Re: what's the Bootstrap when I use "stream" result type for a picture output

[Mike Guo]

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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