调用百度图像审核接口，使用Java语言再写3个示例代码

好的，以下是三个使用Java调用百度图像审核接口的示例代码：

1. 使用Java的HttpURLConnection实现：

import java.io.*;
import java.net.*;

public class ImageAuditDemo1 {
    public static void main(String[] args) throws Exception {
        String url = "https://aip.baidubce.com/rest/2.0/solution/v1/img_censor/v2/user_defined";
        String apiKey = "Your API Key";
        String secretKey = "Your Secret Key";
        String filePath = "image.jpg";

        URL requestUrl = new URL(url + "?access_token=" + getAccessToken(apiKey, secretKey));

        HttpURLConnection conn = (HttpURLConnection) requestUrl.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setDoOutput(true);

        OutputStream outputStream = conn.getOutputStream();
        FileInputStream fileInputStream = new FileInputStream(filePath);
        byte[] buffer = new byte[4096];
        int bytesRead = -1;
        while ((bytesRead = fileInputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }
        fileInputStream.close();
        outputStream.close();

        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String line = null;
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
    }

    private static String getAccessToken(String apiKey, String secretKey) {
        try {
            String authUrl = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id="
                    + apiKey + "&client_secret=" + secretKey;
            URL url = new URL(authUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line = null;
            StringBuilder sb = new StringBuilder();
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            reader.close();
            String jsonStr = sb.toString();
            int startIndex = jsonStr.indexOf("access_token") + "access_token".length() + 3;
            int endIndex = jsonStr.indexOf(",", startIndex) - 1;
            return jsonStr.substring(startIndex, endIndex);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

2. 使用Java的HttpClient实现：

import java.io.*;
import org.apache.http.*;
import org.apache.http.client.*;
import org.apache.http.client.methods.*;
import org.apache.http.entity.mime.*;
import org.apache.http.entity.mime.content.*;
import org.apache.http.impl.client.*;
import org.apache.http.message.*;

public class ImageAuditDemo2 {
    public static void main(String[] args) throws Exception {
        String url = "https://aip.baidubce.com/rest/2.0/solution/v1/img_censor/v2/user_defined";
        String apiKey = "Your API Key";
        String secretKey = "Your Secret Key";
        String filePath = "image.jpg";

        String accessToken = getAccessToken(apiKey, secretKey);

        HttpClient httpClient = HttpClientBuilder.create().build();
        HttpPost httpPost = new HttpPost(url + "?access_token=" + accessToken);

        FileBody fileBody = new FileBody(new File(filePath));
        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.addPart("image", fileBody);
        HttpEntity entity = builder.build();
        httpPost.setEntity(entity);

        HttpResponse response = httpClient.execute(httpPost);
        HttpEntity responseEntity = response.getEntity();
        BufferedReader reader = new BufferedReader(new InputStreamReader(responseEntity.getContent()));

        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }

        System.out.println(sb.toString());
    }

    private static String getAccessToken(String apiKey, String secretKey) {
        try {
            String authUrl = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id="
                    + apiKey + "&client_secret=" + secretKey;
            HttpClient httpClient = HttpClientBuilder.create().build();
            HttpGet httpGet = new HttpGet(authUrl);
            HttpResponse response = httpClient.execute(httpGet);
            HttpEntity entity = response.getEntity();
            BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent()));
            StringBuilder sb = new StringBuilder();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            reader.close();
            String jsonStr = sb.toString();
            int startIndex = jsonStr.indexOf("access_token") + "access_token".length() + 3;
            int endIndex = jsonStr.indexOf(",", startIndex) - 1;
            return jsonStr.substring(startIndex, endIndex);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

3. 使用Java的OkHttp实现：

import java.io.*;
import okhttp3.*;

public class ImageAuditDemo3 {
    public static void main(String[] args) throws Exception {
        String url = "https://aip.baidubce.com/rest/2.0/solution/v1/img_censor/v2/user_defined";
        String apiKey = "Your API Key";
        String secretKey = "Your Secret Key";
        String filePath = "image.jpg";

        String accessToken = getAccessToken(apiKey, secretKey);

        OkHttpClient httpClient = new OkHttpClient();
        RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM)
                .addFormDataPart("image", "image.jpg", RequestBody.create(MediaType.parse("image/jpeg"), new File(filePath)))
                .build();
        Request request = new Request.Builder().url(url + "?access_token=" + accessToken).post(requestBody).build();

        Response response = httpClient.newCall(request).execute();
        String responseBody = response.body().string();
        System.out.println(responseBody);
    }

    private static String getAccessToken(String apiKey, String secretKey) {
        try {
            String authUrl = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id="
                    + apiKey + "&client_secret=" + secretKey;
            OkHttpClient httpClient = new OkHttpClient();
            Request request = new Request.Builder().url(authUrl).get().build();
            Response response = httpClient.newCall(request).execute();
            String responseBody = response.body().string();
            int startIndex = responseBody.indexOf("access_token") + "access_token".length() + 3;
            int endIndex = responseBody.indexOf(",", startIndex) - 1;
            return responseBody.substring(startIndex, endIndex);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

需要注意的是，以上示例代码中的 `Your API Key` 和 `Your Secret Key` 应该替换成你在百度AI平台上申请的API Key和Secret Key。同时，示例代码中的图片路径也需要替换成你自己的图片路径。