将图片作为请求正文添加到http请求

import org.apache.http.HttpEntity;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

public class ImageUploadExample {
    public static void main(String[] args) throws IOException {
        // 读取图片文件
        File imageFile = new File("path/to/image.jpg");
        byte[] imageData = Files.readAllBytes(imageFile.toPath());

        // 创建HttpClient实例
        HttpClient httpClient = HttpClientBuilder.create().build();

        // 构建HTTP请求
        HttpPost httpPost = new HttpPost("http://example.com/upload");
        httpPost.setHeader("Content-Type", "image/jpeg");

        // 将图片数据作为请求正文添加到HTTP请求
        HttpEntity entity = new ByteArrayEntity(imageData);
        httpPost.setEntity(entity);

        // 发送HTTP请求
        HttpResponse response = httpClient.execute(httpPost);

        // 处理服务器响应
        int statusCode = response.getStatusLine().getStatusCode();
        String responseBody = EntityUtils.toString(response.getEntity());
        System.out.println("Status Code: " + statusCode);
        System.out.println("Response Body: " + responseBody);
    }
}