HttpSessionRequiredException (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - javax.servlet.ServletException
    - - org.springframework.web.HttpSessionRequiredException

所有已实现的接口:
Serializable
```
public class HttpSessionRequiredException
extends ServletException
```
Exception thrown when an HTTP request handler requires a pre-existing session.
从以下版本开始:
2.0
作者:
Juergen Hoeller
另请参阅:
序列化表格

构造器概要

构造器
构造器	说明
`HttpSessionRequiredException(String msg)`	Create a new HttpSessionRequiredException.
`HttpSessionRequiredException(String msg, String expectedAttribute)`	Create a new HttpSessionRequiredException.

方法概要
所有方法实例方法具体方法
修饰符和类型方法说明
String getExpectedAttribute()
Return the name of the expected session attribute, if any.
- 从类继承的方法 javax.servlet.ServletException
  getRootCause
- 从类继承的方法 java.lang.Throwable
  addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
- 从类继承的方法 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - HttpSessionRequiredException
```
public HttpSessionRequiredException(String msg)
```
    Create a new HttpSessionRequiredException.
    参数:
    msg - the detail message
  - HttpSessionRequiredException
```
public HttpSessionRequiredException(String msg,
                                    String expectedAttribute)
```
    Create a new HttpSessionRequiredException.
    参数:
    msg - the detail message
    expectedAttribute - the name of the expected session attribute
    从以下版本开始:
    4.3
- 方法详细资料
  - getExpectedAttribute
```
public String getExpectedAttribute()
```
    Return the name of the expected session attribute, if any.
    从以下版本开始:
    4.3