and I think the finally answer is here:
http://www.oracle.com/technetwork/articles/javase/headless-136834.html
<http://www.oracle.com/technetwork/articles/javase/headless-136834.html>
just for record.
Mike.G
> 在 2015年9月24日，12:05，Mike Guo <hongw...@163.com> 写道：
>
> ok, finally, I got the solution for this one. although I don’t know why.
>
> I just add one java param in here:
> java -Djava.awt.headless=true then it will be gone.
>
>
>
> thanks
>
>
> Mike.G
>
>
>> 在 2015年9月24日，12:02，Mike Guo <hongw...@163.com> 写道：
>>
>> ok, I just found it is not related with tomcat or struts.
>>
>> I just use this code:
>>
>>
>> import java.util.Arrays;
>>
>> import javax.imageio.ImageIO;
>>
>> public class ListImageFormatters {
>>
>> public static void main(String[] args) {
>> String[] readerFormatNames = ImageIO.getReaderFormatNames();
>> //[BMP, bmp, jpg, JPG, wbmp, jpeg, png, PNG, JPEG, WBMP, GIF, gif]
>> System.out.println(Arrays.toString(readerFormatNames));
>>
>> //[jpg, BMP, bmp, JPG, jpeg, wbmp, png, JPEG, PNG, WBMP, GIF, gif]
>> String[] writerFormatNames = ImageIO.getWriterFormatNames();
>> System.out.println(Arrays.toString(writerFormatNames));
>> }
>>
>> }
>>
>> and it will start the Bootstrap too.
>>
>>
>> so, look like it is belong to JDK part.
>>
>> but I don’t understand it still. is there anyone can share some tips to me?
>>
>>
>> thanks so much
>>
>>
>> Mike.G
>>
>>
>>
>>
>>> 在 2015年9月24日，11:32，Mike Guo <hongw...@163.com> 写道：
>>>
>>> Anyone? Please.
>>>
>>>
>>> 发自我的 iPhone
>>>
>>>> 在 2015年9月24日，02:15，Mike Guo <hongw...@163.com> 写道：
>>>>
>>>> Hi. all.
>>>>
>>>> I got a very strange issues.
>>>>
>>>> I tried to generate dynamic check code by struts2. so, I used buffered
>>>> image and javax.imageio for a byteinputstream in my Action.
>>>>
>>>> look like the function work fine. but strange thing is: every time when I
>>>> access that dynamic check code action. system will be start a java
>>>> application “Bootstrap”
>>>>
>>>> please check the picture. also, when quit this Bootstrap java application,
>>>> and my tomcat is stop running too.
>>>>
>>>>
>>>>
>>>> would you please share with me what’s this? and why it running by
>>>> automatic?
>>>>
>>>> <屏幕快照 2015-09-24 02.13.46.png>
>>>>
>>>>
>>>>
>>>> thanks so much
>>>>
>>>>
>>>> Mike.G
>>>>
>>>
>>>
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>>
>
