从URL将图像保存到服务器

import java.net.HttpURLConnection;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.File;
import java.io.IOException;

public class ImageSaver {
    public static void saveImage(String imageUrl, String fileName) throws IOException {
        URL url = new URL(imageUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");

        int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            String imageData = response.toString();
            saveImageData(imageData, fileName);
        } else {
            System.out.println("Error: " + responseCode);
        }
    }

    private static void saveImageData(String imageData, String fileName) throws IOException {
        byte[] bytes = imageData.getBytes();
        File file = new File(fileName);
        file.createNewFile();
        OutputStream outputStream = new FileOutputStream(file);
        outputStream.write(bytes);
        outputStream.flush();
        outputStream.close();
    }
}

import org.hueniverse.multipart.MultipartUpload;
import org.hueniverse.multipart.FilePart;
import org.hueniverse.multipart.StringPart;
import org.hueniverse.multipart.Part;
import org.hueniverse.multipart.MultipartRequest;
import org.hueniverse.multipart.MultipartResponse;

public class ImageSaver {
    public static void saveImage(String imageUrl, String fileName) throws Exception {
        MultipartUpload.Builder requestBuilder = new MultipartUpload.Builder();
        requestBuilder.addFile(new StringPart("image", imageUrl, "image/jpeg"));

        MultipartRequest request = requestBuilder.build();
        MultipartResponse response = request.send();

        if (response.getStatus() == MultipartResponse.Status.OK) {
            String imageData = response.getParts().get(0).getContents();
            saveImageData(imageData, fileName);
        } else {
            System.out.println("Error: " + response.getStatus());
        }
    }

    private static void saveImageData(String imageData, String fileName) throws Exception {
        byte[] bytes = imageData.getBytes();
        File file = new File(fileName);
        file.createNewFile();
        FileOutputStream outputStream = new FileOutputStream(file);
        outputStream.write(bytes);
        outputStream.flush();
        outputStream.close();
    }
}