post 请求工具类

 

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import com.alibaba.fastjson.JSONObject; import lombok.extern.slf4j.Slf4j;   import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import java.io.*; import java.net.*; import java.nio.charset.StandardCharsets;   @Slf4j public class PostRequestUtils {       public PostRequestUtils() {     }       /**      * 发送POST请求并返回结果      *      * @param proxyAddress 代理服务器地址      * @param proxyPort    代理服务器端口      * @param postUrl      请求URL      * @param data         请求数据      * @return 返回结果      * @throws Exception 抛出异常      */     public String sendMsg(String proxyAddress, String proxyPort, String postUrl, String data) throws Exception {         PrintWriter out = null;         BufferedReader reader = null;         String result = null;         String returnCode = null;           try {             if (data != null && !data.isEmpty()) {                 // 创建连接                 URL url = new URL(postUrl);                 // 忽略证书校验                 ignoreSsl(postUrl);                 // 设置代理                 HttpURLConnection connection = createConnection(url, proxyAddress, proxyPort);                   connection.setDoOutput(true);                 connection.setDoInput(true);                 connection.setRequestMethod("POST");                 connection.setUseCaches(false);                 connection.setInstanceFollowRedirects(false);                 connection.setRequestProperty("Charset", "UTF-8");                 connection.setRequestProperty("Content-Type", "text/html;charset=UTF-8");                 connection.setRequestProperty("accept", "*/*");                 connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");                 connection.setRequestProperty("Connection", "Keep-Alive");                   connection.connect();                   // POST请求                 out = new PrintWriter(new OutputStreamWriter(connection.getOutputStream(), StandardCharsets.UTF_8), true);                 out.write(data);                 out.flush();                 out.close();                   // 从HTTP取得返回结果                 reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));                 StringBuilder sb = new StringBuilder();                 String line;                 while ((line = reader.readLine()) != null) {                     sb.append(line);                 }                 returnCode = parseReturnMsg(sb.toString());                 log.info("接口返回：" + returnCode);                 reader.close();                 // 断开连接                 connection.disconnect();             }         } catch (IOException e) {             log.error("发生异常: {}", e.getMessage(), e);         } finally {             closeQuietly(out);             closeQuietly(reader);         }         return returnCode;     }       /**      * 解析返回的消息      *      * @param jsonData JSON格式的返回数据      * @return 解析后的结果      */     public String parseReturnMsg(String jsonData) {         try {             log.info("接收到的JSON数据: {}", jsonData);             JSONObject jsonObject = JSONObject.parseObject(jsonData);             JSONObject result = jsonObject.getJSONObject("result");             return result.getString("code");         } catch (Exception e) {             log.error("解析JSON数据时发生异常: {}", e.getMessage(), e);         }         return null;     }       /**      * 读取输入流并返回字节数组      *      * @param inStream 输入流      * @return 字节数组      * @throws Exception 抛出异常      */     public static byte[] readInputStream(InputStream inStream) throws Exception {         try (ByteArrayOutputStream outStream = new ByteArrayOutputStream()) {             byte[] buffer = new byte[1024];             int len;             while ((len = inStream.read(buffer)) != -1) {                 outStream.write(buffer, 0, len);             }             return outStream.toByteArray();         } finally {             inStream.close();         }     }       /**      * 忽略SSL证书校验      *      * @param postUrl 请求URL      * @throws Exception 抛出异常      */     public static void ignoreSsl(String postUrl) throws Exception {         HostnameVerifier hv = (url, session) -> {             log.warn("警告: URL Host: {} vs. {}", url, session.getPeerHost());             return true;         };         trustAllHttpsCertificates();         HttpsURLConnection.setDefaultHostnameVerifier(hv);     }       /**      * 信任所有HTTPS证书      *      * @throws Exception 抛出异常      */     private static void trustAllHttpsCertificates() throws Exception {         javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[]{new miTM()};         javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext.getInstance("SSL");         sc.init(null, trustAllCerts, null);         HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());     }       /**      * 自定义信任管理器      */     static class miTM implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {         public java.security.cert.X509Certificate[] getAcceptedIssuers() {             return null;         }           public boolean isServerTrusted(java.security.cert.X509Certificate[] certs) {             return true;         }           public boolean isClientTrusted(java.security.cert.X509Certificate[] certs) {             return true;         }           public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {         }           public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {         }     }       /**      * 向指定URL发送GET方法的请求      *      * @param url 请求URL      * @return 返回结果      */     public static String get(String url) {         BufferedReader in = null;         try {             URL realUrl = new URL(url);             // 创建代理服务器             InetSocketAddress addr = new InetSocketAddress("10.12.129.9", 8080);             Proxy proxy = new Proxy(Proxy.Type.HTTP, addr); // HTTP代理               // 不使用代理             URLConnection connection = realUrl.openConnection();             // 使用代理             // URLConnection connection = realUrl.openConnection(proxy);               // 设置通用的请求属性             connection.setRequestProperty("accept", "*/*");             connection.setRequestProperty("connection", "Keep-Alive");             connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");             connection.setRequestProperty("Content-type", "application/x-www-form-urlencoded;");               // 建立实际的连接             connection.connect();               // 读取URL的响应             in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));             StringBuilder result = new StringBuilder();             String line;             while ((line = in.readLine()) != null) {                 result.append(line);             }             return result.toString();         } catch (Exception e) {             log.error("发生异常: {}", e.getMessage(), e);         } finally {             closeQuietly(in);         }         return "";     }       /**      * 关闭PrintWriter，忽略关闭时的异常      *      * @param out PrintWriter对象      */     private static void closeQuietly(PrintWriter out) {         if (out != null) {             try {                 out.close();             } catch (Exception ignored) {             }         }     }       /**      * 关闭BufferedReader，忽略关闭时的异常      *      * @param reader BufferedReader对象      */     private static void closeQuietly(BufferedReader reader) {         if (reader != null) {             try {                 reader.close();             } catch (Exception ignored) {             }         }     }       /**      * 创建HTTP连接      *      * @param url          请求URL      * @param proxyAddress 代理服务器地址      * @param proxyPort    代理服务器端口      * @return HttpURLConnection对象      * @throws IOException 抛出IO异常      */     private static HttpURLConnection createConnection(URL url, String proxyAddress, String proxyPort) throws IOException {         if (proxyPort == null || Integer.parseInt(proxyPort) == 0) {             return (HttpURLConnection) url.openConnection();         } else {             Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyAddress, Integer.parseInt(proxyPort)));             return (HttpURLConnection) url.openConnection(proxy);         }     } }