全部产品
Search
文档中心

ID Verification:IDV服务端示例代码

更新时间:Nov 18, 2025

我们建议您使用使用OpenAPI调试和集成服务端API文档中的在线调试和示例代码获取章节,基于阿里云OpenAPI门户获取集成实例代码。本文档中,我们额外提供了少量可以直接运行的示例代码供您参考。

示例代码概览

编程语言

集成方式

凭据初始化方式

示例代码

Java

SDK

使用RAM子用户AK

Java+SDK+AK

使用OIDCRoleArn

SDK+OIDCRoleArn

原生HTTPS(不推荐)

使用RAM子用户AK

原生http+AK

使用OIDCRoleArn

原生http+OIDCRoleArn

Java+SDK+AK

  • 编程语言:Java

  • 集成方式:SDK

  • 凭据初始化方式:使用RAM子用户AK

  • 依赖:

    <dependency>
       <groupId>com.aliyun</groupId>
       <artifactId>cloudauth_intl20220809</artifactId>
       <version>***</version> // 请访问SDK中心获取最新版本:https://next.api.alibabacloud.com/api-tools/sdk/Cloudauth-intl?version=2022-08-09&language=java-tea&tab=primer-doc
    </dependency>
  • 示例代码

    import com.aliyun.cloudauth_intl20220809.Client;
    import com.aliyun.cloudauth_intl20220809.models.InitializeRequest;
    import com.aliyun.cloudauth_intl20220809.models.InitializeResponse;
    import com.aliyun.cloudauth_intl20220809.models.InitializeResponseBody;
    import com.aliyun.teaopenapi.models.Config;
    
    public class Sample {
    
        private static Client client = null;
    
        static {
            try {
                // 构建Client
                client =  createClient();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    
        public static void main(String[] args) throws Exception {
            try {
                // 1.构造请求参数(本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
                InitializeRequest request = new InitializeRequest();
                request.setProductCode("***");
                request.setMerchantBizId("***");
                request.setMerchantUserId("***");
                request.setMetaInfo("***");
                request.setDocType("********");
                request.setAuthorize("*");
    
                // 2.接口调用(本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
                InitializeResponse response = client.initialize(request);
    
                // 3.获取调用结果
                Integer statusCode = response.getStatusCode();// 调用状态码
                String code = response.getBody().getCode();// 调用code码
                InitializeResponseBody.InitializeResponseBodyResult result = response.getBody().getResult(); // 调用返回
            } catch (Exception e) {
                // 此处仅做打印展示,请谨慎对待异常处理,在工程项目中切勿直接忽略异常。
                e.printStackTrace();
            }
        }
    
    
        /**
         * 构建Client
         * @return
         * @throws Exception
         */
        public static Client createClient() throws Exception {
            Config config = new Config();
            // 设置账号ak,请不要将明文AK直接写在代码中,建议从环境变量中获取,否则将导致安全漏洞
            config.setAccessKeyId("<your access key id>");
            config.setAccessKeySecret("<your access key secret>");
            // 设置endpoint和regionId(本示例以香港为例,使用时请替换为您实际需要的endpoint)
            config.setEndpoint("cloudauth-intl.cn-hongkong.aliyuncs.com");
            config.setRegionId("cn-hongkong");
            return new Client(config);
        }
    }

SDK+OIDCRoleArn

  • 编程语言:Java

  • 集成方式:SDK

  • 凭据初始化方式:使用OIDCRoleArn

  • 依赖:

    <dependency>
       <groupId>com.aliyun</groupId>
       <artifactId>credentials-java</artifactId>
       <version>***</version>
    </dependency> // credentials-java的最新版本请查阅:https://central.sonatype.com/artifact/com.aliyun/credentials-java
      
    <dependency>
       <groupId>com.aliyun</groupId>
       <artifactId>cloudauth_intl20220809</artifactId>
       <version>***</version> // cloudauth_intl20220809 的最新版本请查阅:https://next.api.alibabacloud.com/api-tools/sdk/Cloudauth-intl?version=2022-08-09&language=java-tea&tab=primer-doc
    </dependency>
  • 示例代码

    import com.aliyun.cloudauth_intl20220809.Client;
    import com.aliyun.cloudauth_intl20220809.models.InitializeRequest;
    import com.aliyun.cloudauth_intl20220809.models.InitializeResponse;
    import com.aliyun.cloudauth_intl20220809.models.InitializeResponseBody;
    import com.aliyun.teaopenapi.models.Config;
    
    public class Sample {
    
        private static Client client = null;
    
        static {
            try {
                // 构建 client
                client =  createClient();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    
        public static void main(String[] args) throws Exception {
            try {
                // 1.构造请求参数(本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
                InitializeRequest request = new InitializeRequest();
                request.setProductCode("***");
                request.setMerchantBizId("***");
                request.setMerchantUserId("***");
                request.setMetaInfo("***");
                request.setDocType("********");
                request.setAuthorize("*");
    
