快速解决Java项目在复杂网络环境下访问外网不通的问题

-DproxyHost=127.0.0.1 -DproxyPort=7897

java -DproxyHost=127.0.0.1 -DproxyPort=7897 -jar your-application.jar

public class ProxyConfig {
    public static void setupProxy() {
        System.setProperty("proxyHost", "127.0.0.1");
        System.setProperty("proxyPort", "7897");
        System.setProperty("proxySet", "true");
    }
}

public class ProxyCheck {
    public static void main(String[] args) {
        String host = System.getProperty("proxyHost");
        String port = System.getProperty("proxyPort");
        System.out.println("Proxy Host: " + host);
        System.out.println("Proxy Port: " + port);
    }
}

telnet 127.0.0.1 7897

try {
    // 网络请求代码
} catch (Exception e) {
    System.err.println("网络连接失败，请检查代理设置: " + e.getMessage());
}

# Linux/Mac
export http_proxy=http://127.0.0.1:7897
export https_proxy=http://127.0.0.1:7897
# Windows
set http_proxy=http://127.0.0.1:7897
set https_proxy=http://127.0.0.1:7897

<!-- Maven 依赖 -->
<dependency>
    <groupId>com.github.monkeywie</groupId>
    <artifactId>proxyee</artifactId>
    <version>1.6.5</version>
</dependency>