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請(qǐng)求簽名

更新時(shí)間:

為了保證請(qǐng)求的完整性和安全性,防止數(shù)據(jù)被篡改或偽造,對(duì)于每一次HTTP或者HTTPS協(xié)議請(qǐng)求,阿里云視覺(jué)智能開(kāi)放平臺(tái)通過(guò)AccessKey ID和AccessKey Secret對(duì)稱(chēng)加密方式,根據(jù)訪(fǎng)問(wèn)中的簽名信息驗(yàn)證請(qǐng)求訪(fǎng)問(wèn)者的身份。其中,AccessKey ID是訪(fǎng)問(wèn)者身份,AccessKey Secret是加密簽名字符串和服務(wù)器端驗(yàn)證簽名字符串的密鑰,必須嚴(yán)格保密,謹(jǐn)防泄露。

說(shuō)明

阿里云視覺(jué)智能開(kāi)放平臺(tái)各類(lèi)目視覺(jué)AI能力API接入、接口使用或問(wèn)題咨詢(xún)等,請(qǐng)通過(guò)釘釘群(23109592)加入阿里云視覺(jué)智能開(kāi)放平臺(tái)咨詢(xún)?nèi)郝?lián)系我們。

簽名流程

  1. 指定請(qǐng)求參數(shù)。

    在代碼中指定請(qǐng)求參數(shù),參數(shù)中需要包含公共請(qǐng)求頭和接口必備的參數(shù)信息。

    說(shuō)明

    請(qǐng)求參數(shù)中不允許出現(xiàn)以Signature為key的參數(shù)。

    示例代碼如下:

    // 創(chuàng)建AccessKey ID和AccessKey Secret,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/175144.html
    // 如果您使用的是RAM用戶(hù)的AccessKey,還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/145025.html
    // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
    String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
    String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
    java.text.SimpleDateFormat df = new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
    df.setTimeZone(new java.util.SimpleTimeZone(0, "GMT"));// 這里一定要設(shè)置GMT時(shí)區(qū)
    java.util.Map<String, String> params = new java.util.HashMap<String, String>();

    指定參數(shù):

    params.put("SignatureMethod", "HMAC-SHA1");
    params.put("SignatureNonce", java.util.UUID.randomUUID().toString());
    params.put("AccessKeyId", accessKeyId);
    params.put("SignatureVersion", "1.0");
    params.put("Timestamp", df.format(new java.util.Date()));
    params.put("Format", "JSON");
    params.put("RegionId", "cn-shanghai");
    // API版本,與類(lèi)目相關(guān),具體類(lèi)目的API版本請(qǐng)參考:http://bestwisewords.com/document_detail/464194.html
    params.put("Version", "2019-09-30");
    // API Action,能力名稱(chēng),請(qǐng)參考具體算法文檔詳情頁(yè)中的Action參數(shù),這里以圖像超分為例:http://bestwisewords.com/document_detail/151947.html
    params.put("Action", "MakeSuperResolutionImage");
    // 下面是業(yè)務(wù)參數(shù),業(yè)務(wù)參數(shù)指的是具體算法文檔請(qǐng)求參數(shù)中除了Action參數(shù)之外的參數(shù)
    // 注意,使用簽名機(jī)制調(diào)用,文件參數(shù)目前僅支持上海OSS鏈接,可參考http://bestwisewords.com/document_detail/175142.html文檔將文件放入上海OSS中。如果是其他情況(如本地文件或者其他鏈接),請(qǐng)先顯式地轉(zhuǎn)換成上海OSS鏈接,可參考http://bestwisewords.com/document_detail/155645.html文檔中的方式二,但該方案不支持web前端環(huán)境直接調(diào)用。
    params.put("Url", "http://viapi-demo.oss-cn-shanghai.aliyuncs.com/viapi-demo/images/MakeSuperResolution/sup-dog.png");
    // 對(duì)于數(shù)組類(lèi)字段,需要將參數(shù)中的N改為從1開(kāi)始的連續(xù)的具體數(shù)字,比如參數(shù)Tasks.N.ImageURL,需要輸入兩張圖片,則為
    // params.put("Tasks.1.ImageURL", "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/facebody/DetectLivingFace/DetectLivingFace11.jpg");
    // params.put("Tasks.2.ImageURL", "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/facebody/DetectLivingFace/DetectLivingFace13.jpg");

