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| 1 | +package ocr.text; |
| 2 | + |
| 3 | +import java.io.BufferedReader; |
| 4 | +import java.io.InputStreamReader; |
| 5 | +import java.net.HttpURLConnection; |
| 6 | +import java.net.URL; |
| 7 | +import java.util.List; |
| 8 | +import java.util.Map; |
| 9 | + |
| 10 | +import org.json.JSONObject; |
| 11 | + |
| 12 | +public class AuthService { |
| 13 | + |
| 14 | + /** |
| 15 | + * 获取权限token |
| 16 | + * @return 返回示例: |
| 17 | + * { |
| 18 | + * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567", |
| 19 | + * "expires_in": 2592000 |
| 20 | + * } |
| 21 | + */ |
| 22 | + public static String getAuth() { |
| 23 | + // 官网获取的 API Key 更新为你注册的 |
| 24 | + String clientId = "**"; |
| 25 | + // 官网获取的 Secret Key 更新为你注册的 |
| 26 | + String clientSecret = "**"; |
| 27 | + return getAuth(clientId, clientSecret); |
| 28 | + } |
| 29 | + |
| 30 | + /** |
| 31 | + * 获取API访问token |
| 32 | + * 该token有一定的有效期,需要自行管理,当失效时需重新获取. |
| 33 | + * @param ak - 百度云官网获取的 API Key |
| 34 | + * @param sk - 百度云官网获取的 Securet Key |
| 35 | + * @return assess_token 示例: |
| 36 | + * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567" |
| 37 | + */ |
| 38 | + private static String getAuth(String ak, String sk) { |
| 39 | + // 获取token地址 |
| 40 | + String authHost = "https://aip.baidubce.com/oauth/2.0/token?"; |
| 41 | + String getAccessTokenUrl = authHost |
| 42 | + // 1. grant_type为固定参数 |
| 43 | + + "grant_type=client_credentials" |
| 44 | + // 2. 官网获取的 API Key |
| 45 | + + "&client_id=" + "NnA1zs4neW1VzuWtvi2Ykn0c" |
| 46 | + // 3. 官网获取的 Secret Key |
| 47 | + + "&client_secret=" + "aeGoBSGtoNlGquwVHj2jAHDXGGxx0HB2"; |
| 48 | + |
| 49 | + |
| 50 | + //String clientId = "NnA1zs4neW1VzuWtvi2Ykn0c"; |
| 51 | + // 官网获取的 Secret Key |
| 52 | + // String clientSecret = "aeGoBSGtoNlGquwVHj2jAHDXGGxx0HB2"; |
| 53 | + |
| 54 | + |
| 55 | + try { |
| 56 | + URL realUrl = new URL(getAccessTokenUrl); |
| 57 | + // 打开和URL之间的连接 |
| 58 | + HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection(); |
| 59 | + connection.setRequestMethod("GET"); |
| 60 | + connection.connect(); |
| 61 | + // 获取所有响应头字段 |
| 62 | + Map<String, List<String>> map = connection.getHeaderFields(); |
| 63 | + // 遍历所有的响应头字段 |
| 64 | + for (String key : map.keySet()) { |
| 65 | + System.err.println(key + "--->" + map.get(key)); |
| 66 | + } |
| 67 | + // 定义 BufferedReader输入流来读取URL的响应 |
| 68 | + BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream())); |
| 69 | + StringBuilder result = new StringBuilder(); |
| 70 | + String line; |
| 71 | + while ((line = in.readLine()) != null) { |
| 72 | + result.append(line); |
| 73 | + } |
| 74 | + /** |
| 75 | + * 返回结果示例 |
| 76 | + */ |
| 77 | + System.err.println("result:" + result); |
| 78 | + JSONObject jsonObject = new JSONObject(result.toString()); |
| 79 | + return jsonObject.getString("access_token"); |
| 80 | + } catch (Exception e) { |
| 81 | + System.err.printf("获取token失败!"); |
| 82 | + e.printStackTrace(System.err); |
| 83 | + } |
| 84 | + return null; |
| 85 | + } |
| 86 | + |
| 87 | + public static void main(String[] args) { |
| 88 | + getAuth(); |
| 89 | + } |
| 90 | + |
| 91 | +} |
| 92 | + |
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