                // 2.接口调用(本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
                InitializeResponse response = client.initialize(request);
    
                // 3.获取调用结果
                Integer statusCode = response.getStatusCode();// 状态码
                String code = response.getBody().getCode();// code码
                InitializeResponseBody.InitializeResponseBodyResult result = response.getBody().getResult();// 返回详细内容
            } catch (Exception e) {
                // 此处仅做打印展示,请谨慎对待异常处理,在工程项目中切勿直接忽略异常。
                e.printStackTrace();
            }
        }
    
        /**
         * 构建Client
         * @return
         * @throws Exception
         */
        public static Client createClient() throws Exception {
            Config config = new Config();
            // 设置凭据凭证
            config.setCredential(getCredentialClient());
            // 设置endpoint和regionId(本示例以香港为例,使用时请替换为您实际需要的endpoint)
            config.setEndpoint("cloudauth-intl.cn-hongkong.aliyuncs.com");
            config.setRegionId("cn-hongkong");
            return new Client(config);
        }
    
        public static com.aliyun.credentials.Client getCredentialClient() throws Exception {
            com.aliyun.credentials.models.Config credentialConfig = new com.aliyun.credentials.models.Config();
            credentialConfig.setType("oidc_role_arn");
            // RAM角色名称ARN,可以通过环境变量ALIBABA_CLOUD_ROLE_ARN设置RoleArn
            credentialConfig.setRoleArn("<RoleArn>");
            // OIDC提供商ARN,可以通过环境变量ALIBABA_CLOUD_OIDC_PROVIDER_ARN设置OidcProviderArn
            credentialConfig.setOidcProviderArn("<OidcProviderArn>");
            // OIDC Token文件路径,可以通过环境变量ALIBABA_CLOUD_OIDC_TOKEN_FILE设置OidcTokenFilePath
            credentialConfig.setOidcTokenFilePath("<OidcTokenFilePath>");
            // 角色会话名称,可以通过环境变量ALIBABA_CLOUD_ROLE_SESSION_NAME设置RoleSessionName
            credentialConfig.setRoleSessionName("<RoleSessionName>");
            // 设置更小的权限策略,非必填。示例值:{"Statement": [{"Action": ["*"],"Effect": "Allow","Resource": ["*"]}],"Version":"1"}
            credentialConfig.setPolicy("<Policy>");
            // 设置session过期时间
            credentialConfig.setRoleSessionExpiration(3600);
            return new com.aliyun.credentials.Client(credentialConfig);
        }
    }

原生http+AK

  • 编程语言:Java

  • 集成方式:原生HTTPS

  • 凭据初始化方式:使用RAM子用户AK

  • 依赖:

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.13</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.9.0</version>
    </dependency>
  • 示例代码

    import com.google.gson.Gson;
    import com.google.gson.GsonBuilder;
    import org.apache.http.client.methods.CloseableHttpResponse;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.client.methods.HttpUriRequest;
    import org.apache.http.client.utils.URIBuilder;
    import org.apache.http.entity.ByteArrayEntity;
    import org.apache.http.entity.ContentType;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.util.EntityUtils;
    
    import javax.crypto.Mac;
    import javax.crypto.spec.SecretKeySpec;
    import javax.xml.bind.DatatypeConverter;
    import java.io.IOException;
    import java.io.UnsupportedEncodingException;
    import java.net.URISyntaxException;
    import java.net.URLEncoder;
    import java.nio.charset.StandardCharsets;
    import java.security.MessageDigest;
    import java.text.SimpleDateFormat;
    import java.util.*;
    
    public class Sample {
    
        /**
         * 请求示例
         * @param args
         * @throws IOException
         */
        public static void main(String[] args) throws IOException {
    
            // 设置API名称 (本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
            String action= "Initialize";
    
            // IDV接口版本号固定为2022-08-09
            String version=  "2022-08-09";
    
            // 设置endpoint(本示例以香港为例,使用时请替换为您实际需要的endpoint)
            String host = "cloudauth-intl.cn-hongkong.aliyuncs.com";
    
            // 设置账号ak,请不要将明文AK直接写在代码中,建议从环境变量中获取,否则将导致安全漏洞
            String accessKey = "<your access key id>";
            String accessSecret = "<your access key secret>";
    
            // API请求参数 (本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
            Map<String, String> params = new HashMap<>();
            params.put("MerchantBizId", "**********");
            params.put("ProductCode", "**********");
            params.put("MerchantUserId", "**********");
            params.put("MetaInfo", "**********");
    
            // 1、构建服务API请求
            CallRequest callRequest = buildIDVCallRequest(accessKey, accessSecret, action, version, host, params);
    
            // 2、调用IDV服务API
            String result = callApi(callRequest);
    
