RequestAttribute (Spring Framework 5.2.12.RELEASE API)

```
@Target(PARAMETER)
@Retention(RUNTIME)
@Documented
public @interface RequestAttribute
```
Annotation to bind a method parameter to a request attribute.
The main motivation is to provide convenient access to request attributes from a controller method with an optional/required check and a cast to the target method parameter type.
Since:
4.3
Author:
Rossen Stoyanchev
See Also:
RequestMapping, SessionAttribute

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`String`	`name`	The name of the request attribute to bind to.
`boolean`	`required`	Whether the request attribute is required.
`String`	`value`	Alias for `name()`.

- Element Detail
  - value
```
@AliasFor("name")
String value
```
    Alias for name().
    Default:
    ""
- - name
```
@AliasFor("value")
String name
```
    The name of the request attribute to bind to.
    The default name is inferred from the method parameter name.
    Default:
    ""
- - required
```
boolean required
```
    Whether the request attribute is required.
    Defaults to true, leading to an exception being thrown if the attribute is missing. Switch this to false if you prefer a null or Java 8 java.util.Optional if the attribute doesn't exist.
    Default:
    true