>\n<p>public class DnsToolRunner {<\/p>\n<p>    public static String getDnsWithDig() {<\/p>\n<p>        try {<\/p>\n<p>            Process process = Runtime.getRuntime().exec(&quot;getprop net.dns1&quot;);<\/p>\n<p>            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));<\/p>\n<p>            String dnsAddress;<\/p>\n<p>            if ((dnsAddress = bufferedReader.readLine()) != null) {<\/p>\n<p>                return dnsAddress;<\/p>\n<p>            }<\/p>\n<p>        } catch (Exception e) {<\/p>\n<p>            e.printStackTrace();<\/p>\n<p>        }<\/p>\n<p>        return null;<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u83b7\u53d6\u5916\u7f51DNS\u7684\u65b9\u6cd5\u8981\u6839\u636e\u5177\u4f53\u7684\u8bbe\u5907\u548c\u73af\u5883\u6765\u9009\u62e9\u3002\u5c24\u5176\u662f\u6d89\u53ca\u7cfb\u7edf\u6743\u9650\u548c\u8de8\u7248\u672c\u517c\u5bb9\u6027\u7684\u60c5\u51b5\uff0c\u5f00\u53d1\u8005\u9700\u8981\u7279\u522b\u6ce8\u610f\u9009\u7528\u5408\u9002\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>Q: \u5728Android\u4e0a\u5982\u4f55\u8bbe\u7f6e\u6216\u4fee\u6539\u5916\u7f51DNS\uff1f<\/strong><\/p>\n<p>A: \u8bbe\u7f6e\u6216\u4fee\u6539Android\u8bbe\u5907\u7684\u5916\u7f51DNS\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol>\n<li>\u6253\u5f00Android\u8bbe\u5907\u7684\u8bbe\u7f6e\u83dc\u5355\u3002<\/li>\n<li>\u6eda\u52a8\u5e76\u627e\u5230\u201c\u7f51\u7edc\u548c\u4e92\u8054\u7f51\u201d\u9009\u9879\uff0c\u7136\u540e\u70b9\u51fb\u8fdb\u5165\u3002<\/li>\n<li>\u5728\u7f51\u7edc\u548c\u4e92\u8054\u7f51\u83dc\u5355\u4e2d\uff0c\u9009\u62e9\u201cWi-Fi\u201d\u9009\u9879\u3002<\/li>\n<li>\u627e\u5230\u4f60\u5f53\u524d\u8fde\u63a5\u7684\u65e0\u7ebf\u7f51\u7edc\u540d\u79f0\uff0c\u7136\u540e\u70b9\u51fb\u5b83\u8fdb\u5165\u66f4\u591a\u9009\u9879\u3002<\/li>\n<li>\u5728\u65e0\u7ebf\u7f51\u7edc\u7684\u8be6\u7ec6\u4fe1\u606f\u9875\u9762\u4e2d\uff0c\u627e\u5230\u201c\u9ad8\u7ea7\u9009\u9879\u201d\u6216\u7c7b\u4f3c\u9009\u9879\uff0c\u5e76\u70b9\u51fb\u8fdb\u5165\u3002<\/li>\n<li>\u5728\u9ad8\u7ea7\u9009\u9879\u4e2d\uff0c\u67e5\u627e\u5e76\u9009\u62e9\u201cIP\u8bbe\u7f6e\u201d\u6216\u201c\u9759\u6001IP\u201d\u9009\u9879\u3002<\/li>\n<li>\u5728IP\u8bbe\u7f6e\u9875\u9762\u5185\uff0c\u9009\u62e9\u201c\u9759\u6001\u201d\u9009\u9879\uff0c\u7136\u540e\u8f93\u5165\u9002\u5f53\u7684\u5916\u7f51DNS\u5730\u5740\u3002<\/li>\n<li>\u8f93\u5165\u5b8c\u6bd5\u540e\uff0c\u70b9\u51fb\u4fdd\u5b58