java上传照片到指定服务器

要将照片上传到指定服务器，你可以使用Java的HttpClient库来实现。下面是一个简单的示例代码：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.impl.client.HttpClients;

public class PhotoUploader {
    public static void main(String[] args) {
        String serverUrl = "http://example.com/upload";  // 替换为目标服务器的URL
        
        File photoFile = new File("path/to/photo.jpg");  // 替换为你的照片文件路径
        
        try {
            HttpClient httpClient = HttpClients.createDefault();
            HttpPost httpPost = new HttpPost(serverUrl);
            
            InputStream photoStream = new FileInputStream(photoFile);
            InputStreamBody inputStreamBody = new InputStreamBody(photoStream, ContentType.IMAGE_JPEG, "photo.jpg");
            
            HttpEntity requestEntity = MultipartEntityBuilder.create()
                .addPart("photo", inputStreamBody)
                .build();
            
            httpPost.setEntity(requestEntity);
            
            HttpResponse response = httpClient.execute(httpPost);
            
            // 处理响应...
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

在示例中，你需要将`serverUrl`替换为目标服务器的URL，将`photoFile`替换为你要上传的照片文件的路径。代码会使用HttpClient库发送一个POST请求，将照片作为multipart/form-data形式的请求体发送到服务器。你可以根据实际情况处理服务器的响应。记得在使用代码前，确保已经导入了HttpClient库的依赖。