            // 3、输出结果
            System.out.println(result);
        }
    
        /**
         * 构造请求IDV的请求参数,仅示例参考,请根据实际情况传入。
         * @return
         */
        private static CallRequest buildIDVCallRequest(String accessKeyId, String accessKeySecret, String action, String version, String host, Map<String, String> params) {
            // 请求地址
            String httpMethod = "POST";
            String canonicalUri = "/";
    
            CallRequest callRequest = new CallRequest(httpMethod, canonicalUri, host, action, version, accessKeyId, accessKeySecret, null);
    
            Gson gson = (new GsonBuilder()).disableHtmlEscaping().create();
            callRequest.body = gson.toJson(params).getBytes(StandardCharsets.UTF_8);
            callRequest.headers.put("content-type", "application/json");
            // 计算签名并设置
            String authorization = getAuthorization(callRequest);
            callRequest.headers.put("Authorization", authorization);
            return callRequest;
        }
    
        private static String callApi(CallRequest callRequest) {
            try {
                // 通过HttpClient发送请求
                String url = "https://" + callRequest.host + callRequest.canonicalUri;
                URIBuilder uriBuilder = new URIBuilder(url);
                // 添加请求参数
                for (Map.Entry<String, Object> entry : callRequest.queryParam.entrySet()) {
                    uriBuilder.addParameter(entry.getKey(), String.valueOf(entry.getValue()));
                }
                HttpUriRequest httpRequest;
    
                HttpPost httpPost = new HttpPost(uriBuilder.build());
                if (callRequest.body != null) {
                    httpPost.setEntity(new ByteArrayEntity(callRequest.body, ContentType.create(callRequest.headers.get("content-type"))));
                }
                httpRequest = httpPost;
    
                // 添加http请求头
                for (Map.Entry<String, String> entry : callRequest.headers.entrySet()) {
                    httpRequest.addHeader(entry.getKey(), String.valueOf(entry.getValue()));
                }
                // 发送请求
                try (CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = httpClient.execute(httpRequest)) {
                    String result = EntityUtils.toString(response.getEntity(), "UTF-8");
                    return result;
                } catch (IOException e) {
                    // 异常处理
                    System.out.println("Failed to send request");
                    e.printStackTrace();
                }
            } catch (URISyntaxException e) {
                // 异常处理
                System.out.println("Invalid URI syntax");
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 该方法用于根据传入的HTTP请求方法、规范化的URI、查询参数等,计算并生成授权信息。
         */
        private static String getAuthorization(CallRequest callRequest) {
            try {
                // 处理queryParam中参数值为List、Map类型的参数,将参数平铺
                TreeMap<String, Object> newQueryParam = new TreeMap<>();
                processObject(newQueryParam, "", callRequest.queryParam);
                callRequest.queryParam = newQueryParam;
                // 步骤 1:拼接规范请求串
                // 请求参数,当请求的查询字符串为空时,使用空字符串作为规范化查询字符串
                StringBuilder canonicalQueryString = new StringBuilder();
                callRequest.queryParam.entrySet().stream().map(entry -> percentCode(entry.getKey()) + "="
                        + percentCode(String.valueOf(entry.getValue()))).forEachOrdered(queryPart -> {
                    // 如果canonicalQueryString已经不是空的,则在查询参数前添加"&"
                    if (canonicalQueryString.length() > 0) {
                        canonicalQueryString.append("&");
                    }
                    canonicalQueryString.append(queryPart);
                });
    
                // 计算请求体的哈希值
                String requestPayload = ""; // 请求体,当请求正文为空时,比如GET请求,RequestPayload固定为空字符串
                String hashedRequestPayload = callRequest.body != null ? sha256Hex(callRequest.body) : sha256Hex(requestPayload.getBytes(StandardCharsets.UTF_8));
                callRequest.headers.put("x-acs-content-sha256", hashedRequestPayload);
                // 构造请求头,多个规范化消息头,按照消息头名称(小写)的字符代码顺序以升序排列后拼接在一起
                StringBuilder canonicalHeaders = new StringBuilder();
                // 已签名消息头列表,多个请求头名称(小写)按首字母升序排列并以英文分号(;)分隔
                StringBuilder signedHeadersSb = new StringBuilder();
                callRequest.headers.entrySet().stream().filter(entry -> entry.getKey().toLowerCase().startsWith("x-acs-") || "host".equalsIgnoreCase(entry.getKey()) || "content-type".equalsIgnoreCase(entry.getKey())).sorted(Map.Entry.comparingByKey()).forEach(entry -> {
                    String lowerKey = entry.getKey().toLowerCase();
                    String value = String.valueOf(entry.getValue()).trim();
                    canonicalHeaders.append(lowerKey).append(":").append(value).append("\n");
                    signedHeadersSb.append(lowerKey).append(";");
                });
                String signedHeaders = signedHeadersSb.substring(0, signedHeadersSb.length() - 1);
                String canonicalRequest = callRequest.httpMethod + "\n" + callRequest.canonicalUri + "\n" + canonicalQueryString + "\n" + canonicalHeaders + "\n" + signedHeaders + "\n" + hashedRequestPayload;
    
