如何通过servlet java发送byte []

Question

我想将图像转换为byte[]并通过servlet发送。 我已将图像转换为byte[]但将其发送给客户端??

protected void doGet(HttpServletRequest request, HttpServletResponse response) 
    throws ServletException, IOException {

    String name=request.getParameter("name");
    File f = new File("/Users/shilu/MyProject/Chat/Photo/" + name);
    byte[] data = Files.readAllBytes(f.toPath());
    //What to do now??
}

Answer 1

这取决于您需要指定与您的图片类型匹配的content type的图片类型。

所以这里假设您要发送png，代码可能是这样的：

// Set the media type matching with my image
response.setContentType("image/png");
// Write the data
try (OutputStream out = response.getOutputStream()) {
    out.write(data);
}