Hi,
This problem is solved just now although I cannot tell why it casued and solved. I replace the jai related jars in C:\Program Files\Java\jdk1.6.0_24\jre\lib\ext folder and C:\Program Files\Java\jre6\lib\ext folder by the jai related jars in geoserver, such as E:\Program Files\Servers\apache-tomcat-6.0.18\webapps\geoserver\WEB-INF\lib
BTW, the jai related jars are jai_codec-1.1.3.jar, jai_core-1.1.3.jar and jai_imageio-1.1.jar
I think may be it is not nessary to do all of this, can anybody give more in-depth information on this?
With Regards,
Ju Bin
2011-3-21