javax.servlet
Class ServletException
java.lang.Object
|
+--java.lang.Throwable
|
+--java.lang.Exception
|
+--javax.servlet.ServletException
- Direct Known Subclasses:
- UnavailableException
- public class ServletException
- extends java.lang.Exception
Defines a general exception a servlet can throw when it
encounters difficulty.
- See Also:
- Serialized Form
Constructor Summary |
ServletException()
Constructs a new servlet exception. |
ServletException(java.lang.String message)
Constructs a new servlet exception with the
specified message. |
ServletException(java.lang.String message,
java.lang.Throwable rootCause)
Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation, including a description message. |
ServletException(java.lang.Throwable rootCause)
Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation. |
Method Summary |
java.lang.Throwable |
getRootCause()
Returns the exception that caused this servlet exception. |
Methods inherited from class java.lang.Throwable |
fillInStackTrace,
getLocalizedMessage,
getMessage,
printStackTrace,
printStackTrace,
printStackTrace,
toString |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
wait,
wait,
wait |
ServletException
public ServletException()
- Constructs a new servlet exception.
ServletException
public ServletException(java.lang.String message)
- Constructs a new servlet exception with the
specified message. The message can be written
to the server log and/or displayed for the user.
- Parameters:
message
- a String
specifying the text of
the exception message
ServletException
public ServletException(java.lang.String message,
java.lang.Throwable rootCause)
- Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation, including a description message.
- Parameters:
message
- a String
containing
the text of the exception messagerootCause
- the Throwable
exception
that interfered with the servlet's
normal operation, making this servlet
exception necessary
ServletException
public ServletException(java.lang.Throwable rootCause)
- Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation. The exception's message is based on the localized
message of the underlying exception.
This method calls the getLocalizedMessage
method
on the Throwable
exception to get a localized exception
message. When subclassing ServletException
,
this method can be overridden to create an exception message
designed for a specific locale.
- Parameters:
rootCause
- the Throwable
exception
that interfered with the servlet's
normal operation, making the servlet exception
necessary
getRootCause
public java.lang.Throwable getRootCause()
- Returns the exception that caused this servlet exception.
- Returns:
- the
Throwable
that caused this servlet exception