                // 步骤 2:拼接待签名字符串
                String hashedCanonicalRequest = sha256Hex(canonicalRequest.getBytes(StandardCharsets.UTF_8)); // 计算规范化请求的哈希值
                String stringToSign = "ACS3-HMAC-SHA256" + "\n" + hashedCanonicalRequest;
    
                // 步骤 3:计算签名
                String signature = DatatypeConverter.printHexBinary(hmac256(callRequest.accessKeySecret.getBytes(StandardCharsets.UTF_8), stringToSign)).toLowerCase();
    
                // 步骤 4:拼接 Authorization
                return "ACS3-HMAC-SHA256" + " " + "Credential=" + callRequest.accessKeyId + ",SignedHeaders=" + signedHeaders + ",Signature=" + signature;
            } catch (Exception e) {
                // 异常处理
                e.printStackTrace();
                throw new RuntimeException("Get authorization failed.", e);
            }
        }
    
        /**
         * 递归处理对象,将复杂对象(如Map和List)展开为平面的键值对
         *
         * @param map   原始的键值对集合,将被递归地更新
         * @param key   当前处理的键,随着递归的深入,键会带有嵌套路径信息
         * @param value 对应于键的值,可以是嵌套的Map、List或其他类型
         */
        private static void processObject(Map<String, Object> map, String key, Object value) {
            // 如果值为空,则无需进一步处理
            if (value == null) {
                return;
            }
            if (key == null) {
                key = "";
            }
            // 当值为List类型时,遍历List中的每个元素,并递归处理
            if (value instanceof List<?>) {
                List<?> list = (List<?>) value;
                for (int i = 0; i < list.size(); ++i) {
                    processObject(map, key + "." + (i + 1), list.get(i));
                }
            } else if (value instanceof Map<?, ?>) {
                // 当值为Map类型时,遍历Map中的每个键值对,并递归处理
                Map<?, ?> subMap = (Map<?, ?>) value;
                for (Map.Entry<?, ?> entry : subMap.entrySet()) {
                    processObject(map, key + "." + entry.getKey().toString(), entry.getValue());
                }
            } else {
                // 对于以"."开头的键,移除开头的"."以保持键的连续性
                if (key.startsWith(".")) {
                    key = key.substring(1);
                }
                // 对于byte[]类型的值,将其转换为UTF-8编码的字符串
                if (value instanceof byte[]) {
                    map.put(key, new String((byte[]) value, StandardCharsets.UTF_8));
                } else {
                    // 对于其他类型的值,直接转换为字符串
                    map.put(key, String.valueOf(value));
                }
            }
        }
    
        /**
         * 使用HmacSHA256算法生成消息认证码(MAC)。
         *
         * @param secretKey 密钥,用于生成MAC的密钥,必须保密。
         * @param str       需要进行MAC认证的消息。
         * @return 返回使用HmacSHA256算法计算出的消息认证码。
         * @throws Exception 如果初始化MAC或计算MAC过程中遇到错误,则抛出异常。
         */
        public static byte[] hmac256(byte[] secretKey, String str) throws Exception {
            // 实例化HmacSHA256消息认证码生成器
            Mac mac = Mac.getInstance("HmacSHA256");
            // 创建密钥规范,用于初始化MAC生成器
            SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey, mac.getAlgorithm());
            // 初始化MAC生成器
            mac.init(secretKeySpec);
            // 计算消息认证码并返回
            return mac.doFinal(str.getBytes(StandardCharsets.UTF_8));
        }
    
        /**
         * 使用SHA-256算法计算字符串的哈希值并以十六进制字符串形式返回。
         *
         * @param input 需要进行SHA-256哈希计算的字节数组。
         * @return 计算结果为小写十六进制字符串。
         * @throws Exception 如果在获取SHA-256消息摘要实例时发生错误。
         */
        public static String sha256Hex(byte[] input) throws Exception {
            // 获取SHA-256消息摘要实例
            MessageDigest md = MessageDigest.getInstance("SHA-256");
            // 计算字符串s的SHA-256哈希值
            byte[] d = md.digest(input);
            // 将哈希值转换为小写十六进制字符串并返回
            return DatatypeConverter.printHexBinary(d).toLowerCase();
        }
    
