I am getting an exception in Tomcat stating the following:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
Only a type can be imported. business.User resolves to a package
An error occurred at line: 12 in the jsp file: /join_email_list.jsp
User cannot be resolved to a type
9: <body>
10: <%@ page import="business.User" %>
11: <%
12: User user = (User) request.getAttribute("user");
13: String message = (String) request.getAttribute("message");
14:
15: if (user == null)
An error occurred at line: 12 in the jsp file: /join_email_list.jsp
User cannot be resolved to a type
9: <body>
10: <%@ page import="business.User" %>
11: <%
12: User user = (User) request.getAttribute("user");
13: String message = (String) request.getAttribute("message");
14:
15: if (user == null)
An error occurred at line: 17 in the jsp file: /join_email_list.jsp
User cannot be resolved to a type
14:
15: if (user == null)
16: {
17: user = new User();
18: }
19: if (message == null)
20: {
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:439)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
A few things to point out:
First:
An error occurred at line: 6 in the generated java file
Only a type can be imported. business.User resolves to a package
This is inaccurate User is a class in the business package.
Second
User user = (User) request.getAttribute("user");
User is clearly a type, in NetBeans ctrl + space brings up all the class properties and methods.
Here is the User class:
package business;
public class User
{
private String firstName;
private String lastName;
private String emailAddress;
public User()
{
firstName = "";
lastName = "";
emailAddress = "";
}
public User(String first, String last, String email)
{
firstName = first;
lastName = last;
emailAddress = email;
}
public void setFirstName(String f)
{
firstName = f;
}
public String getFirstName()
{
return firstName;
}
public void setLastName(String l)
{
lastName = l;
}
public String getLastName()
{
return lastName;
}
public void setEmailAddress(String e)
{
emailAddress = e;
}
public String getEmailAddress()
{
return emailAddress;
}
}
How can I resolve this? It doesn’t seem as if anything is wrong. Thanks.
This kind of JSP error is misleading. This is under the covers actually a
NoClassDefFoundError.In other words, the
/WEB-INF/classes/business/User.classis missing.