SecurityContext (Spring Boot API)

```
public interface SecurityContext
```
Security context in which an endpoint is being invoked.
从以下版本开始:
2.0.0

字段概要
字段
修饰符和类型字段说明
static SecurityContext NONE
Empty security context.

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`Principal`	`getPrincipal()`	Return the currently authenticated `Principal` or `null`.
`boolean`	`isUserInRole(String role)`	Returns `true` if the currently authenticated user is in the given `role`, or false otherwise.

- 字段详细资料
  - NONE
```
static final SecurityContext NONE
```
    Empty security context.
- 方法详细资料
  - getPrincipal
```
Principal getPrincipal()
```
    Return the currently authenticated Principal or null.
    返回:
    the principal or null
  - isUserInRole
```
boolean isUserInRole(String role)
```
    Returns true if the currently authenticated user is in the given role, or false otherwise.
    参数:
    role - name of the role
    返回:
    true if the user is in the given role