Java http 接口请求-Toy模板网

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1、post请求

 /**
     * POST请求
     *
     * @param requestUrl 请求地址
     * @param param      请求数据
     * @return
     */
    public static String post(String requestUrl, String param,String authtoken) {

        HttpURLConnection connection = null;
        InputStream is = null;
        OutputStream os = null;
        BufferedReader br = null;
        String result = null;

        try {
            trustAllHosts();

            /** 创建远程url连接对象 */
            URL url = new URL(requestUrl);

            /** 通过远程url对象打开一个连接，强制转换为HttpUrlConnection类型 */
            connection = (HttpURLConnection) url.openConnection();

            /** 设置连接方式：POST */
            connection.setRequestMethod("POST");
            /** 设置连接主机服务器超时时间：15000毫秒 */
            connection.setConnectTimeout(15000);
            /** 设置读取远程返回的数据时间：60000毫秒 */
            connection.setReadTimeout(60000);

            /** 设置是否向httpUrlConnection输出，设置是否从httpUrlConnection读入，此外发送post请求必须设置这两个 */
            // 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
            connection.setDoOutput(true);
            // 默认值为：true，当前向远程服务读取数据时，设置为true，该参数可有可无
            connection.setDoInput(true);

            /** 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)");
            // 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式
            connection.setRequestProperty("Content-Type", "application/json;charset=utf-8");
            connection.setRequestProperty("Auth-Token", authtoken);

            /** 通过连接对象获取一个输出流 */
            os = connection.getOutputStream();
            /** 通过输出流对象将参数写出去/传输出去，它是通过字节数组写出的 */
            // 若使用os.print(param);则需要释放缓存：os.flush();即使用字符流输出需要释放缓存，字节流则不需要
            if (param != null && param.length() > 0) {
                os.write(param.getBytes());
            }

            /** 请求成功：返回码为200 */
            if (connection.getResponseCode() == 200) {
                /** 通过连接对象获取一个输入流，向远程读取 */
                is = connection.getInputStream();
                /** 封装输入流is，并指定字符集 */
                br = new BufferedReader(new InputStreamReader(is, "UTF-8"));

                /** 存放数据 */
                StringBuffer sbf = new StringBuffer();
                String line = null;
                while ((line = br.readLine()) != null) {
                    sbf.append(line);
                    sbf.append("\r\n");
                }
                result = sbf.toString();
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            /** 关闭资源 */
            try {

                if (null != br) {
                    br.close();
                }

                if (null != is) {
                    is.close();
                }

                if (null != os) {
                    os.close();
                }

            } catch (Exception e) {
                e.printStackTrace();
            }

            /** 关闭远程连接 */
            // 断开连接，最好写上，disconnect是在底层tcp socket链接空闲时才切断。如果正在被其他线程使用就不切断。
            // 固定多线程的话，如果不disconnect，链接会增多，直到收发不出信息。写上disconnect后正常一些
            connection.disconnect();

            System.out.println("--------->>> POST request end <<<----------");
        }

        return result;
    }

2、put请求

/**
     * put请求 上传文件
     *
     * @param requestUrl 请求地址
     * @return
     */
    public static int put(String requestUrl) {
        InputStream is = null;
        OutputStream os = null;
        BufferedReader br = null;
        String result = null;

        int responseCode = 0;
        try {
            File file = new File("测试.pdf");
            URL apiUrl = new URL(requestUrl);
            // 创建一个信任所有证书的 TrustManager
            TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        public X509Certificate[] getAcceptedIssuers() {
                            return null;
                        }

                        public void checkClientTrusted(X509Certificate[] certs, String authType) {
                        }

                        public void checkServerTrusted(X509Certificate[] certs, String authType) {
                        }
                    }
            };
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());

            HttpURLConnection connection = (HttpURLConnection) apiUrl.openConnection();
            connection.setRequestMethod("PUT");
            connection.setDoOutput(true);
            connection.setRequestProperty("Content-Type", "application/octet-stream");

            try (FileInputStream fileInputStream = new FileInputStream(file);
                 DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = fileInputStream.read(buffer)) != -1) {
                    outputStream.write(buffer, 0, bytesRead);
                }
            }
            responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                // 上传成功
                System.out.println("File uploaded successfully");
            } else {
                // 上传失败
                System.out.println("File upload failed with response code: " + responseCode);
            }
            connection.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return responseCode;
    }