Java使用代理发送Post请求

最新推荐文章于 2023-10-27 10:00:20 发布

原创最新推荐文章于 2023-10-27 10:00:20 发布 · 1.5k 阅读

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本文详细介绍了如何使用Java进行HTTPS的POST请求，包括设置请求头、使用代理、处理响应等关键步骤，提供了完整的代码示例。

/**
*@param URL 需要请求的地址
**/
private String requestHttpsPost() throws Exception {
        String result;
        HttpPost post = new HttpPost(URL);
        CloseableHttpClient client = null;
        CloseableHttpResponse response = null;
        HttpEntity entity = null;
        try {
            post.setHeader("Accept", "application/json, text/javascript, */*; q=0.01");
    
            post.setHeader("X-Requested-With", "XMLHttpRequest");
            post.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
            List<BasicNameValuePair> formparam = new ArrayList<>();
            //表单请求参数
            post.setEntity(new UrlEncodedFormEntity(formparam));
            // 设置客户端超时时间
            RequestConfig config = RequestConfig.custom()
                    .setSocketTimeout(50000).setConnectTimeout(50000)
                    .setConnectionRequestTimeout(50000).build();
            HttpClientBuilder httpClientBuilder = HttpClients.custom()
                    .setDefaultRequestConfig(config);
            /*** 
            *ForeignProxyHelp为自行封装的一个代理类
            */
            ChannelProxy channelProxy = foreignProxyHelp.getProxy();
            if (channelProxy != null) {
                logger.info(channelProxy.getStunnelHost() + "---------------");
                //取代理服务器的ip和端口
                HttpHost targetHost = new HttpHost(
                        channelProxy.getStunnelHost(),
                        Integer.valueOf(channelProxy.getStunnelPort()));
                CredentialsProvider credsProvider = new BasicCredentialsProvider();
                credsProvider.setCredentials(
                        new AuthScope(targetHost.getHostName(),
                                targetHost.getPort()),
                        new UsernamePasswordCredentials(channelProxy.getProxyAccounts(),
                                channelProxy.getPassword()));
                httpClientBuilder.setDefaultCredentialsProvider(credsProvider);
                httpClientBuilder.setProxy(targetHost);
            }
            logger.info("设置代理完成...");
            client = httpClientBuilder.build();
            logger.info("获取客户端请求...");
            // 执行POST请求
            response = client.execute(post);
            entity = response.getEntity();
            int statusCode = response.getStatusLine().getStatusCode();
            logger.info("执行请求结束...响应状态码:" + statusCode);
            result = EntityUtils.toString(entity, "UTF-8");
        } catch (Exception e) {
            if (post != null) {
                post.abort();
            }
            throw e;
        } finally {
            EntityUtils.consume(entity);
            // 关闭连接 释放资源
            if (post != null) {
                post.releaseConnection();
            }
            if (response != null) {
                response.close();
            }
            if (client != null) {
                client.close();
            }
        }
        return result;
    }