javax.servlet
类 ServletException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          javax.servlet.ServletException

所有已实现的接口：

Serializable

直接已知子类：

JasperException, UnavailableException

public class ServletException
extends Exception

Defines a general exception a servlet can throw when it encounters difficulty.

作者：

Various

另请参见：

序列化表格

构造方法摘要

ServletException()
Constructs a new servlet exception.

ServletException(String message)
Constructs a new servlet exception with the specified message.

ServletException(String message, 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(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.

方法摘要

Throwable

getRootCause() Returns the exception that caused this servlet exception.

从类 java.lang.Throwable 继承的方法

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造方法详细信息

ServletException

public ServletException()

Constructs a new servlet exception.

ServletException

public ServletException(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.

参数：

message - a String specifying the text of the exception message

ServletException

public ServletException(String message,
                        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.

参数：

message - a String containing the text of the exception message

rootCause - the Throwable exception that interfered with the servlet's normal operation, making this servlet exception necessary

ServletException

public ServletException(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.

参数：

rootCause - the Throwable exception that interfered with the servlet's normal operation, making the servlet exception necessary

方法详细信息

getRootCause

public Throwable getRootCause()

Returns the exception that caused this servlet exception.

返回：

the Throwable that caused this servlet exception