        /**
         * 对指定的字符串进行URL编码。
         * 使用UTF-8编码字符集对字符串进行编码,并对特定的字符进行替换,以符合URL编码规范。
         *
         * @param str 需要进行URL编码的字符串。
         * @return 编码后的字符串。其中,加号"+"被替换为"%20",星号"*"被替换为"%2A",波浪号"%7E"被替换为"~"。
         */
        public static String percentCode(String str) {
            if (str == null) {
                throw new IllegalArgumentException("输入字符串不可为null");
            }
            try {
                return URLEncoder.encode(str, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException("UTF-8编码不被支持", e);
            }
        }
    
    
        private static class CallRequest {
            // HTTP Method
            private final String httpMethod;
            // 请求路径,当资源路径为空时,使用正斜杠(/)作为CanonicalURI
            private final String canonicalUri;
            // endpoint
            private final String host;
            // API name
            private final String xAcsAction;
            // API version
            private final String xAcsVersion;
            // accessKeyId
            private final String accessKeyId;
            // accessKeySecret
            private final String accessKeySecret;
            // STS令牌,非STS鉴权方式时,该参数为空
            private final String securityToken;
            // headers
            TreeMap<String, String> headers = new TreeMap<>();
            // body参数对应的字节数组,请求参数在元数据中显示"in":"body"或"in": "formData",表示参数放在body中
            byte[] body;
            // query参数,请求参数在元数据中显示"in":"query",表示参数拼接在请求URL上
            TreeMap<String, Object> queryParam = new TreeMap<>();
    
            public CallRequest(String httpMethod, String canonicalUri, String host, String xAcsAction, String xAcsVersion, String accessKeyId, String accessKeySecret, String securityToken) {
                this.httpMethod = httpMethod;
                this.canonicalUri = canonicalUri;
                this.host = host;
                this.xAcsAction = xAcsAction;
                this.xAcsVersion = xAcsVersion;
                this.accessKeyId = accessKeyId;
                this.accessKeySecret = accessKeySecret;
                this.securityToken = securityToken;
                initHeader();
            }
    
            // init headers
            private void initHeader() {
                headers.put("host", host);
                headers.put("x-acs-action", xAcsAction);
                headers.put("x-acs-version", xAcsVersion);
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
                sdf.setTimeZone(new SimpleTimeZone(0, "GMT")); // 设置日期格式化时区为GMT
                headers.put("x-acs-date", sdf.format(new Date()));
                headers.put("x-acs-signature-nonce", UUID.randomUUID().toString());
                if (securityToken != null) {
                    headers.put("x-acs-security-token", securityToken);
                }
            }
        }
    }
    

原生http+OIDCRoleArn

  • 编程语言:Java

  • 集成方式:原生HTTPS

  • 凭据初始化方式:使用OIDCRoleArn

  • 依赖:

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.13</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.9.0</version>
    </dependency>
    <dependency>
        <groupId>com.aliyun</groupId>
        <artifactId>sts20150401</artifactId>
        <version>1.1.7</version>
    </dependency>
  • 示例代码

    import com.aliyun.sts20150401.models.AssumeRoleWithOIDCResponse;
    import com.aliyun.sts20150401.models.AssumeRoleWithOIDCResponseBody;
    import com.aliyun.tea.TeaException;
    import com.google.gson.Gson;
    import com.google.gson.GsonBuilder;
    import org.apache.http.client.methods.*;
    import org.apache.http.client.utils.URIBuilder;
    import org.apache.http.entity.ByteArrayEntity;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.util.EntityUtils;
    import org.apache.http.entity.ContentType;
    
    import javax.crypto.Mac;
    import javax.crypto.spec.SecretKeySpec;
    import javax.xml.bind.DatatypeConverter;
    import java.io.IOException;
    import java.io.UnsupportedEncodingException;
    import java.net.URISyntaxException;
    import java.net.URLEncoder;
    import java.nio.charset.StandardCharsets;
    import java.security.MessageDigest;
    import java.text.SimpleDateFormat;
    import java.util.*;
    
    public class Sample {
    
        /**
         * STS客户端,用于获取临时安全令牌(STS Token)
         */
        private static com.aliyun.sts20150401.Client stsClient = null;
    
        static {
            com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config();
            // 设置sts服务的Endpoint(本示例以日本东京为例,使用时请替换为您实际需要的endpoint)
            config.endpoint = "sts.ap-northeast-1.aliyuncs.com";
            try {
                stsClient = new com.aliyun.sts20150401.Client(config);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    
        /**
         * 请求示例
         * @param args
         * @throws IOException
         */
        public static void main(String[] args) throws IOException {
    
            // 1、基于OIDC角色获取临时安全令牌(STS Token),有有效期,实际生产中可在有效期内缓存使用
    AssumeRoleWithOIDCResponseBody.AssumeRoleWithOIDCResponseBodyCredentials credentials = getSTSToken();
    
            // 设置API名称 (本示例以Initialize接口为例,使用时请替换为您实际需要的接口)
            String action= "Initialize";
    
            // IDV接口版本号固定为2022-08-09
            String version=  "2022-08-09";
            // 设置endpoint(本示例以香港为例,使用时请替换为您实际需要的endpoint)
            String host = "cloudauth-intl.cn-hongkong.aliyuncs.com";
    
