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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=23336 Error including Hibernate libraries on JSP page Summary: Error including Hibernate libraries on JSP page Product: Tomcat 4 Version: 4.1.18 Platform: PC URL: http://tonib.homeip.net:8080/jgroups/index-error.jsp OS/Version: Linux Status: NEW Severity: Normal Priority: Other Component: Servlet & JSP API AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] I use Linux Mandrake 9.2, with Sun JDK 1.4.1. Hibernate is a open source persistence layer (http://hibernate.bluemars.net/), and I want to use it on my webapp. Then, I have the following line to import the Hibernate libraries at my JSP page : <%@ page import = "net.sf.hibernate.* " %> Also, I have the following line, to load a bean of my application : <jsp:useBean id="userSession" scope="session" class="jgroups.UserSession" /> But, there is the following problem. When Tomcat compiles the JSP, give me the following message : Generated servlet error: [javac] Compiling 1 source file /usr/local/lib/jakarta-tomcat-4.1.18-LE-jdk14/work/Standalone/localhost/jgroups/menu_jsp.java:60: reference to InstantiationException is ambiguous, both class net.sf.hibernate.InstantiationException in net.sf.hibernate and class java.lang.InstantiationException in java.lang match throw new InstantiationException(exc.getMessage()); I see the .java generated for the JSP page, and contains the following code : jgroups.UserSession userSession = null; synchronized (session) { userSession = (jgroups.UserSession) pageContext.getAttribute("userSession", PageContext.SESSION_SCOPE); if (userSession == null){ try { userSession = (jgroups.UserSession) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "jgroups.UserSession"); } catch (ClassNotFoundException exc) { throw new InstantiationException(exc.getMessage()); } catch (Exception exc) { throw new ServletException("Cannot create bean of class " + "jgroups.UserSession", exc); } pageContext.setAttribute("userSession", userSession, PageContext.SESSION_SCOPE); } } The problem is that there is a InstantiationException into the Hibernate package and into the Java standard library, and the compiler dont know what must to use. The solution is change the generated code "new InstantiationException(exc.getMessage());" to "new java.lang.InstantiationException(exc.getMessage());". I think all the JSP generated code must be fully package qualified to avoid these kind of problems. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
