Java face recognition calls Baidu API

FH-Admin 2020-11-09 19:27:34
java face recognition calls baidu


1. obtain token

package org.fh.util;
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;
/**
* explain : Get Baidu face recognition token class
* author :F-H
* Official website :www.12b3.com
*/
public class AuthService {
/**
* Access permissions token
* @return Return to example :
* {
* "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
* "expires_in": 2592000
* }
*/
public static String getAuth() {
// Obtained from the official website API Key Update your registered 
String clientId = "xxxx";
// Obtained from the official website Secret Key Update your registered 
String clientSecret = "ssss";
return getAuth(clientId, clientSecret);
}
/**
* obtain API visit token
* The token It has a certain period of validity , It needs to be managed by itself , When it fails, it needs to be retrieved again .
* @param ak - Baidu cloud official website API Key
* @param sk - Baidu cloud official website Securet Key
* @return assess_token Example :
* "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
*/
public static String getAuth(String ak, String sk) {
// obtain token Address 
String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
String getAccessTokenUrl = authHost
// 1. grant_type For fixed parameters 
+ "grant_type=client_credentials"
// 2. Obtained from the official website API Key
+ "&client_id=" + ak
// 3. Obtained from the official website Secret Key
+ "&client_secret=" + sk;
try {
URL realUrl = new URL(getAccessTokenUrl);
// Open and URL Connection between 
HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
connection.setRequestMethod("GET");
connection.connect();
// Get all response header fields 
Map<String, List<String>> map = connection.getHeaderFields();
// Traverse all response header fields 
for (String key : map.keySet()) {
System.err.println(key + "--->" + map.get(key));
}
// Definition BufferedReader Input stream to read URL Response 
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String result = "";
String line;
while ((line = in.readLine()) != null) {
result += line;
}
/**
* Return an example of the result
*/
JSONObject jsonObject = new JSONObject(result);
String access_token = jsonObject.getString("access_token");
return access_token;
} catch (Exception e) {
System.err.printf(" obtain token Failure !");
e.printStackTrace(System.err);
}
return null;
}
}

2. Face comparison

package org.fh.util;
import java.util.*;
import net.sf.json.JSONObject;
/**
* explain : Face comparison
* author :F-H
* Official website :www.1b23.com
*/
public class FaceMatch {
public static String faceMatch(List<Object> list) {
// request url
String url = "https://aip.baidubce.com/rest/2.0/face/v3/match";
try {
String param = GsonUtils.toJson(list);
// Note that this is just to simplify the encoding, and to get every request access_token, The online environment access_token There is an expiration date , The client can cache itself , Retrieve after expiration .
String accessToken = AuthService.getAuth();
String result = HttpUtil.post(url, accessToken, "application/json", param);
return result;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
//PHOTODATA1 picture 1 Of base64 code 
//PHOTODATA2 picture 2 Of base64 code Back to score Greater than 80 It's the same person 
public static String getScore(String PHOTODATA1,String PHOTODATA2) {
List<Object> list = new ArrayList<Object>();
Map<String,String> map1 = new HashMap<String,String>();
map1.put("image", PHOTODATA1);
map1.put("image_type", "BASE64");
map1.put("face_type", "LIVE");
map1.put("quality_control", "NONE");
map1.put("liveness_control", "NONE");
list.add(map1);
Map<String,String> map2 = new HashMap<String,String>();
map2.put("image", PHOTODATA2);
map2.put("image_type", "BASE64");
map2.put("face_type", "LIVE");
map2.put("quality_control", "NONE");
map2.put("liveness_control", "NONE");
list.add(map2);
String resultStr = FaceMatch.faceMatch(list);
JSONObject jsonMsg = JSONObject.fromObject(resultStr);
String error_msg = jsonMsg.getString("error_msg");
String score = "0";
if("SUCCESS".equals(error_msg)) {
String result = jsonMsg.getString("result");
JSONObject jsonResult = JSONObject.fromObject(result);
score = jsonResult.getString("score");
}
return score;
}
}

 

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