SpringMVC集成百度人脸识别登录系统

（一）注册账号

http://ai.baidu.com/?track=cp:aipinzhuan|pf:pc|pp:AIpingtai|pu:title|ci:|kw:10005792

（二）创建应用

填写应用名称，其他默认

（三）创建人脸库并上传照片

（四）下载工具类

（五）获取token类

package com.baidu.ai.aip.auth;

import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import java.util.Map;

/**
 * 获取token类
 */
public class AuthService {

    /**
     * 获取权限token
     * @return 返回示例：
     * {
     * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
     * "expires_in": 2592000
     * }
     */
    public static String getAuth() {
        // 官网获取的 API Key 更新为你注册的
        String clientId = "百度云应用的AK";
        // 官网获取的 Secret Key 更新为你注册的
        String clientSecret = "百度云应用的SK";
        return getAuth(clientId, clientSecret);
    }

    /**
     * 获取API访问token
     * 该token有一定的有效期，需要自行管理，当失效时需重新获取.
     * @param ak - 百度云官网获取的 API Key
     * @param sk - 百度云官网获取的 Securet Key
     * @return assess_token 示例：
     * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
     */
    public static String getAuth(String ak, String sk) {
        // 获取token地址
        String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + ak
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + sk;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            System.err.println("result:" + result);
            JSONObject jsonObject = new JSONObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.printf("获取token失败！");
            e.printStackTrace(System.err);
        }
        return null;
    }

}

（六）Result 类

public class Result {
private String group_id;
private String user_id;
private String user_info;
private double score;
public String getGroup_id() {
	return group_id;
}
public void setGroup_id(String group_id) {
	this.group_id = group_id;
}
public String getUser_id() {
	return user_id;
}
public void setUser_id(String user_id) {
	this.user_id = user_id;
}
public String getUser_info() {
	return user_info;
}
public void setUser_info(String user_info) {
	this.user_info = user_info;
}
public double getScore() {
	return score;
}
public void setScore(double score) {
	this.score = score;
}

（七）导包

    
      com.alibaba
      fastjson
      1.2.47
    

    
    
      javax.servlet
      javax.servlet-api
      3.1.0
      provided
    
    
    
      org.apache.httpcomponents
      httpclient
      4.5.3
    
    
    
      com.google.code.gson
      gson
      2.8.2
    
    
    
      commons-codec
      commons-codec
      1.11
    
    
    
      commons-io
      commons-io
      2.6
    
    
    
      org.json
      json
      20160810
    
    
    
      net.sf.json-lib
      json-lib
      2.4
    

（八）控制层

//人脸识别登录
    @RequestMapping("/loginFace")
    public void loginFace(HttpServletRequest req,HttpServletResponse resp) throws IOException {
        String base64 = req.getParameter("base64");
        try {
//			String access_token = AccessTokenUtil.getAccessToken();
            String url="https://aip.baidubce.com/rest/2.0/face/v3/search";
            CloseableHttpClient client = HttpClients.createDefault();
            HttpPost post = new HttpPost(url+"?access_token="+ AuthService.getAuth());
            post.setHeader("Content-Type","application/json");
            List list = new ArrayList();
            list.add(new BasicNameValuePair("image", base64));
            list.add(new BasicNameValuePair("image_type", "BASE64"));
            list.add(new BasicNameValuePair("group_id_list", "login"));
            UrlEncodedFormEntity uploadEntity = new UrlEncodedFormEntity(list);
            post.setEntity(uploadEntity);
            CloseableHttpResponse res = client.execute(post);

            if(res.getStatusLine().getStatusCode()==200){
                HttpEntity entity = res.getEntity();
                String s= EntityUtils.toString(entity, "utf-8");
                JsonObject JsonObject = new JsonParser().parse(s).getAsJsonObject();
                JsonArray jsonArray = JsonObject.get("result").getAsJsonObject().get("user_list").getAsJsonArray();
                for (JsonElement jsonElement : jsonArray) {
                    Gson gson = new Gson();
                    Result bean = gson.fromJson(jsonElement, Result.class);
                    double score = bean.getScore();
                    if (score>90) {
                        //这个值自己定，一般90以上就可以了
                        //执行匹配成功后的代码
                    } else {
                        //匹配不成功的代码
                    }