    去除簽名關(guān)鍵字Key:

    if (paras.containsKey("Signature")) {
    paras.remove("Signature");
    }
  2. 根據(jù)參數(shù)Key排序(順序)。

    參考代碼如下:

    java.util.TreeMap<String, String> sortParas = new java.util.TreeMap<String, String>();
    sortParas.putAll(paras);
  3. 構(gòu)造待簽名的請(qǐng)求串。

    首先介紹下面會(huì)用到的特殊URL編碼,這個(gè)是POP特殊的一種規(guī)則,即在一般的URLEncode后再增加如下三種字符替換。

    • 加號(hào)+替換為%20

    • 星號(hào)*替換為%2A

    • 波浪號(hào)~替換為%7E

    參考代碼如下:

    public static String specialUrlEncode(String value) throws Exception {
        return java.net.URLEncoder.encode(value, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("~", "%7E");
    }    

    構(gòu)造待簽名的請(qǐng)求串,把排序后的參數(shù)順序拼接成如下格式:

    "&" + specialUrlEncode(參數(shù)Key) + "=" + specialUrlEncode(參數(shù)值)

    參考代碼如下:

    java.util.Iterator<String> it = sortParas.keySet().iterator();
    StringBuilder sortQueryStringTmp = new StringBuilder();
    while (it.hasNext()) {
        String key = it.next();
        sortQueryStringTmp.append("&").append(specialUrlEncode(key)).append("=").append(specialUrlEncode(paras.get(key)));
    }
    String sortedQueryString = sortQueryStringTmp.substring(1);// 去除第一個(gè)多余的&符號(hào)

    打印上面的sortQueryString。結(jié)果如下:

    AccessKeyId=yourAccessId&Action=MakeSuperResolutionImage&Format=JSON&RegionId=cn-shanghai&SignatureMethod=HMAC-SHA1&SignatureNonce=4a816d44-6186-4f7e-a45f-ba1b3ed73aed&SignatureVersion=1.0&Timestamp=2019-12-07T13%3A28%3A52Z&Url=http%3A%2F%2Fviapi-demo.oss-cn-shanghai.aliyuncs.com%2Fviapi-demo%2Fimages%2FMakeSuperResolution%2Fsup-dog.png&Version=2019-09-30

    對(duì)應(yīng)的未進(jìn)行URL編碼的值(方便進(jìn)行對(duì)比):

    AccessKeyId=yourAccessId&Action=MakeSuperResolutionImage&Format=JSON&RegionId=cn-shanghai&SignatureMethod=HMAC-SHA1&SignatureNonce=4a816d44-6186-4f7e-a45f-ba1b3ed73aed&SignatureVersion=1.0&Timestamp=2019-12-07T13:28:52Z&Url=http://viapi-demo.oss-cn-shanghai.aliyuncs.com/viapi-demo/images/MakeSuperResolution/sup-dog.png&Version=2019-09-30

    按POP的簽名規(guī)則拼接成最終的待簽名串。規(guī)則如下:

    HTTPMethod + “&” + specialUrlEncode(“/”) + ”&” + specialUrlEncode(sortedQueryString)

    參考代碼如下:

    StringBuilder stringToSign = new StringBuilder();
    stringToSign.append("POST").append("&");
    stringToSign.append(specialUrlEncode("/")).append("&");
    stringToSign.append(specialUrlEncode(sortedQueryString));

    這就完成了待簽名的請(qǐng)求字符串。結(jié)果如下:

    POST&%2F&AccessKeyId%3DyourAccessId&Action%3DMakeSuperResolutionImage&Format%3DJSON&RegionId%3Dcn-shanghai&SignatureMethod%3DHMAC-SHA1&SignatureNonce%3D4a816d44-6186-4f7e-a45f-ba1b3ed73aed&SignatureVersion%3D1.0&Timestamp%3D2019-12-07T13%253A28%253A52Z&Url%3Dhttp%253A%252F%252Fviapi-demo.oss-cn-shanghai.aliyuncs.com%252Fviapi-demo%252Fimages%252FMakeSuperResolution%252Fsup-dog.png&Version%3D2019-09-30
  4. 進(jìn)行簽名。

