http使用代理

最新推荐文章于 2025-01-02 19:40:48 发布

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最新推荐文章于 2025-01-02 19:40:48 发布

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CC 4.0 BY-SA版权

文章标签： java json

原文链接：http://www.cnblogs.com/chenglc/p/8308647.html

本文提供了使用HttpUrlConnection和HttpClient进行HTTP及HTTPS请求时配置代理的方法。包括如何设置代理服务器地址和端口，并展示了如何为连接设置超时时间等关键参数。

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直接上代码：

HttpUrlConnection使用代理：

 private static HttpURLConnection getConnection(URL url, String method, String ctype)
            throws IOException {
        HttpURLConnection conn;
        if (hasProxy) {
            Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
            conn = (HttpURLConnection)url.openConnection(proxy);
        } else {
            conn = (HttpURLConnection) url.openConnection();
        }
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestMethod(method);
        conn.setRequestProperty("Content-Type", "application/json");
        conn.setRequestProperty("Connection", "Keep-Alive");
        return conn;
    }

https：

 private static HttpsURLConnection getConnectionHttps(URL url, String method, String ctype)
            throws IOException {

        SSLContext sslContext = null;
        try {
            sslContext = SSLContext.getInstance("TLS"); // 或SSL
            X509TrustManager[] xtmArray = new X509TrustManager[]{new myX509TrustManager()};
            sslContext.init(null, xtmArray, new java.security.SecureRandom());
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        }
        if (sslContext != null) {
            HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
        }
        HttpsURLConnection.setDefaultHostnameVerifier(new myHostnameVerifier());
        HttpsURLConnection conn;
        if (hasProxy) {
            Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHost, proxyPort));
            conn = (HttpsURLConnection)url.openConnection(proxy);
        } else {
            conn = (HttpsURLConnection) url.openConnection();
        }
        conn.setDoInput(true);
        conn.setDoOutput(true);
        conn.setRequestMethod(method);
        conn.setRequestProperty("Content-Type", ctype);
        conn.setRequestProperty("Connection", "Keep-Alive");
        return conn;
    }

httpClent:

RequestConfig requestConfig = null;
            if(StringUtil.isEmpty(proxyHost)){
                requestConfig = RequestConfig.custom()
                        .setSocketTimeout(connectTimeout)
                        .setConnectTimeout(connectTimeout)
                        .build();
            }else{    //代理
                HttpHost proxy = new HttpHost(proxyHost,proxyPort);
                requestConfig = RequestConfig.custom()
                        .setProxy(proxy)
                        .setSocketTimeout(connectTimeout)
                        .setConnectTimeout(connectTimeout)
                        .build();
            }

共同代码：

   private static String proxyHost;
    private static int proxyPort;
    private static boolean hasProxy = false;

    public void setProxy(String proxyHost,int proxyPort) {
        this.proxyHost = proxyHost;
        this.proxyPort = proxyPort;
        hasProxy = true;
    }