REST风格的Web服务在Netbeans 6.9中使用Mysql测试错误

您好我已经在使用mysql的NetBeans 6.9中创建了一个REST风格的Web服务。我遵循本教程从netbeans：http://netbeans.org/kb/docs/websvc/rest.html REST风格的Web服务在Netbeans 6.9中使用Mysql测试错误

但是，当我试图测试服务，我在浏览器中得到以下错误。任何人都可以请帮助如何解决这个问题。

在此先感谢。

HTTP Status 500 - 

-------------------------------------------------------------------------------- 

type Exception report 

message 

descriptionThe server encountered an internal error() that prevented it from fulfilling this request. 

exception 
javax.servlet.ServletException: javax.persistence.PersistenceException: Exception  [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null 
Error Code: 0 

root cause 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException 
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null 
Error Code: 0 

root cause 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.0.1.v20100213-r6600): org.eclipse.persistence.exceptions.DatabaseException 
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: null 
Error Code: 0 

root cause 
java.sql.SQLException: Error in allocating a connection. Cause: null

来源

2012-04-01 blackRider

我有完全相同的问题。你能看到这个问题： http://stackoverflow.com/questions/10936746/mysql-and-glassfish-error-in-allocating-a-connection 由于我在wamp上使用mysql，我已经给出了管理员属性中的以下内容：管理工具的路径/ URL：http：// localhost/phpmyadmin/ 启动命令路径：C：\ wamp \ bin \ mysql \ mysql5.5.24 \ bin \ mysqld.exe 停止命令的路径：C：\ wamp \ bin \ mysql \ mysql5.5.24 \ bin \ mysqld.exe 参数：-u root stop 它仍然不起作用。你能否提供指针@meraz？在此先感谢！ – JazJ 2012-06-07 22:14:51