    簽名采用HmacSHA1算法+Base64,編碼采用UTF-8。使用AccessKeySecret進(jìn)行加密,參考代碼如下:

    String sign = sign(accessSecret + "&", stringToSign.toString());
    public static String sign(String accessSecret, String stringToSign) throws Exception {
        javax.crypto.Mac mac = javax.crypto.Mac.getInstance("HmacSHA1");
        mac.init(new javax.crypto.spec.SecretKeySpec(accessSecret.getBytes("UTF-8"), "HmacSHA1"));
        byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
        return new sun.misc.BASE64Encoder().encode(signData);
    }     

    參數(shù)

    說(shuō)明

    accessSecret

    您的AccessKeyID對(duì)應(yīng)的密鑰AccessKeySecret。

    說(shuō)明

    POP要求后面多加一個(gè)and(&)字符,即accessSecret + “&”。

    stringToSign

    第三步生成的待簽名請(qǐng)求串。

    簽名后的結(jié)果如下:

    poMnQhB2W5xndjcsW5VZjSdkvnU=
  5. 增加簽名結(jié)果到請(qǐng)求參數(shù)中,發(fā)送請(qǐng)求。

    String Signature = specialUrlEncode(sign);// poMnQhB2W5xndjcsW5VZjSdkvnU%3D
    說(shuō)明

    簽名也要做特殊URL編碼。

    最終完整的POST請(qǐng)求HTTP為:

    http://imageenhan.cn-shanghai.aliyuncs.com/?Signature=poMnQhB2W5xndjcsW5VZjSdkvnU%3D&AccessKeyId=yourAccessId&Action=MakeSuperResolutionImage&Format=JSON&RegionId=cn-shanghai&SignatureMethod=HMAC-SHA1&SignatureNonce=4a816d44-6186-4f7e-a45f-ba1b3ed73aed&SignatureVersion=1.0&Timestamp=2019-12-07T13%3A28%3A52Z&Url=http%3A%2F%2Fviapi-demo.oss-cn-shanghai.aliyuncs.com%2Fviapi-demo%2Fimages%2FMakeSuperResolution%2Fsup-dog.png&Version=2019-09-30
    說(shuō)明

    imageenhan.cn-shanghai.aliyuncs.com是圖像生產(chǎn)的訪(fǎng)問(wèn)域名,不同類(lèi)目的訪(fǎng)問(wèn)域名是不同的,具體類(lèi)目的API訪(fǎng)問(wèn)域名,請(qǐng)參見(jiàn)訪(fǎng)問(wèn)域名

