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http://issues.apache.org/bugzilla/show_bug.cgi?id=38673 Summary: The Web Application classloader does not work as stated in the documentation Product: Tomcat 5 Version: 5.5.14 Platform: All OS/Version: Windows NT Status: NEW Severity: normal Priority: P2 Component: Catalina AssignedTo: tomcat-dev@jakarta.apache.org ReportedBy: [EMAIL PROTECTED] The documentation says that the Web Application classloader delegates the loading of classes in the javax.* packages to its parent first. Furthermore, it is said that "any JAR containing Servlet API classes will be ignored by the [Web Application] classloader". Neither statements are true in practice. The problem can be easily reproduced: 1) Create a Web application with a JAR file containing a different version of the JSP specifications classes then the one Tomcat uses; 2) Explicitely load a class from the javax.servlet.jsp.* package inside the contextInitialized method of a ServletContextListener using the Web Application classloader and its parent; 3) Compare the classes that are returned. An example is shown below. // This returns the Web Application ClassLoader (the one used // to load the implementation of the ServletContextListener // interface). ClassLoader web = getClass().getClassLoader(); // This returns the parent ClassLoader to which loading classes // from the javax.* package should be delegated. ClassLoader parent = web.getParent(); // Both classes should be the same since web should delegate its // loading to parent. Class c1 = web.loadClass("javax.servlet.jsp.el.ELException"); Class c2 = web.loadClass("javax.servlet.jsp.el.ELException"); System.out.println(c1 == c2 ? "As expected!" : "BUG!"); -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
