java调用face++人脸检测和分析接口

import java.io.*;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.net.URL;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;

public class FaceDetect {
    public static void main(String[] args) throws Exception {
        String urlpath = "/Users/sunxianyan/Desktop/test/input.csv";
        File urlcsv = new File (urlpath);
        BufferedReader bufferedReader = new BufferedReader (new FileReader (urlpath));
        String line = null;
        while ((line = bufferedReader.readLine ()) != null) {
            String[] item = line.split (",");
            String url = "https://api-cn.faceplusplus.com/facepp/v3/detect";

            HashMap<String, String> map = new HashMap<> ();
            map.put ("api_key", "***");
            map.put ("api_secret", "***");
            map.put ("return_landmark", "1");
            map.put ("return_attributes", "gender,age,smiling,headpose,facequality,blur,eyestatus,emotion,ethnicity,beauty,mouthstatus,eyegaze,skinstatus");

            HashMap<String, byte[]> byteMap = new HashMap<> ();
            downloadByNIO2 (item[0], urlcsv.getParent () + File.separator + "temp", item[0].substring (item[0].lastIndexOf ("/") + 1));
            File file = new File (urlcsv.getParent () + File.separator + "temp" + File.separator + item[0].substring (item[0].lastIndexOf ("/") + 1));

            detectFace(url, map, file);
        }
    }

    protected static void detectFace(String url, HashMap<String, String> map, File file) throws Exception {

        CloseableHttpClient client = HttpClients.createDefault();
        HttpPost post = new HttpPost(url);

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();

        Iterator iter = map.entrySet ().iterator ();
        while (iter.hasNext ()) {
            Map.Entry<String, String> entry = (Map.Entry) iter.next ();
            String key = entry.getKey ();
            String value = entry.getValue ();
            builder.addTextBody(key, value);
        }
        builder.addBinaryBody("image_file", file, ContentType.MULTIPART_FORM_DATA, file.getName());

        HttpEntity multipart = builder.build();
        post.setEntity(multipart);

        CloseableHttpResponse response = client.execute(post);
        HttpEntity responseEntity = response.getEntity();
        String sResponse=EntityUtils.toString(responseEntity, "UTF-8");
        System.out.println("Post 返回结果"+sResponse);
    }

    //图片链接下载
    public static void downloadByNIO2(String url, String saveDir, String fileName) {
        try (InputStream ins = new URL (url).openStream ()) {
            Path target = Paths.get (saveDir, fileName);
            Files.createDirectories (target.getParent ());
            Files.copy (ins, target, StandardCopyOption.REPLACE_EXISTING);
        } catch (IOException e) {
            e.printStackTrace ();
        }
    }
}