rest2.0ocrv1license_plate.java
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package baidu.com;
import okhttp3.*;
import org.json.JSONObject;
import java.util.concurrent.TimeUnit;
import java.io.*;
/**
* 需要添加依赖
* <!-- https://mvnrepository.com/artifact/com.squareup.okhttp3/okhttp -->
* <dependency>
* <groupId>com.squareup.okhttp3</groupId>
* <artifactId>okhttp</artifactId>
* <version>4.12.0</version>
* </dependency>
*/
class Sample {
public static final String API_KEY = "iKKGwJRwHxIe9CAAXgafSpyt";
public static final String SECRET_KEY = "FS0byCisfASTaqoaEcRDoye4wiPFuosq";
public static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().readTimeout(300, TimeUnit.SECONDS).build();
public static void main(String []args) throws IOException{
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "url=https%3A%2F%2Fbaidu-ai.bj.bcebos.com%2Focr%2Flicense_plate.jpeg&multi_detect=false&multi_scale=false&detect_complete=false&detect_risk=false");
Request request = new Request.Builder()
.url("https://aip.baidubce.com/rest/2.0/ocr/v1/license_plate?access_token=" + getAccessToken())
.method("POST", body)
.addHeader("Content-Type", "application/x-www-form-urlencoded")
.addHeader("Accept", "application/json")
.build();
Response response = HTTP_CLIENT.newCall(request).execute();
System.out.println(response.body().string());
}
/**
* 从用户的AK，SK生成鉴权签名（Access Token）
*
* @return 鉴权签名（Access Token）
* @throws IOException IO异常
*/
static String getAccessToken() throws IOException {
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials&client_id=" + API_KEY
+ "&client_secret=" + SECRET_KEY);
Request request = new Request.Builder()
.url("https://aip.baidubce.com/oauth/2.0/token")
.method("POST", body)
.addHeader("Content-Type", "application/x-www-form-urlencoded")
.build();
Response response = HTTP_CLIENT.newCall(request).execute();
return new JSONObject(response.body().string()).getString("access_token");
}
}