\u6216\u5e94\u7528\u66f4\u6539\u3002<\/li>\n<\/ol>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e9b\u83dc\u5355\u548c\u9009\u9879\u53ef\u80fd\u5728\u4e0d\u540c\u7684Android\u8bbe\u5907\u4e0a\u6709\u6240\u4e0d\u540c\uff0c\u5177\u4f53\u6b65\u9aa4\u53ef\u80fd\u4f1a\u6709\u6240\u533a\u522b\u3002\u786e\u4fdd\u67e5\u9605\u4f60\u7684\u8bbe\u5907\u578b\u53f7\u548c\u64cd\u4f5c\u7cfb\u7edf\u7248\u672c\u7684\u76f8\u5173\u6587\u6863\u4ee5\u83b7\u53d6\u8be6\u7ec6\u7684\u8bf4\u660e\u3002<\/p>\n<p><strong>Q: \u6211\u5728Android\u4e0a\u8bbe\u7f6e\u4e86\u5916\u7f51DNS\uff0c\u4f46\u4e3a\u4ec0\u4e48\u65e0\u6cd5\u751f\u6548\uff1f<\/strong><\/p>\n<p>A: \u5982\u679c\u4f60\u5728Android\u8bbe\u5907\u4e0a\u8bbe\u7f6e\u4e86\u5916\u7f51DNS\uff0c\u4f46\u6ca1\u6709\u751f\u6548\uff0c\u53ef\u80fd\u6709\u4ee5\u4e0b\u51e0\u4e2a\u539f\u56e0\uff1a<\/p>\n<ol>\n<li>\u7f51\u7edc\u8fde\u63a5\u95ee\u9898\uff1a\u8bf7\u786e\u4fdd\u4f60\u7684\u8bbe\u5907\u5df2\u6210\u529f\u8fde\u63a5\u5230\u65e0\u7ebf\u7f51\u7edc\uff0c\u5e76\u53ef\u4ee5\u6b63\u5e38\u8bbf\u95ee\u4e92\u8054\u7f51\u3002<\/li>\n<li>DNS\u670d\u52a1\u5668\u4e0d\u53ef\u7528\uff1a\u5916\u7f51DNS\u5730\u5740\u53ef\u80fd\u65e0\u6cd5\u6b63\u5e38\u8bbf\u95ee\u6216\u88ab\u963b\u6b62\uff0c\u5efa\u8bae\u5c1d\u8bd5\u5176\u4ed6\u53ef\u9760\u7684DNS\u670d\u52a1\u5668\u3002<\/li>\n<li>\u8bbe\u5907\u9650\u5236\uff1a\u67d0\u4e9bAndroid\u8bbe\u5907\u53ef\u80fd\u6709\u7279\u5b9a\u7684\u7f51\u7edc\u8bbe\u7f6e\u9650\u5236\uff0c\u5bfc\u81f4\u65e0\u6cd5\u66f4\u6539\u5916\u7f51DNS\u3002\u8bf7\u68c0\u67e5\u4f60\u7684\u8bbe\u5907\u662f\u5426\u6709\u8fd9\u4e9b\u9650\u5236\u3002<\/li>\n<\/ol>\n<p>\u5982\u679c\u4ee5\u4e0a\u6b65\u9aa4\u90fd\u6ca1\u6709\u89e3\u51b3\u95ee\u9898\uff0c\u8bf7\u8003\u8651\u8054\u7cfb\u4f60\u7684\u7f51\u7edc\u670d\u52a1\u63d0\u4f9b\u5546\u6216\u8bbe\u5907\u5236\u9020\u5546\u5bfb\u6c42\u8fdb\u4e00\u6b65\u7684\u652f\u6301\u3002<\/p>\n<p><strong>Q: \u6709\u6ca1\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u901a\u8fc7Android\u8bbe\u5907\u83b7\u53d6\u5916\u7f51DNS\uff1f<\/strong><\/p>\n<p>A: \u662f\u7684\uff0c\u9664\u4e86\u5728Android\u8bbe\u5907\u4e0a\u76f4\u63a5\u8bbe\u7f6e\u5916\u7f51DNS\u4e4b\u5916\uff0c\u4f60\u8fd8\u53ef\u4ee5\u5c1d\u8bd5\u4ee5\u4e0b\u65b9\u6cd5\u83b7\u53d6\u5916\u7f51DNS\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528DNS\u67e5\u8be2\u5e94\u7528\u7a0b\u5e8f\uff1a\u5728Google 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