I am a new baby jasperReport. I have a question :
What' different JasperReport Server Pro and JasperReport Server Free ?
Here is a chart that shows the difference between the editions: http://www.jaspersoft.com/editions
The community edition provides a repository and the related security to enable self-service report execution and scheduling under the AGPL v3 license, which allows you to use it for free for your own use but does not allow it to be included as part of a commercial product or SaaS application.
The commercial edition provides additional features such as ad hoc report creation, dashboard design, a semantic data abstraction layer with row and column level data security, auditing capabilities, multi-tenancy, etc. all under a commercial license to allow use and distribution within a commercial product.