JAVA示例

簡(jiǎn)單參數(shù)示例

以圖像超分(MakeSuperResolutionImage)為例,完整的Java簽名代碼示例如下。

import java.net.URI;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class SignDemo {
    // HTTPMethod推薦使用POST
    static final String API_HTTP_METHOD = "POST";
    // API訪(fǎng)問(wèn)域名,與類(lèi)目相關(guān),具體類(lèi)目的API訪(fǎng)問(wèn)域名請(qǐng)參考:http://bestwisewords.com/document_detail/143103.html
    static final String API_ENDPOINT = "imageenhan.cn-shanghai.aliyuncs.com";
    // API版本,與類(lèi)目相關(guān),具體類(lèi)目的API版本請(qǐng)參考:http://bestwisewords.com/document_detail/464194.html
    static final String API_VERSION = "2019-09-30";
    static final java.text.SimpleDateFormat DF = new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
    public static void main(String[] args) throws Exception {
        // 創(chuàng)建AccessKey ID和AccessKey Secret,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/175144.html
        // 如果您使用的是RAM用戶(hù)的AccessKey,還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/145025.html
        // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessSecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
        DF.setTimeZone(new java.util.SimpleTimeZone(0, "GMT"));// 這里一定要設(shè)置GMT時(shí)區(qū)
        // 業(yè)務(wù)參數(shù)名字是大駝峰
        Map<String, String> params = new HashMap<>();
        // 注意,使用簽名機(jī)制調(diào)用,文件參數(shù)目前僅支持上海OSS鏈接,可參考http://bestwisewords.com/document_detail/175142.html文檔將文件放入上海OSS中。如果是其他情況(如本地文件或者其他鏈接),請(qǐng)先顯式地轉(zhuǎn)換成上海OSS鏈接,可參考http://bestwisewords.com/document_detail/155645.html文檔中的方式二,但該方案不支持web前端環(huán)境直接調(diào)用。
        params.put("Url", "http://viapi-demo.oss-cn-shanghai.aliyuncs.com/viapi-demo/images/MakeSuperResolution/sup-dog.png");
        // API Action,能力名稱(chēng),請(qǐng)參考具體算法文檔詳情頁(yè)中的Action參數(shù),這里以圖像超分為例:http://bestwisewords.com/document_detail/151947.html
        String action = "MakeSuperResolutionImage";
        execute(action, accessKeyId, accessSecret, params);
    }
    public static void execute(String action, String accessKeyId, String accessSecret, Map<String, String> bizParams) throws Exception {
        java.util.Map<String, String> params = new java.util.HashMap<String, String>();
        // 1. 系統(tǒng)參數(shù)
        params.put("SignatureMethod", "HMAC-SHA1");
        params.put("SignatureNonce", java.util.UUID.randomUUID().toString());//防止重放攻擊
        params.put("AccessKeyId", accessKeyId);
        params.put("SignatureVersion", "1.0");
        params.put("Timestamp", DF.format(new java.util.Date()));
        params.put("Format", "JSON");
        // 2. 業(yè)務(wù)API參數(shù)
        params.put("RegionId", "cn-shanghai");
        params.put("Version", API_VERSION);
        params.put("Action", action);
        if (bizParams != null && !bizParams.isEmpty()) {
            params.putAll(bizParams);
        }
        // 3. 去除簽名關(guān)鍵字Key
        if (params.containsKey("Signature")) {
            params.remove("Signature");
        }
        // 4. 參數(shù)KEY排序
        java.util.TreeMap<String, String> sortParams = new java.util.TreeMap<String, String>();
        sortParams.putAll(params);
        // 5. 構(gòu)造待簽名的字符串
        java.util.Iterator<String> it = sortParams.keySet().iterator();
        StringBuilder sortQueryStringTmp = new StringBuilder();
        while (it.hasNext()) {
            String key = it.next();
            sortQueryStringTmp.append("&").append(specialUrlEncode(key)).append("=").append(specialUrlEncode(params.get(key)));
        }
        String sortedQueryString = sortQueryStringTmp.substring(1);// 去除第一個(gè)多余的&符號(hào)
        StringBuilder stringToSign = new StringBuilder();
        stringToSign.append(API_HTTP_METHOD).append("&");
        stringToSign.append(specialUrlEncode("/")).append("&");
        stringToSign.append(specialUrlEncode(sortedQueryString));
        String sign = sign(accessSecret + "&", stringToSign.toString());
        // 6. 簽名最后也要做特殊URL編碼
        String signature = specialUrlEncode(sign);
        System.out.println(params.get("SignatureNonce"));
        System.out.println("\r\n=========\r\n");
        System.out.println(params.get("Timestamp"));
        System.out.println("\r\n=========\r\n");
        System.out.println(sortedQueryString);
        System.out.println("\r\n=========\r\n");
        System.out.println(stringToSign.toString());
        System.out.println("\r\n=========\r\n");
        System.out.println(sign);
        System.out.println("\r\n=========\r\n");
        System.out.println(signature);
        System.out.println("\r\n=========\r\n");
        // 最終生成出合法請(qǐng)求的URL
        System.out.println("http://" + API_ENDPOINT + "/?Signature=" + signature + sortQueryStringTmp);

