java - 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

这取决于图像的类型，因为您需要指定 content type与您的图像类型相匹配。

因此，假设您要发送 png，代码可能如下所示:

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