utf 8-mysql, jsp, hibernate, utf-8 is not supported

utf 8mysqljsp

java.sql.SQLException: Unsupported character encoding ' UTF-8, spring female eat, hibernate, spring project, simply check the data from the database in the background, jump to jsp display, report the above one does not support utf-8 Error, after looking at the jsp page, the database is set to utf-8. I used it very well before, but this error was reported just to add a calendar control when inserting. Later, I deleted the content about the calendar control. Now I not only insert The data is not working, even a simple query of the data is not working. Restarting myeclipse does not work. What may be the reason?

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http://nealcai.iteye.com/blog/1488962