        // 添加直接做post請(qǐng)求的方法
        try {
            // 使用生成的 URL 創(chuàng)建POST請(qǐng)求
            URIBuilder builder = new URIBuilder("http://" + API_ENDPOINT + "/?Signature=" + signature + sortQueryStringTmp);
            URI uri = builder.build();
            HttpPost request = new HttpPost(uri);
            HttpClient httpclient = HttpClients.createDefault();
            HttpResponse response = httpclient.execute(request);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                System.out.println(EntityUtils.toString(entity));
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
    public static String specialUrlEncode(String value) throws Exception {
        return java.net.URLEncoder.encode(value, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
    }
    public static String sign(String accessSecret, String stringToSign) throws Exception {
        javax.crypto.Mac mac = javax.crypto.Mac.getInstance("HmacSHA1");
        mac.init(new javax.crypto.spec.SecretKeySpec(accessSecret.getBytes("UTF-8"), "HmacSHA1"));
        byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
        return new sun.misc.BASE64Encoder().encode(signData);
    }
}              

數(shù)組參數(shù)示例

以人臉活體檢測(cè)(DetectLivingFace)為例,完整的Java簽名代碼示例如下。

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.net.URI;
import java.util.HashMap;
import java.util.Map;

public class SignDemo {

    // HTTPMethod推薦使用POST
    static final String API_HTTP_METHOD = "POST";
    // API訪(fǎng)問(wèn)域名,與類(lèi)目相關(guān),具體類(lèi)目的API訪(fǎng)問(wèn)域名請(qǐng)參考:http://bestwisewords.com/document_detail/143103.html
    static final String API_ENDPOINT = "facebody.cn-shanghai.aliyuncs.com";
    // API版本,與類(lèi)目相關(guān),具體類(lèi)目的API版本請(qǐng)參考:http://bestwisewords.com/document_detail/464194.html
    static final String API_VERSION = "2019-12-30";
    static final java.text.SimpleDateFormat DF = new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
    public static void main(String[] args) throws Exception {
        // 創(chuàng)建AccessKey ID和AccessKey Secret,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/175144.html
        // 如果您使用的是RAM用戶(hù)的AccessKey,還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/145025.html
        // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessSecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
        DF.setTimeZone(new java.util.SimpleTimeZone(0, "GMT"));// 這里一定要設(shè)置GMT時(shí)區(qū)
        // 業(yè)務(wù)參數(shù)名字是大駝峰
        Map<String, String> params = new HashMap<>();
        // 注意,使用簽名機(jī)制調(diào)用,文件參數(shù)目前僅支持上海OSS鏈接,可參考http://bestwisewords.com/document_detail/175142.html文檔將文件放入上海OSS中。如果是其他情況(如本地文件或者其他鏈接),請(qǐng)先顯式地轉(zhuǎn)換成上海OSS鏈接,可參考http://bestwisewords.com/document_detail/155645.html文檔中的方式二,但該方案不支持web前端環(huán)境直接調(diào)用。
        // 對(duì)于數(shù)組類(lèi)字段,需要將參數(shù)中的N改為從1開(kāi)始的連續(xù)的具體數(shù)字,比如參數(shù)Tasks.N.ImageURL,需要輸入兩張圖片,則為
        params.put("Tasks.1.ImageURL", "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/facebody/DetectLivingFace/DetectLivingFace11.jpg");
        params.put("Tasks.2.ImageURL", "http://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/facebody/DetectLivingFace/DetectLivingFace13.jpg");
        // API Action,能力名稱(chēng),請(qǐng)參考具體算法文檔詳情頁(yè)中的Action參數(shù),這里以人臉活體檢測(cè)為例:http://bestwisewords.com/document_detail/151947.html
        String action = "DetectLivingFace";
        execute(action, accessKeyId, accessSecret, params);
    }
    public static void execute(String action, String accessKeyId, String accessSecret, Map<String, String> bizParams) throws Exception {
        java.util.Map<String, String> params = new java.util.HashMap<String, String>();
        // 1. 系統(tǒng)參數(shù)
        params.put("SignatureMethod", "HMAC-SHA1");
        params.put("SignatureNonce", java.util.UUID.randomUUID().toString());//防止重放攻擊
        params.put("AccessKeyId", accessKeyId);
        params.put("SignatureVersion", "1.0");
        params.put("Timestamp", DF.format(new java.util.Date()));
        params.put("Format", "JSON");
        // 2. 業(yè)務(wù)API參數(shù)
        params.put("RegionId", "cn-shanghai");
        params.put("Version", API_VERSION);
        params.put("Action", action);
        if (bizParams != null && !bizParams.isEmpty()) {
            params.putAll(bizParams);
        }
        // 3. 去除簽名關(guān)鍵字Key
        if (params.containsKey("Signature")) {
            params.remove("Signature");
        }
        // 4. 參數(shù)KEY排序
        java.util.TreeMap<String, String> sortParams = new java.util.TreeMap<String, String>();
        sortParams.putAll(params);
        // 5. 構(gòu)造待簽名的字符串
        java.util.Iterator<String> it = sortParams.keySet().iterator();
        StringBuilder sortQueryStringTmp = new StringBuilder();
        while (it.hasNext()) {
            String key = it.next();
            sortQueryStringTmp.append("&").append(specialUrlEncode(key)).append("=").append(specialUrlEncode(params.get(key)));
        }
        String sortedQueryString = sortQueryStringTmp.substring(1);// 去除第一個(gè)多余的&符號(hào)
        StringBuilder stringToSign = new StringBuilder();
        stringToSign.append(API_HTTP_METHOD).append("&");
        stringToSign.append(specialUrlEncode("/")).append("&");
        stringToSign.append(specialUrlEncode(sortedQueryString));
        String sign = sign(accessSecret + "&", stringToSign.toString());
        // 6. 簽名最后也要做特殊URL編碼
        String signature = specialUrlEncode(sign);
        System.out.println(params.get("SignatureNonce"));
        System.out.println("\r\n=========\r\n");
        System.out.println(params.get("Timestamp"));
        System.out.println("\r\n=========\r\n");
        System.out.println(sortedQueryString);
        System.out.println("\r\n=========\r\n");
        System.out.println(stringToSign.toString());
        System.out.println("\r\n=========\r\n");
        System.out.println(sign);
        System.out.println("\r\n=========\r\n");
        System.out.println(signature);
        System.out.println("\r\n=========\r\n");
        // 最終生成出合法請(qǐng)求的URL
        System.out.println("http://" + API_ENDPOINT + "/?Signature=" + signature + sortQueryStringTmp);

