使用ImageIO在servlet中写入图像文件

发布于 2025-01-07 19:35:32 字数 135 浏览 4 评论 0原文

我正在我的 servlet 中生成图像：

ImageIO.write(bufferedImage,"jpg" ,Outputstream)

但部署后我收到一条错误，指出它无法读取输入文件。

原文

I am generating an image in my servlet:

ImageIO.write(bufferedImage,"jpg" ,Outputstream)

But after deploying I am receiving an error that it can't read the input file.

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安静 2025-01-14 19:35:32

很久以前，我编写了以下代码（它将图像存储为数据库中的 blob 并将其写入服务器输出）：

public class ImageDB extends HttpServlet {
// ...
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 // ...
byte[] bytes = blob.getBytes((long)1, (int)blob.length());

ServletOutputStream out = response.getOutputStream();
out.write(bytes);
out.close(); // Close stream
// ...

  }


}

Long time ago I wrote the following code (it was taking the image stored as blob in database and writing it to the servler output):

public class ImageDB extends HttpServlet {
// ...
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 // ...
byte[] bytes = blob.getBytes((long)1, (int)blob.length());

ServletOutputStream out = response.getOutputStream();
out.write(bytes);
out.close(); // Close stream
// ...

  }


}

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