阿里云视频 播放获取签名方法

public class AccKeyUtilController extends BaseController {

    public static String REGION_ID = "cn-beijing";
    public static String ACCESSKEY_ID = "《你的AccessKey——id》";
    public static String SECRET = "《账号secret》";
    public static String ROLE_ARN = "《账号的 arn》";
    private final static String ISO8601_DATE_FORMAT = "yyyy-MM-dd‘T‘HH:mm:ss‘Z‘";
    private final static String KEY = "《鉴权key》";

    @RequestMapping(value="/getSign", method= RequestMethod.POST)
    public Map<String, String> getSignature(HttpServletRequest request, HttpServletResponse resp) {
        /*resp.addHeader("Content-type", "application/json;charset=UTF-8");
        resp.addHeader("Access-Control-Allow-Origin", "*");*/
        /*resp.setHeader("Content-type", "application/json;charset=UTF-8");
        resp.setHeader("Access-Control-Allow-Origin", "*");*/
        String mediaId = null;
        try {
            JSONObject params = this.getJSONObject(request.getInputStream());
            mediaId = (String)params.get("mediaId");
        } catch (IOException e) {
            e.printStackTrace();
        }

        IClientProfile profile = DefaultProfile.getProfile(REGION_ID, ACCESSKEY_ID, SECRET);
        DefaultAcsClient client = new DefaultAcsClient(profile);
        Map<String, String> resultMap = new HashMap<>();
        AssumeRoleResponse response = null;
        AssumeRoleResponse.Credentials credentials;
        try {
            response = assumeRole(client, ROLE_ARN);
            credentials = response.getCredentials();
            System.out.println(credentials.getAccessKeyId() + "\n---akid" + "\n" +
                    credentials.getAccessKeySecret() + "\n---aks" + "\n" +
                    credentials.getSecurityToken() + "\n---st" + "\n" +
                    credentials.getExpiration());

            String expiretime = nowTime();
            try {
                //时间 进行转码
                String encode = AcsURLEncoder.encode(expiretime);
                System.out.println(expiretime + "---时间");
                //拼装字符串
                String data = "ExpireTime=" + encode + "&MediaId=" + mediaId;
                System.out.println(data);

                //开始生成 签名
                SecretKeySpec signKey = new SecretKeySpec(KEY.getBytes(), "HmacSHA1");
                System.out.println(signKey);
                Mac mac = null;
                try {
                    mac = Mac.getInstance("HmacSHA1");
                    mac.init(signKey);
                    //对生成的签名进行 BASE64转码
                    byte[] bytes = mac.doFinal(data.getBytes());
                    String encode2 = new BASE64Encoder().encode(bytes);
                    System.out.println(encode2);
                    //把需要的数据 放入MAP中 返回到前台   s
                    resultMap.put("accessKeyId",credentials.getAccessKeyId());
                    resultMap.put("securityToken",credentials.getSecurityToken());
                    resultMap.put("accessKeySecret",credentials.getAccessKeySecret());
                    resultMap.put("ExpireTime",expiretime);
                    resultMap.put("Signature",encode2);
                    resultMap.put("domainRegion",REGION_ID);
                    return resultMap;
                } catch (NoSuchAlgorithmException e) {
                    e.printStackTrace();
                } catch (InvalidKeyException e) {
                    e.printStackTrace();
                }
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }

        } catch (ClientException e) {
            e.printStackTrace();
        }
        return null;
    }

    private static AssumeRoleResponse assumeRole(DefaultAcsClient client, String roleArn) throws ClientException {
        final AssumeRoleRequest request = new AssumeRoleRequest();
        request.setVersion("2015-04-01");
        request.setMethod(MethodType.POST);
        request.setProtocol(ProtocolType.HTTPS);
        request.setDurationSeconds(1200L);
        request.setRoleArn(roleArn);
        request.setRoleSessionName("test-token");
        return client.getAcsResponse(request);
    }

    public static String nowTime() {
        TimeZone.setDefault(TimeZone.getTimeZone("GMT+10"));
        SimpleDateFormat df = new SimpleDateFormat(ISO8601_DATE_FORMAT);
        Date date = new Date();
        return df.format(date);
    }
}


//前台播放器 

var player = new Aliplayer({
    id: ‘J_prismPlayer‘,
    width: ‘80%‘,
    autoplay: false,

    //播放方式三：仅MTS用户使用
    vid: ‘<视频ID>‘,
    accId: ‘<验证签名后--返回的accID>‘,
    format:‘m3u8‘,
    accSecret: ‘<验证签名后--返回的>‘,

stsToken: ‘<签证签名后--返回的>‘,

    domainRegion: ‘cn-beijing‘,
    useFlashPrism:true,
    authInfo: ‘{"ExpireTime": "<过期时间-GMT格式>", "MediaId": "<视频Id>","Signature": "<验证签名--生成的签名>"}‘
 

}, function (player) {
    console.log(‘播放器创建好了。‘)
});