        // 添加直接做post請(qǐng)求的方法
        try {
            // 使用生成的 URL 創(chuàng)建POST請(qǐng)求
            URIBuilder builder = new URIBuilder("http://" + API_ENDPOINT + "/?Signature=" + signature + sortQueryStringTmp);
            URI uri = builder.build();
            HttpPost request = new HttpPost(uri);
            HttpClient httpclient = HttpClients.createDefault();
            HttpResponse response = httpclient.execute(request);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                System.out.println(EntityUtils.toString(entity));
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
    public static String specialUrlEncode(String value) throws Exception {
        return java.net.URLEncoder.encode(value, "UTF-8").replace("+", "%20").replace("*", "%2A").replace("%7E", "~");
    }
    public static String sign(String accessSecret, String stringToSign) throws Exception {
        javax.crypto.Mac mac = javax.crypto.Mac.getInstance("HmacSHA1");
        mac.init(new javax.crypto.spec.SecretKeySpec(accessSecret.getBytes("UTF-8"), "HmacSHA1"));
        byte[] signData = mac.doFinal(stringToSign.getBytes("UTF-8"));
        return new sun.misc.BASE64Encoder().encode(signData);
    }

}                

PHP示例

簡(jiǎn)單參數(shù)示例

以圖像超分(MakeSuperResolutionImage)為例,完整的PHP簽名代碼示例如下。

<?php


date_default_timezone_set("GMT");// 這里一定要設(shè)置GMT時(shí)區(qū)
class SignDemo
{
    // HTTPMethod推薦使用POST
    const API_HTTP_METHOD = "POST";
    // API訪(fǎng)問(wèn)域名,與類(lèi)目相關(guān),具體類(lèi)目的API訪(fǎng)問(wèn)域名請(qǐng)參考:http://bestwisewords.com/document_detail/143103.html
    const API_ENDPOINT = "imageenhan.cn-shanghai.aliyuncs.com";
    // API版本,與類(lèi)目相關(guān),具體類(lèi)目的API版本請(qǐng)參考:http://bestwisewords.com/document_detail/464194.html
    const API_VERSION = "2019-09-30";
    const DF = "Y-m-d\TH:i:s\Z";