            // API请求参数(仅示例参考,实际开发中需要根据实际情况传入)
            Map<String, String> params = new HashMap<>();
            params.put("MerchantBizId", "**********");
            params.put("ProductCode", "**********");
            params.put("MerchantUserId", "**********");
            params.put("MetaInfo", "**********");
    
            // 2、构建服务API请求
            CallRequest callRequest = buildIDVCallRequest(credentials, action, version, host, params);
    
    
            // 3、调用IDV服务API
            String result = callApi(callRequest);
    
            // 4、输出结果
            System.out.println(result);
        }
    
        /**
         * 构造请求IDV的请求参数,仅示例参考,请根据实际情况传入。
         * @return
         */
        private static CallRequest buildIDVCallRequest(AssumeRoleWithOIDCResponseBody.AssumeRoleWithOIDCResponseBodyCredentials credentials, String action, String version, String host, Map<String, String> params) {
            // 请求地址
            String httpMethod = "POST";
            String canonicalUri = "/";
    
            CallRequest callRequest = new CallRequest(httpMethod, canonicalUri, host, action, version, credentials.getAccessKeyId(), credentials.getAccessKeySecret(), credentials.getSecurityToken());
    
            Gson gson = (new GsonBuilder()).disableHtmlEscaping().create();
            callRequest.body = gson.toJson(params).getBytes(StandardCharsets.UTF_8);
            callRequest.headers.put("content-type", "application/json");
            // 计算签名并设置
            String authorization = getAuthorization(callRequest);
            callRequest.headers.put("Authorization", authorization);
            return callRequest;
        }
    
    
        /**
         * 获取扮演角色的临时身份凭证(STS token)
         * STS的参考文档:https://www.alibabacloud.com/help/zh/ram/product-overview/what-is-sts
         * 本示例是基于AssumeRoleWithOIDC方式,另外还可以通过AssumeRole、AssumeRoleWithOIDC等获取临时身份凭证,参考文档:https://www.alibabacloud.com/help/zh/ram/developer-reference/api-sts-2015-04-01-dir-role-assuming
         * @return
         */
        public static AssumeRoleWithOIDCResponseBody.AssumeRoleWithOIDCResponseBodyCredentials getSTSToken() {
            com.aliyun.sts20150401.models.AssumeRoleWithOIDCRequest assumeRoleWithOIDCRequest = new com.aliyun.sts20150401.models.AssumeRoleWithOIDCRequest()
                    .setOIDCProviderArn("***")
                    .setRoleArn("***")
                    .setDurationSeconds(3600L)
                    .setOIDCToken("***")
                    .setRoleSessionName("***");
            com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
            try {
                // 复制代码运行请自行打印 API 的返回值
                AssumeRoleWithOIDCResponse assumeRoleWithOIDCResponse = stsClient.assumeRoleWithOIDCWithOptions(assumeRoleWithOIDCRequest, runtime);
                return assumeRoleWithOIDCResponse.body.credentials;
            } catch (TeaException error) {
                // 此处仅做打印展示,请谨慎对待异常处理,在工程项目中切勿直接忽略异常。
                // 错误 message
                System.out.println(error.getMessage());
                // 诊断地址
                System.out.println(error.getData().get("Recommend"));
                com.aliyun.teautil.Common.assertAsString(error.message);
                throw new RuntimeException(error);
            } catch (Exception _error) {
                TeaException error = new TeaException(_error.getMessage(), _error);
                // 此处仅做打印展示,请谨慎对待异常处理,在工程项目中切勿直接忽略异常。
                // 错误 message
                System.out.println(error.getMessage());
                // 诊断地址
                System.out.println(error.getData().get("Recommend"));
                com.aliyun.teautil.Common.assertAsString(error.message);
                throw new RuntimeException(error);
            }
        }
    
        private static String callApi(CallRequest callRequest) {
            try {
                // 通过HttpClient发送请求
                String url = "https://" + callRequest.host + callRequest.canonicalUri;
                URIBuilder uriBuilder = new URIBuilder(url);
                // 添加请求参数
                for (Map.Entry<String, Object> entry : callRequest.queryParam.entrySet()) {
                    uriBuilder.addParameter(entry.getKey(), String.valueOf(entry.getValue()));
                }
                HttpUriRequest httpRequest;
    
                HttpPost httpPost = new HttpPost(uriBuilder.build());
                if (callRequest.body != null) {
                    httpPost.setEntity(new ByteArrayEntity(callRequest.body, ContentType.create(callRequest.headers.get("content-type"))));
                }
                httpRequest = httpPost;
    
