Controller (Spring Framework 4.3.30.RELEASE API)

```
@Target(TYPE)
@Retention(RUNTIME)
@Documented
@Component
public @interface Controller
```
Indicates that an annotated class is a "Controller" (e.g. a web controller).
This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning. It is typically used in combination with annotated handler methods based on the RequestMapping annotation.
从以下版本开始:
2.5
作者:
Arjen Poutsma, Juergen Hoeller
另请参阅:
Component, RequestMapping, ClassPathBeanDefinitionScanner

- 可选元素概要
  可选元素
  修饰符和类型可选元素说明
  String value
  The value may indicate a suggestion for a logical component name, to be turned into a Spring bean in case of an autodetected component.

- 元素详细资料
  - value
```
String value
```
    The value may indicate a suggestion for a logical component name, to be turned into a Spring bean in case of an autodetected component.
    返回:
    the suggested component name, if any (or empty String otherwise)
    默认值:
    ""