/**
 * @Description:
 * @author: kpzc
 * @date: 2020-11-02 17:48
 */
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.*;
import javax.net.ssl.SSLException;
 
public class FaceTest {

    public static void main(String[] args) throws Exception{
        main2();
    }
    public static void main1(){
        File file = new File("C:\\Users\\kpzc\\Desktop\\25.jpg");
        byte[] buff = getBytesFromFile(file);
        String url = "https://api-cn.faceplusplus.com/facepp/v3/detect";
        HashMap
 
<String, String> map = new HashMap<>();
        HashMap<String, byte[]> byteMap = 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");
        byteMap.put(
 
"image_file", buff);
        try{
            byte[] bacd = post(url, map, byteMap);
            String str = new String(bacd);
            System.out.println(str);
        }catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    public static void main2(){
        File file = new File("C:\\Users\\kpzc\\Desktop\\26.jpg");
        byte[] buff = getBytesFromFile(file);
        String url = "https://api-cn.faceplusplus.com/facepp/v1/3dface";
        HashMap<String, String> map = new HashMap<>();
        HashMap<String, byte[]> byteMap = new HashMap<>();
        map.put("api_key", "");
        map.put("api_secret", "");
        map.put("texture", "1");
        map.put("mtl", "1");
        byteMap.put("image_file_1", buff);
        try {
            byte[] bacd = post(url, map, byteMap);
            String str = new String(bacd);
            JSONObject jo = JSON.parseObject(str);
            //System.out.println(str);
            final Base64.Decoder decoder = Base64.getDecoder();
            //解碼
            String str1 =new String(decoder.decode(jo.getString("obj_file")), "UTF-8");
//            System.out.println(str1);
            //寫操作
            BufferedWriter bufout = new BufferedWriter(new FileWriter("C:\\Users\\kpzc\\Desktop\\face.obj"));
            bufout.write(str1);
            bufout.close();


            String str2 =new String(decoder.decode(jo.getString("mtl_file")), "UTF-8");
            BufferedWriter bufout2 = new BufferedWriter(new FileWriter("C:\\Users\\kpzc\\Desktop\\face.mtl"));
            bufout2.write(str2);
            bufout2.close();

            String str3 =jo.getString("texture_img");
//            System.out.println(str3);
            GenerateImage(str3, "C:\\Users\\kpzc\\Desktop\\tex.jpg");


        }catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static boolean GenerateImage(String imgStr, String imgFilePath) {// 對位元組陣列字串進行Base64解碼並生成圖片
        if (imgStr == null) // 影象資料為空
            return false;
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            // Base64解碼
            byte[] bytes = decoder.decodeBuffer(imgStr);
            for (int i = 0; i < bytes.length; ++i) {
                if (bytes[i] < 0) {// 調整異常資料
                    bytes[i] += 256;
                }
            }
            // 生成jpeg圖片
            OutputStream out = new FileOutputStream(imgFilePath);
            out.write(bytes);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }
    private final static int CONNECT_TIME_OUT = 30000;
    private final static int READ_OUT_TIME = 50000;
    private static String boundaryString = getBoundary();
    protected static byte[] post(String url, HashMap<String, String> map, HashMap<String, byte[]> fileMap) throws Exception {
        HttpURLConnection conne;
        URL url1 = new URL(url);
        conne = (HttpURLConnection) url1.openConnection();
        conne.setDoOutput(true);
        conne.setUseCaches(false);
        conne.setRequestMethod("POST");
        conne.setConnectTimeout(CONNECT_TIME_OUT);
        conne.setReadTimeout(READ_OUT_TIME);
        conne.setRequestProperty("accept", "*/*");
        conne.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundaryString);
        conne.setRequestProperty("connection", "Keep-Alive");
        conne.setRequestProperty("user-agent", "Mozilla/4.0 (compatible;MSIE 6.0;Windows NT 5.1;SV1)");
        DataOutputStream obos = new DataOutputStream(conne.getOutputStream());
        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();
            obos.writeBytes("--" + boundaryString + "\r\n");
            obos.writeBytes("Content-Disposition: form-data; name=\"" + key
                    + "\"\r\n");
            obos.writeBytes("\r\n");
            obos.writeBytes(value + "\r\n");
        }
        if(fileMap != null && fileMap.size() > 0){
            Iterator fileIter = fileMap.entrySet().iterator();
            while(fileIter.hasNext()){
                Map.Entry<String, byte[]> fileEntry = (Map.Entry<String, byte[]>) fileIter.next();
                obos.writeBytes("--" + boundaryString + "\r\n");
                obos.writeBytes("Content-Disposition: form-data; name=\"" + fileEntry.getKey()
                        + "\"; filename=\"" + encode(" ") + "\"\r\n");
                obos.writeBytes("\r\n");
                obos.write(fileEntry.getValue());
                obos.writeBytes("\r\n");
            }
        }
        obos.writeBytes("--" + boundaryString + "--" + "\r\n");
        obos.writeBytes("\r\n");
        obos.flush();
        obos.close();
        InputStream ins = null;
        int code = conne.getResponseCode();
        try{
            if(code == 200){
                ins = conne.getInputStream();
            }else{
                ins = conne.getErrorStream();
            }
        }catch (SSLException e){
            e.printStackTrace();
            return new byte[0];
        }
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buff = new byte[4096];
        int len;
        while((len = ins.read(buff)) != -1){
            baos.write(buff, 0, len);
        }
        byte[] bytes = baos.toByteArray();
        ins.close();
        return bytes;
    }
    private static String getBoundary() {
        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for(int i = 0; i < 32; ++i) {
            sb.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-".charAt(random.nextInt("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_".length())));
        }
        return sb.toString();
    }
    private static String encode(String value) throws Exception{
        return URLEncoder.encode(value, "UTF-8");
    }

    public static byte[] getBytesFromFile(File f) {
        if (f == null) {
            return null;
        }
        try {
            FileInputStream stream = new FileInputStream(f);
            ByteArrayOutputStream out = new ByteArrayOutputStream(1000);
            byte[] b = new byte[1000];
            int n;
            while ((n = stream.read(b)) != -1)
                out.write(b, 0, n);
            stream.close();
            out.close();
            return out.toByteArray();
        } catch (IOException e) {
        }
        return null;
    }
}

效果如下