                // 添加http请求头
                for (Map.Entry<String, String> entry : callRequest.headers.entrySet()) {
                    httpRequest.addHeader(entry.getKey(), String.valueOf(entry.getValue()));
                }
                // 发送请求
                try (CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = httpClient.execute(httpRequest)) {
                    String result = EntityUtils.toString(response.getEntity(), "UTF-8");
                    return result;
                } catch (IOException e) {
                    // 异常处理
                    System.out.println("Failed to send request");
                    e.printStackTrace();
                }
            } catch (URISyntaxException e) {
                // 异常处理
                System.out.println("Invalid URI syntax");
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 该方法用于根据传入的HTTP请求方法、规范化的URI、查询参数等,计算并生成授权信息。
         */
        private static String getAuthorization(CallRequest callRequest) {
            try {
                // 处理queryParam中参数值为List、Map类型的参数,将参数平铺
                TreeMap<String, Object> newQueryParam = new TreeMap<>();
                processObject(newQueryParam, "", callRequest.queryParam);
                callRequest.queryParam = newQueryParam;
                // 步骤 1:拼接规范请求串
                // 请求参数,当请求的查询字符串为空时,使用空字符串作为规范化查询字符串
                StringBuilder canonicalQueryString = new StringBuilder();
                callRequest.queryParam.entrySet().stream().map(entry -> percentCode(entry.getKey()) + "="
                        + percentCode(String.valueOf(entry.getValue()))).forEachOrdered(queryPart -> {
                    // 如果canonicalQueryString已经不是空的,则在查询参数前添加"&"
                    if (canonicalQueryString.length() > 0) {
                        canonicalQueryString.append("&");
                    }
                    canonicalQueryString.append(queryPart);
                });
    
                // 计算请求体的哈希值
                String requestPayload = ""; // 请求体,当请求正文为空时,比如GET请求,RequestPayload固定为空字符串
                String hashedRequestPayload = callRequest.body != null ? sha256Hex(callRequest.body) : sha256Hex(requestPayload.getBytes(StandardCharsets.UTF_8));
                callRequest.headers.put("x-acs-content-sha256", hashedRequestPayload);
                // 构造请求头,多个规范化消息头,按照消息头名称(小写)的字符代码顺序以升序排列后拼接在一起
                StringBuilder canonicalHeaders = new StringBuilder();
                // 已签名消息头列表,多个请求头名称(小写)按首字母升序排列并以英文分号(;)分隔
                StringBuilder signedHeadersSb = new StringBuilder();
                callRequest.headers.entrySet().stream().filter(entry -> entry.getKey().toLowerCase().startsWith("x-acs-") || "host".equalsIgnoreCase(entry.getKey()) || "content-type".equalsIgnoreCase(entry.getKey())).sorted(Map.Entry.comparingByKey()).forEach(entry -> {
                    String lowerKey = entry.getKey().toLowerCase();
                    String value = String.valueOf(entry.getValue()).trim();
                    canonicalHeaders.append(lowerKey).append(":").append(value).append("\n");
                    signedHeadersSb.append(lowerKey).append(";");
                });
                String signedHeaders = signedHeadersSb.substring(0, signedHeadersSb.length() - 1);
                String canonicalRequest = callRequest.httpMethod + "\n" + callRequest.canonicalUri + "\n" + canonicalQueryString + "\n" + canonicalHeaders + "\n" + signedHeaders + "\n" + hashedRequestPayload;
    
                // 步骤 2:拼接待签名字符串
                String hashedCanonicalRequest = sha256Hex(canonicalRequest.getBytes(StandardCharsets.UTF_8)); // 计算规范化请求的哈希值
                String stringToSign = "ACS3-HMAC-SHA256" + "\n" + hashedCanonicalRequest;
    
                // 步骤 3:计算签名
                String signature = DatatypeConverter.printHexBinary(hmac256(callRequest.accessKeySecret.getBytes(StandardCharsets.UTF_8), stringToSign)).toLowerCase();
    
                // 步骤 4:拼接 Authorization
                return "ACS3-HMAC-SHA256" + " " + "Credential=" + callRequest.accessKeyId + ",SignedHeaders=" + signedHeaders + ",Signature=" + signature;
            } catch (Exception e) {
                // 异常处理
                e.printStackTrace();
                throw new RuntimeException("Get authorization failed.", e);
            }
        }
    
        /**
         * 递归处理对象,将复杂对象(如Map和List)展开为平面的键值对
         *
         * @param map   原始的键值对集合,将被递归地更新
         * @param key   当前处理的键,随着递归的深入,键会带有嵌套路径信息
         * @param value 对应于键的值,可以是嵌套的Map、List或其他类型
         */
        private static void processObject(Map<String, Object> map, String key, Object value) {
            // 如果值为空,则无需进一步处理
            if (value == null) {
                return;
            }
            if (key == null) {
                key = "";
            }
            // 当值为List类型时,遍历List中的每个元素,并递归处理
            if (value instanceof List<?>) {
                List<?> list = (List<?>) value;
                for (int i = 0; i < list.size(); ++i) {
                    processObject(map, key + "." + (i + 1), list.get(i));
                }
            } else if (value instanceof Map<?, ?>) {
                // 当值为Map类型时,遍历Map中的每个键值对,并递归处理
                Map<?, ?> subMap = (Map<?, ?>) value;
                for (Map.Entry<?, ?> entry : subMap.entrySet()) {
                    processObject(map, key + "." + entry.getKey().toString(), entry.getValue());
                }
            } else {
                // 对于以"."开头的键,移除开头的"."以保持键的连续性
                if (key.startsWith(".")) {
                    key = key.substring(1);
                }
                // 对于byte[]类型的值,将其转换为UTF-8编码的字符串
                if (value instanceof byte[]) {
                    map.put(key, new String((byte[]) value, StandardCharsets.UTF_8));
                } else {
                    // 对于其他类型的值,直接转换为字符串
                    map.put(key, String.valueOf(value));
                }
            }
        }
    
