java调用百度接口识别图片文字

你可以使用百度的OCR接口来实现Java调用百度接口别图片文字的功能。首先，你需要注册百度开发者账号并创建应用，获取到API Key和Secret Key。

接下来，你可以使用Java的网络请求库，例如Apache HttpClient或OkHttp，来发送HTTP POST请求给百度OCR接口。在请求中，你需要包含以下参数：

- 接口地址：https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic
- 请求参数：image（图片的Base64编码）、access_token（通过API Key和Secret Key获取的访问令牌）
- 请求头：Content-Type设置为application/x-www-form-urlencoded

以下是一个示例代码：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class BaiduOCR {
    public static void main(String[] args) throws IOException {
        // 设置API Key和Secret Key
        String apiKey = "your_api_key";
        String secretKey = "your_secret_key";

        // 获取访问令牌
        String accessToken = getAccessToken(apiKey, secretKey);

        // 图片路径
        String imagePath = "path_to_your_image";

        // 将图片转为Base64编码
        String imageBase64 = getImageBase64(imagePath);

        // 调用百度OCR接口
        String result = callBaiduOCR(imageBase64, accessToken);

        System.out.println(result);
    }

    // 获取访问令牌
    private static String getAccessToken(String apiKey, String secretKey) throws IOException {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost("https://aip.baidubce.com/oauth/2.0/token");

        List<NameValuePair> params = new ArrayList<>();
        params.add(new BasicNameValuePair("grant_type", "client_credentials"));
        params.add(new BasicNameValuePair("client_id", apiKey));
        params.add(new BasicNameValuePair("client_secret", secretKey));

        httpPost.setEntity(new UrlEncodedFormEntity(params));

        HttpResponse response = httpClient.execute(httpPost);
        HttpEntity entity = response.getEntity();
        String result = EntityUtils.toString(entity);

        httpClient.close();

        return result.split("\"")[3];
    }

    // 将图片转为Base64编码
    private static String getImageBase64(String imagePath) {
        // TODO: 实现将图片转为Base64编码的逻辑
        return "";
    }

    // 调用百度OCR接口
    private static String callBaiduOCR(String imageBase64, String accessToken) throws IOException {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost("https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic");

        List<NameValuePair> params = new ArrayList<>();
        params.add(new BasicNameValuePair("image", imageBase64));
        params.add(new BasicNameValuePair("access_token", accessToken));

        httpPost.setEntity(new UrlEncodedFormEntity(params));

        HttpResponse response = httpClient.execute(httpPost);
        HttpEntity entity = response.getEntity();
        String result = EntityUtils.toString(entity);

        httpClient.close();

        return result;
    }
}

请注意，在上述代码中，你需要实现将图片转为Base64编码的逻辑，你可以使用第三方库，如Apache Commons Codec，来实现该功能。

希望这能帮到你！如果有任何其他问题，请随时提问。