本文介绍使用Java SDK对给定的人脸图片进行自定义人脸检索的示例代码。

功能描述

自定义人脸检索根据您输入的待识别人脸图片(face),在指定人脸库(group)中查找并返回最相似的Top5个体(person),返回的Top5个体按照相似度从大到小排序。检索人脸时,必须指定要检索的分组信息(最多指定一个分组)。具体参数说明请参考自定义人脸检索API接口描述文档

准备工作

在进行具体的服务调用之前,请参考以下步骤,完成准备工作:
  1. 创建阿里云AccessKeyId和AccessKeySecret。具体请参考创建AccessKey
  2. 安装Java依赖。具体请参考安装Java依赖

人脸图片检索(URL)代码示例

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.green.model.v20180509.ImageSyncScanRequest;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.HttpResponse;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;

/**
 * 人脸检索
 * @author 
 * @date 2018/06/25
 */
public class FaceScanRequestSample  {


    public static void main(String[] args) throws Exception {
        //请替换成您自己的accessKeyId、accessKeySecret
        IClientProfile profile = DefaultProfile.getProfile("cn-shanghai", "您自己的accessId", "您自己的accessSecret");
        DefaultProfile.addEndpoint("cn-shanghai", "cn-shanghai", "Green", "green.cn-shanghai.aliyuncs.com");
        IAcsClient client = new DefaultAcsClient(profile);

        ImageSyncScanRequest imageSyncScanRequest = new ImageSyncScanRequest();
        imageSyncScanRequest.setAcceptFormat(FormatType.JSON); // 指定api返回格式
        imageSyncScanRequest.setMethod(com.aliyuncs.http.MethodType.POST); // 指定请求方法
        imageSyncScanRequest.setEncoding("utf-8");
        imageSyncScanRequest.setRegionId(regionId);


        List<Map<String, Object>> tasks = new ArrayList<Map<String, Object>>();
        Map<String, Object> task = new LinkedHashMap<String, Object>();
        task.put("dataId", UUID.randomUUID().toString());
        task.put("url", "https://img.alicdn.com/tfs/xxx-550-407.jpg");
        task.put("time", new Date());
        Map<String, String> extras = new HashMap<String, String>();
        extras.put("groupId", "java_sdk_test_group");
        task.put("extras", extras);

        tasks.add(task);
        JSONObject data = new JSONObject();
        /**
         * sface-n: 人脸1-N
         */
        data.put("scenes", Arrays.asList("sface-n"));
        data.put("tasks", tasks);

        imageSyncScanRequest.setHttpContent(data.toJSONString().getBytes("UTF-8"), "UTF-8", FormatType.JSON);

        /**
         * 请务必设置超时时间
         */
        imageSyncScanRequest.setConnectTimeout(3000);
        imageSyncScanRequest.setReadTimeout(6000);

        try {
            HttpResponse httpResponse = client.doAction(imageSyncScanRequest);

            if (httpResponse.isSuccess()) {
                JSONObject scrResponse = JSON.parseObject(new String(httpResponse.getHttpContent(), "UTF-8"));
                System.out.println(JSON.toJSONString(scrResponse, true));
                if (200 == scrResponse.getInteger("code")) {
                    JSONArray taskResults = scrResponse.getJSONArray("data");
                    for (Object taskResult : taskResults) {
                        if(200 == ((JSONObject)taskResult).getInteger("code")){
                            JSONArray sceneResults = ((JSONObject)taskResult).getJSONArray("results");
                            for (Object sceneResult : sceneResults) {
                                String scene = ((JSONObject)sceneResult).getString("scene");
                                String suggestion = ((JSONObject)sceneResult).getString("suggestion");
                                //根据scene和suggetion做相关的处理
                                //do something
                                System.out.println("args = [" + scene + "]");
                                System.out.println("args = [" + suggestion + "]");
                            }
                        }else{
                            System.out.println("task process fail:" + ((JSONObject)taskResult).getInteger("code"));
                        }
                    }
                } else {
                    System.out.println("detect not success. code:" + scrResponse.getInteger("code"));
                }
            } else {
                System.out.println("response not success. status:" + httpResponse.getStatus());
            }
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        } catch (Exception e){
            e.printStackTrace();
        }
    }
}

