ConcurrentAccessException (Apache Shiro :: Core 1.7.1 API)乐学网一站式学习平台

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - org.apache.shiro.ShiroException
      - org.apache.shiro.authc.AuthenticationException
        
        org.apache.shiro.authc.AccountException
        
        org.apache.shiro.authc.ConcurrentAccessException

All Implemented Interfaces:

Serializable
```
public class ConcurrentAccessException
extends AccountException
```
Thrown when an authentication attempt has been received for an account that has already been authenticated (i.e. logged-in), and the system is configured to prevent such concurrent access.
This is useful when an application must ensure that only one person is logged-in to a single account at any given time.
Sometimes account names and passwords are lazily given away to many people for easy access to a system. Such behavior is undesirable in systems where users are accountable for their actions, such as in government applications, or when licensing agreements must be maintained, such as those which only allow 1 user per paid license.
By disallowing concurrent access, such systems can ensure that each authenticated session corresponds to one and only one user at any given time.

Since:

0.1

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`ConcurrentAccessException()`	Creates a new ConcurrentAccessException.
`ConcurrentAccessException(String message)`	Constructs a new ConcurrentAccessException.
`ConcurrentAccessException(String message, Throwable cause)`	Constructs a new ConcurrentAccessException.
`ConcurrentAccessException(Throwable cause)`	Constructs a new ConcurrentAccessException.

Method Summary
- Methods inherited from class java.lang.Throwable
  addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ConcurrentAccessException
```
public ConcurrentAccessException()
```
    Creates a new ConcurrentAccessException.
  - ConcurrentAccessException
```
public ConcurrentAccessException(String message)
```
    Constructs a new ConcurrentAccessException.
    
    Parameters:
    
    message - the reason for the exception
  - ConcurrentAccessException
```
public ConcurrentAccessException(Throwable cause)
```
    Constructs a new ConcurrentAccessException.
    
    Parameters:
    
    cause - the underlying Throwable that caused this exception to be thrown.
  - ConcurrentAccessException
```
public ConcurrentAccessException(String message,
                                 Throwable cause)
```
    Constructs a new ConcurrentAccessException.
    
    Parameters:
    
    message - the reason for the exception
    
    cause - the underlying Throwable that caused this exception to be thrown.