Java设置网络代理的坑

深碍√TFBOYSˉ_ 2024-04-17 16:40 20阅读 0赞

import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.*;
    import java.util.Base64;
    
    public class Test {
        public static void main(String[] args) {
            try {
                PrintWriter out = null;
                BufferedReader in = null;
                String result = "";
                System.setProperty("http.proxyHost", "10.0.60.78");
                System.setProperty("http.proxyPort", "8080");
                System.setProperty("https.proxyHost", "10.0.60.78");
                System.setProperty("https.proxyPort", "8080");
                Authenticator.setDefault(new BasicAuthenticator("generalichina\\QTMP002", "Mis09876"));
                URL realUrl = new URL("https://www.iteye.com/problems/28841");
                // 打开和URL之间的连接
                HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
                // 设置通用的请求属性
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("Content-Type", "application/json");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent",
                        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                conn.setRequestMethod("GET");
                // 获取URLConnection对象对应的输出流
                // flush输出流的缓冲
                // 定义BufferedReader输入流来读取URL的响应
                in = new BufferedReader(
                        new InputStreamReader(conn.getInputStream(),"utf-8"));
                String line;
                while ((line = in.readLine()) != null) {
                    result += line;
                }
                System.out.println(result);
            } catch (Exception e) {
                e.printStackTrace();
            }
    
        }
    }
    
    
    class BasicAuthenticator extends Authenticator {
        String userName;
        String password;
    
        public BasicAuthenticator(String userName, String password) {
            this.userName = userName;
            this.password = password;
        }
    
        /**
         * Called when password authorization is needed. Subclasses should
         * override the default implementation, which returns null.
         *
         * @return The PasswordAuthentication collected from the
         * user, or null if none is provided.
         */
        @Override
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(userName, password.toCharArray());
        }
    }

# 该实现方法可以放在多线程的main主线程中，依然起作用！！！ #

# 支持真正的http和真正有证书的https请求有效！！！ #