        /**
         * 使用HmacSHA256算法生成消息认证码(MAC)。
         *
         * @param secretKey 密钥,用于生成MAC的密钥,必须保密。
         * @param str       需要进行MAC认证的消息。
         * @return 返回使用HmacSHA256算法计算出的消息认证码。
         * @throws Exception 如果初始化MAC或计算MAC过程中遇到错误,则抛出异常。
         */
        public static byte[] hmac256(byte[] secretKey, String str) throws Exception {
            // 实例化HmacSHA256消息认证码生成器
            Mac mac = Mac.getInstance("HmacSHA256");
            // 创建密钥规范,用于初始化MAC生成器
            SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey, mac.getAlgorithm());
            // 初始化MAC生成器
            mac.init(secretKeySpec);
            // 计算消息认证码并返回
            return mac.doFinal(str.getBytes(StandardCharsets.UTF_8));
        }
    
        /**
         * 使用SHA-256算法计算字符串的哈希值并以十六进制字符串形式返回。
         *
         * @param input 需要进行SHA-256哈希计算的字节数组。
         * @return 计算结果为小写十六进制字符串。
         * @throws Exception 如果在获取SHA-256消息摘要实例时发生错误。
         */
        public static String sha256Hex(byte[] input) throws Exception {
            // 获取SHA-256消息摘要实例
            MessageDigest md = MessageDigest.getInstance("SHA-256");
            // 计算字符串s的SHA-256哈希值
            byte[] d = md.digest(input);
            // 将哈希值转换为小写十六进制字符串并返回
            return DatatypeConverter.printHexBinary(d).toLowerCase();
        }
    
        /**
         * 对指定的字符串进行URL编码。
         * 使用UTF-8编码字符集对字符串进行编码,并对特定的字符进行替换,以符合URL编码规范。
         *
         * @param str 需要进行URL编码的字符串。
         * @return 编码后的字符串。其中,加号"+"被替换为"%20",星号"*"被替换为"%2A",波浪号"%7E"被替换为"~"。
         */
        public static String percentCode(String str) {
            if (str == null) {
                throw new IllegalArgumentException("输入字符串不可为null");
            }
            try {
                return URLEncoder.encode(str, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException("UTF-8编码不被支持", e);
            }
        }
    
    
        private static class CallRequest {
            // HTTP Method
            private final String httpMethod;
            // 请求路径,当资源路径为空时,使用正斜杠(/)作为CanonicalURI
            private final String canonicalUri;
            // endpoint
            private final String host;
            // API name
            private final String xAcsAction;
            // API version
            private final String xAcsVersion;
            // accessKeyId
            private final String accessKeyId;
            // accessKeySecret
            private final String accessKeySecret;
            // STS令牌,非STS鉴权方式时,该参数为空
            private final String securityToken;
            // headers
            TreeMap<String, String> headers = new TreeMap<>();
            // body参数对应的字节数组,请求参数在元数据中显示"in":"body"或"in": "formData",表示参数放在body中
            byte[] body;
            // query参数,请求参数在元数据中显示"in":"query",表示参数拼接在请求URL上
            TreeMap<String, Object> queryParam = new TreeMap<>();
    
            public CallRequest(String httpMethod, String canonicalUri, String host, String xAcsAction, String xAcsVersion, String accessKeyId, String accessKeySecret, String securityToken) {
                this.httpMethod = httpMethod;
                this.canonicalUri = canonicalUri;
                this.host = host;
                this.xAcsAction = xAcsAction;
                this.xAcsVersion = xAcsVersion;
                this.accessKeyId = accessKeyId;
                this.accessKeySecret = accessKeySecret;
                this.securityToken = securityToken;
                initHeader();
            }
    
            // init headers
            private void initHeader() {
                headers.put("host", host);
                headers.put("x-acs-action", xAcsAction);
                headers.put("x-acs-version", xAcsVersion);
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
                sdf.setTimeZone(new SimpleTimeZone(0, "GMT")); // 设置日期格式化时区为GMT
                headers.put("x-acs-date", sdf.format(new Date()));
                headers.put("x-acs-signature-nonce", UUID.randomUUID().toString());
                if (securityToken != null) {
                    headers.put("x-acs-security-token", securityToken);
                }
            }
        }
    }