关于 mysql5.0.16的连接问题.再线

我装上了个mysql5.0.16,在一个jsp页面里连接,总是提示以下错误,各位请帮忙
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Communication failure during handshake. Is there a server running on localhost:3306?
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.hh_jsp._jspService(org.apache.jsp.hh_jsp:92)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.sql.SQLException: Communication failure during handshake. Is there a server running on localhost:3306?
org.gjt.mm.mysql.MysqlIO.init(MysqlIO.java:327)
org.gjt.mm.mysql.Connection.connectionInit(Connection.java:261)
org.gjt.mm.mysql.jdbc2.Connection.connectionInit(Connection.java:89)
org.gjt.mm.mysql.Driver.connect(Driver.java:167)
java.sql.DriverManager.getConnection(Unknown Source)
java.sql.DriverManager.getConnection(Unknown Source)
org.apache.jsp.hh_jsp._jspService(org.apache.jsp.hh_jsp:58)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)