    private $accessKeyId;
    private $accessSecret;

    public function __construct($accessKeyId, $accessSecret) {
        $this->accessKeyId = $accessKeyId;
        $this->accessSecret = $accessSecret;
    }

    public function execute($action, $bizParams) {
        $params = array(
            // 1. 系統(tǒng)參數(shù)
            "SignatureMethod" => "HMAC-SHA1",
            "SignatureNonce" => uniqid(),
            "AccessKeyId" => $this->accessKeyId,
            "SignatureVersion" => "1.0",
            "Timestamp" => gmdate(self::DF),
            "Format" => "JSON",
            // 2. 業(yè)務(wù)API參數(shù)
            "RegionId" => "cn-shanghai",
            "Version" => self::API_VERSION,
            "Action" => $action
        );

        if (!empty($bizParams)) {
            $params = array_merge($params, $bizParams);
        }

        unset($params["Signature"]);

        ksort($params);
        // 3. 構(gòu)造待簽名的字符串
        $sortedQueryStringTmp = "";
        foreach ($params as $key => $value) {
            $sortedQueryStringTmp .= "&" . $this->specialUrlEncode($key) . "=" . $this->specialUrlEncode($value);
        }
        $sortedQueryString = substr($sortedQueryStringTmp, 1);// 去除第一個(gè)多余的&符號(hào)
        // 4. 簽名最后也要做特殊URL編碼
        $stringToSign = self::API_HTTP_METHOD . "&" . $this->specialUrlEncode("/") . "&" . $this->specialUrlEncode($sortedQueryString);
        $signature = $this->specialUrlEncode($this->sign($this->accessSecret . "&", $stringToSign));
        
        // 5、最終生成出合法請(qǐng)求的URL
        $requestUrl = "http://" . self::API_ENDPOINT . "/?Signature=" . $signature . $sortedQueryStringTmp;
        echo $requestUrl . "\n";

        try {
            $context = stream_context_create(array(
                'http' => array(
                    'method' => 'POST',
                    'ignore_errors' => true,
                )
            ));
            $response = file_get_contents($requestUrl, false, $context);
            echo $response;
        } catch (Exception $e) {
            echo $e->getMessage();
        }
    }

    private function specialUrlEncode($value) {
        return str_replace(array("+", "*", "%7E"), array("%20", "%2A", "~"), rawurlencode($value));
    }

    private function sign($accessSecret, $stringToSign) {
        return base64_encode(hash_hmac("sha1", $stringToSign, $accessSecret, true));
    }
}

// 業(yè)務(wù)參數(shù)名字是大駝峰
// 注意,使用簽名機(jī)制調(diào)用,文件參數(shù)目前僅支持上海OSS鏈接,可參考http://bestwisewords.com/document_detail/175142.html文檔將文件放入上海OSS中。如果是其他情況(如本地文件或者其他鏈接),請(qǐng)先顯式地轉(zhuǎn)換成上海OSS鏈接,可參考http://bestwisewords.com/document_detail/155645.html文檔中的方式二,但該方案不支持web前端環(huán)境直接調(diào)用。
$bizParams = array("Url" => "http://viapi-demo.oss-cn-shanghai.aliyuncs.com/viapi-demo/images/MakeSuperResolution/sup-dog.png");
// API Action,能力名稱(chēng),請(qǐng)參考具體算法文檔詳情頁(yè)中的Action參數(shù),這里以圖像超分為例:http://bestwisewords.com/document_detail/151947.html
$action = "MakeSuperResolutionImage";

// 創(chuàng)建AccessKey ID和AccessKey Secret,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/175144.html
// 如果您使用的是RAM用戶(hù)的AccessKey,還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess,請(qǐng)參見(jiàn):http://bestwisewords.com/document_detail/145025.html
// 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
$signDemo = new SignDemo(getenv('ALIBABA_CLOUD_ACCESS_KEY_ID'), getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET'));
$signDemo->execute($action, $bizParams);

?>