独享代理 Java 示例

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import okhttp3.Credentials;
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import okhttp3.OkHttpClient;
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import okhttp3.Request;
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import okhttp3.Response;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.net.Proxy;
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public class Main {
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    private static String getenv(String key, String fallback) {
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        String value = System.getenv(key);
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        return (value != null && !value.isBlank()) ? value : fallback;
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    }
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    public static void main(String[] args) throws IOException {
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        String host = getenv("PRIVATE_HOST", "s1.ip.16yun.cn");
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        int port = Integer.parseInt(getenv("PRIVATE_PORT", "39010"));
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        String user = getenv("PRIVATE_USERNAME", getenv("PRIVATE_USER", null));
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        String pass = getenv("PRIVATE_PASSWORD", getenv("PRIVATE_PASS", null));
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        String target = getenv("TARGET_URL", "https://httpbin.org/ip");
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        String base = getenv("PRIVATE_BASE", "http://s1.ip.16yun.cn:887").replaceAll("/+$", "");
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        if (user == null || pass == null) {
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            throw new IllegalArgumentException("Missing PRIVATE_USERNAME/PRIVATE_PASSWORD");
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        }
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        OkHttpClient http = new OkHttpClient();
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        for (String path : new String[]{"current-ip", "switch-ip", "update"}) {
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            String url = String.format("%s/simple/%s?username=%s&password=%s", base, path, user, pass);
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            try (Response resp = http.newCall(new Request.Builder().url(url).build()).execute()) {
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                System.out.println(path + " " + resp.code());
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                System.out.println(resp.body() != null ? resp.body().string() : "");
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            }
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        }
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        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(host, port));
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        OkHttpClient client = new OkHttpClient.Builder()
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            .proxy(proxy)
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            .proxyAuthenticator((route, response) ->
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                response.request().newBuilder()
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                    .header("Proxy-Authorization", Credentials.basic(user, pass))
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                    .build())
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            .build();
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        try (Response resp = client.newCall(new Request.Builder().url(target).build()).execute()) {
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            System.out.println(resp.code());
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            System.out.println(resp.body() != null ? resp.body().string() : "");
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        }
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    }
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}