如何使用JAVA向Microsoft Cognitive Face API发送本地图像而不是URL

我试图使用Microsoft Cognitive Services的Face API进行游戏。我想知道如何通过其余API调用Face API来发送本地图像，并使用JAVA来请求Face API的结果。任何人都可以帮助我吗？如何使用JAVA向Microsoft Cognitive Face API发送本地图像而不是URL

微软在其网站上提供的测试选择只需要URL，我尝试将我的本地路径转换为URL并将其作为输入，但不起作用。

来源

2016-09-17 Ganesh Taduri

不确定你正在查看“他们的网站”的哪一部分。从“Microsoft Cognitive Services - Documentation”，https://www.microsoft.com/cognitive-services/en-us/face-api/documentation/get-started-with-face-api/gettingstartedwithfaceapiinjavaforandroid，它看起来像te' detect'方法需要一个包含JPEG格式图像的'InputSteam'。 – david

一个选项是使用FileEntity类。

// This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/) 
import java.io.File; 
import java.net.URI; 
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.entity.FileEntity; 
import org.apache.http.impl.client.HttpClients; 
import org.apache.http.util.EntityUtils; 

public class Face 
{ 
    public static void main(String[] args) 
    { 
     HttpClient httpclient = HttpClients.createDefault(); 

     try 
     { 
      URIBuilder builder = new URIBuilder("https://api.projectoxford.ai/face/v1.0/detect"); 

      builder.setParameter("returnFaceId", "true"); 

      URI uri = builder.build(); 
      HttpPost request = new HttpPost(uri); 
      request.setHeader("Ocp-Apim-Subscription-Key", "YOUR_KEY"); 


      // Request body 
      File file = new File("YOUR_FILE"); 
      FileEntity reqEntity = new FileEntity(file, "application/octet-stream"); 
      request.setEntity(reqEntity); 

      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()); 
     } 
    } 
}

来源

2016-09-19 15:14:23 cthrash

使用FileEntity似乎是解决问题最优雅的方式。对ctrash代码进行了小小修改：由于构造函数FileEntity(File, String)已被弃用，所以必须使用构造函数FileEntity(File, ContentType)。在这种情况下，头文件和图像文件的内容类型必须是“application/octet-stream”。我得到它与这个代码一起工作：

// This sample uses the Apache HTTP client from HTTP Components (http://hc.apache.org/httpcomponents-client-ga/) 
import java.io.File; 
import java.net.URI; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.client.utils.URIBuilder; 
import org.apache.http.entity.ContentType; 
import org.apache.http.entity.FileEntity; 
import org.apache.http.impl.client.CloseableHttpClient; 
import org.apache.http.impl.client.HttpClients; 
import org.apache.http.util.EntityUtils; 

public class PostTest 
{ 
    public static void main(String[] args) 
    { 
     CloseableHttpClient httpclient = HttpClients.createDefault(); 

     try 
     { 
      URIBuilder uriBuilder = new URIBuilder("https://westus.api.cognitive.microsoft.com/face/v1.0/detect"); 

      uriBuilder.setParameter("returnFaceId", "true"); 
      uriBuilder.setParameter("returnFaceLandmarks", "false"); 
      uriBuilder.setParameter("returnFaceAttributes", "age"); 

      URI uri = uriBuilder.build(); 
      HttpPost request = new HttpPost(uri); 

      // Request headers. Replace the example key below with your valid subscription key. 
      request.setHeader("Content-Type", "application/octet-stream"); 
      request.setHeader("Ocp-Apim-Subscription-Key", "YOUR_SUBSCRIPTION_KEY"); 



      // Request body 


      File file = new File("YOUR_IMAGE_FILE"); 

      FileEntity reqEntity = new FileEntity(file, ContentType.APPLICATION_OCTET_STREAM); 
      request.setEntity(reqEntity); 

      HttpResponse response = httpclient.execute(request); 
      HttpEntity entity = response.getEntity(); 
      System.out.println(response.getStatusLine()); 

      if (entity != null) 
      { 
       System.out.println(EntityUtils.toString(entity)); 

      } 
     } 
     catch (Exception e) 
     { 
      System.out.println(e.getMessage()); 
     } 
    } 
}

正确执行后，终端将显示面部API返回的JSON对象。

谢谢你，cthrash，因为这是互联网上唯一的地方，我学会了如何做到这一点！

来源

2017-03-20 13:14:45 Textilienhersteller

如何使用JAVA向Microsoft Cognitive Face API发送本地图像而不是URL

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