Java 请求华为云认证接口API

调用接口有如下两种认证方式，您可以选择其中一种进行认证鉴权。
Token认证：通过Token认证通用请求。
AK/SK认证：通过AK（Access Key ID）/SK（Secret Access Key)加密调用请求。

1.先获取认证接口的认证鉴权（Token认证方式）

//获取请求链接中用户的token信息
    public String getToken() throws IOException {
        String tokenStr = "";
        //先判断redis中是否有
        String value = cacheManager.getValue(Constants.CacheModule.WULIU, "x-subject-token");
        if (value!=null){
            return value;
        }

        String iam = "https://iam."+endpoint+"/v3/auth/tokens";
        String param = "{\"auth\":{\"identity\":{\"methods\":[\"password\"],\"password\":{\"user\":{\"name\":\"" + username + "\",\"password\":\"" + password + "\",\"domain\":{\"name\":\"" + domainName + "\"}}}},\"scope\":{\"project\":{\"name\":\"cn-north-4\"}}}}";
        OutputStreamWriter out;
        BufferedReader in = null;
        String response = "";

        try {
            //需要请求的url
            URL url = new URL(iam);
            //打开和URL之间的连接
            URLConnection connection = url.openConnection();
            //设置通用的请求属性，请求头部分
            //设置Content-type 为 application/x-www-form-urlencoded
            connection.addRequestProperty("Content-type", "application/json");
            // 发送POST请求必须设置如下两行
            connection.setDoInput(true);
            connection.setDoOutput(true);
            // 建立实际的连接
            connection.connect();

            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(connection.getOutputStream(), "utf-8");
            // 发送请求参数
            out.write(param);
            // flush输出流的缓冲
            out.flush();

            //获取相应头中的token信息
            tokenStr = connection.getHeaderField("x-subject-token");

            if (tokenStr.isEmpty()){
                return null;
            }
            //将token放在缓存中 避免多次请求
            cacheManager.setValue(com.ias.assembly.redis.common.Constants.CacheModule.WULIU, "x-subject-token",token,12*60*60);

            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                //打印出相应头中的信息
                System.out.println(key + "--->" + map.get(key));
            }
        }catch (Exception e) {
            System.out.println("发送POST请求出现异常！" + e);
            e.printStackTrace();
        }finally{
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return tokenStr;
    }
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2.请求认证接口

    //司机道路运输许可证识别
    public JSONObject transportationLicense(String picUrl,String token) throws IOException{
        String ocr = "https://ocr."+endpoint+"/v2/"+projectId+"ocr/transportation-license";
        System.out.println("华为云OCR请求地址:"+ocr);
        String response = "";
        BufferedReader in = null;
        String param = "{\"url\":\"" + picUrl + "\"}";
        try {
            URL url = new URL(ocr);
            URLConnection connection = url.openConnection();
            //容易载跟头，表明请求体的部分为json形式
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("X-Auth-Token", token);
            // 发送POST请求必须设置如下两行
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.connect();
            // 获取URLConnection对象对应的输出流
            OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), "utf-8");
            // 发送请求参数
            out.write(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                response += line;
            }
        } catch (Exception e) {
            System.out.println("POST发送请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        log.info("图片解析结果："+response);
        //返回相应体中的结果，打印出来
        JSONObject jsonObject = JSONObject.parseObject(response)
		log.info("图片解析结果："+jsonObject)
        return jsonObject;
    }
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