If you want to test the portlet from the same computer where Pluto is installed, you won't be able to see the progress bar because the maximum upload size is set to 20mb.

如果从安装了Pluto的计算机测试此portlet，就不会看到进度条，原因是所设置的上载大小最大为20 MB。

youdao

Increasing the maximum upload file size is not a difficult task but developers need to know the best approach to overriding the default.

想增加这个尺寸的上限并没有什么难度，不过开发者需要知道怎样做才是最好的方法。

youdao

Type in a number such as 1 in the ID text box and browse to the image file you want to upload (maximum size is 150 KB).

在ID文本框中输入一个数字，例如1并找到要上载的图象文件(最大为150 KB)。

youdao