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;
/**
* 说明：获取文字识别token类
* from：www.fhadmin.org
*/
public class AuthTextService {
/**
* 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 = "xxxxx;
// 官网获取的 Secret Key 更新为你注册的
String clientSecret = "xxxxx";
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<String, List<String>> 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;
}
}
package org.fh.util;
import java.net.URLEncoder;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
/**
* 说明：手写文字识别
* from：www.fhadmin.org
*/
public class Handwriting {
/**
* @param imgBase64Str
* @param accessToken
* @return
*/
public static String handwriting(String imgBase64Str, String accessToken) {
String url = "https://aip.baidubce.com/rest/2.0/ocr/v1/handwriting"; //请求url
try {
String imgParam = URLEncoder.encode(imgBase64Str, "UTF-8");
String param = "image=" + imgParam;
String result = HttpUtil.post(url, accessToken, param);
JSONObject jsonMsg = JSONObject.fromObject(result);
int words_result_num = Integer.parseInt(jsonMsg.getString("words_result_num")); //识别结果数，表示words_result的元素个数
if(words_result_num > 0) {
StringBuffer strb = new StringBuffer();
JSONArray jsonArray= jsonMsg.getJSONArray("words_result");
for(int i=0;i<jsonArray.size();i++){
JSONObject object = jsonArray.getJSONObject(i);
String words = object.getString("words");
strb.append(words);
strb.append("\r\n");
}
result = strb.toString();
}else {
result = "null";
}
return result;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
