輸入姓名、身份證號和人臉照片(base64格式字串)，對姓名和身份證號實名認證，比對公安人口庫中照片和人臉照片得到相似度得分，用於風控，人證合一校驗

public static void main(String[] args) {
	    String host = "https://facecheck.market.alicloudapi.com";
	    String path = "/facecheckjson";
	    String method = "POST";
	    String appcode = "你自己的AppCode";
	    Map<String, String> headers = new HashMap<String, String>();
	    //最後在header中的格式(中間是英文空格)為Authorization:APPCODE 83359fd73fe94948385f570e3c139105
	    headers.put("Authorization", "APPCODE " + appcode);
	    //根據API的要求，定義相對應的Content-Type
	    headers.put("Content-Type", "application/json; charset=UTF-8");
	    Map<String, String> querys = new HashMap<String, String>();
	    String bodys = "{\"idCardNum\":\"身份證號\",\"realName\":\"姓名\",\"image\":\"人臉照片(純base64字元圖片小於100K)\"}";


	    try {
	    	/**
	    	* 重要提示如下:
	    	* HttpUtils請從
	    	* https://github.com/aliyun/api-gateway-demo-sign-java/blob/master/src/main/java/com/aliyun/api/gateway/demo/util/HttpUtils.java
	    	* 下載
	    	*
	    	* 相應的依賴請參照
	    	* https://github.com/aliyun/api-gateway-demo-sign-java/blob/master/pom.xml
	    	*/
	    	HttpResponse response = HttpUtils.doPost(host, path, method, headers, querys, bodys);
	    	System.out.println(response.toString());
	    	//獲取response的body
	    	System.out.println(EntityUtils.toString(response.getEntity()));
	    } catch (Exception e) {
	    	e.printStackTrace();
	    }
	}

     /**
     * 將圖片檔案轉化為位元組陣列字串，並對其進行Base64編碼處理
     * @param imgFilePath 圖片路徑
     * @return String
     */
    public static String GetImageStr(String imgFilePath) {
        byte[] data = null;
        // 讀取圖片位元組陣列
        try {
            InputStream in = new FileInputStream(imgFilePath);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
       // 對位元組陣列Base64編碼
        return Base64.getEncoder().encodeToString(data);
    }