play framework Blob and FileAttachment

Question

play以前版本上传文件是FileAttachment，现在更新了Blob.请问Blob怎么用啊？

Answer 1

   
public
static
void
getPicture
(
long
id
)
{

Answer 2

遇到两个问题：1。上传的是图片，怎么让图片在页面展示？2。我下载的时候打开的是个页面，是乱码？

Answer 3

谢谢，我去试试！

Answer 4

public
class
Application
extends
Controller
{

Answer 5

The HTML form:

<form action="@{Article.uploadPhoto()}" method="POST" enctype="multipart/form-data">
    <input type="text" name="title" />
    <input type="file" id="photo" name="photo" />
    <input type="submit" value="Send it..." />
</form>

And the Java code:

public static void uploadPhoto(String title, File photo) {
   ...
}

How could it be easier?