java通过url下载图片保存到本地

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每天一个小方法

import java.io.BufferedInputStream;  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.net.HttpURLConnection;  
import java.net.URL;

public class DownloadPicture {

    public static void main(String[] args) {  
        String imageUrl = "https://example.com/path/to/image.jpg";  
        String savePath = "path/to/save/image.jpg";

        try {  
            downloadPicture(imageUrl, savePath);  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }

    public static void downloadPicture(String imageUrl, String savePath) throws IOException {  
        URL url = new URL(imageUrl);  
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();  
        connection.setRequestMethod("GET");  
        connection.connect();

        int responseCode = connection.getResponseCode();  
        if (responseCode == HttpURLConnection.HTTP_OK) {  
            BufferedInputStream in = new BufferedInputStream(connection.getInputStream());  
            FileOutputStream out = new FileOutputStream(new File(savePath));

            byte[] buffer = new byte[1024];  
            int bytesRead;  
            while ((bytesRead = in.read(buffer)) != -1) {  
                out.write(buffer, 0, bytesRead);  
            }

            // 下载完成，关闭输入输出流  
            in.close();  
            out.close();  
            connection.disconnect();

            System.out.println("图片下载成功，保存路径：" + savePath);  
        } else {  
            System.out.println("无法下载图片，响应码：" + responseCode);  
        }  
    }  
}

文章来源:https://blog.csdn.net/qqasdasdqq/article/details/134536654
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