ProfileValueSource (Spring Framework 4.3.30.RELEASE API)

所有已知实现类:
SystemProfileValueSource
```
public interface ProfileValueSource
```
Strategy interface for retrieving profile values for a given testing environment.
Concrete implementations must provide a public no-args constructor.
Spring provides the following out-of-the-box implementations:
- SystemProfileValueSource
从以下版本开始:
2.0
作者:
Rod Johnson, Sam Brannen
另请参阅:
ProfileValueSourceConfiguration, IfProfileValue, ProfileValueUtils

- 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
  String get(String key)
  Get the profile value indicated by the specified key.

- 方法详细资料
  - get
```
String get(String key)
```
    Get the profile value indicated by the specified key.
    参数:
    key - the name of the profile value
    返回:
    the String value of the profile value, or null if there is no profile value with that key