人脸图片检索(本地文件)代码示例

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.green.model.v20180509.ImageSyncScanRequest;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.HttpResponse;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
import com.aliyuncs.green.extension.uploader.ClientUploader;

/**
 * 人脸检索
 * @author 
 * @date 2018/06/25
 */
public class FaceScanRequestSample  {


    public static void main(String[] args) throws Exception {
        //请替换成您自己的accessKeyId、accessKeySecret
        IClientProfile profile = DefaultProfile.getProfile("cn-shanghai", "您自己的accessId", "您自己的accessSecret");
        DefaultProfile.addEndpoint("cn-shanghai", "cn-shanghai", "Green", "green.cn-shanghai.aliyuncs.com");
        IAcsClient client = new DefaultAcsClient(profile);

        ImageSyncScanRequest imageSyncScanRequest = new ImageSyncScanRequest();
        imageSyncScanRequest.setAcceptFormat(FormatType.JSON); // 指定api返回格式
        imageSyncScanRequest.setMethod(com.aliyuncs.http.MethodType.POST); // 指定请求方法
        imageSyncScanRequest.setEncoding("utf-8");
        imageSyncScanRequest.setRegionId(regionId);
        ClientUploader uploader = ClientUploader.getImageClientUploader(client);
        String url = null;
        try{
            url = uploader.uploadFile("d:/image.jpg");
        }catch (Exception e){
            e.printStackTrace();
        }

        List<Map<String, Object>> tasks = new ArrayList<Map<String, Object>>();
        Map<String, Object> task = new LinkedHashMap<String, Object>();
        task.put("dataId", UUID.randomUUID().toString());
        task.put("url", url);
        task.put("time", new Date());
        Map<String, String> extras = new HashMap<String, String>();
        extras.put("groupId", "java_sdk_test_group");
        task.put("extras", extras);

        tasks.add(task);
        JSONObject data = new JSONObject();
        /**
         * sface-n: 人脸1-N
         */
        data.put("scenes", Arrays.asList("sface-n"));
        data.put("tasks", tasks);

        imageSyncScanRequest.setHttpContent(data.toJSONString().getBytes("UTF-8"), "UTF-8", FormatType.JSON);

        /**
         * 请务必设置超时时间
         */
        imageSyncScanRequest.setConnectTimeout(3000);
        imageSyncScanRequest.setReadTimeout(6000);

        try {
            HttpResponse httpResponse = client.doAction(imageSyncScanRequest);

            if (httpResponse.isSuccess()) {
                JSONObject scrResponse = JSON.parseObject(new String(httpResponse.getHttpContent(), "UTF-8"));
                System.out.println(JSON.toJSONString(scrResponse, true));
                if (200 == scrResponse.getInteger("code")) {
                    JSONArray taskResults = scrResponse.getJSONArray("data");
                    for (Object taskResult : taskResults) {
                        if(200 == ((JSONObject)taskResult).getInteger("code")){
                            JSONArray sceneResults = ((JSONObject)taskResult).getJSONArray("results");
                            for (Object sceneResult : sceneResults) {
                                String scene = ((JSONObject)sceneResult).getString("scene");
                                String suggestion = ((JSONObject)sceneResult).getString("suggestion");
                                //根据scene和suggetion做相关的处理
                                //do something
                                System.out.println("args = [" + scene + "]");
                                System.out.println("args = [" + suggestion + "]");
                            }
                        }else{
                            System.out.println("task process fail:" + ((JSONObject)taskResult).getInteger("code"));
                        }
                    }
                } else {
                    System.out.println("detect not success. code:" + scrResponse.getInteger("code"));
                }
            } else {
                System.out.println("response not success. status:" + httpResponse.getStatus());
            }
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        } catch (Exception e){
            e.printStackTrace();
        }
    }
}