@RequestAttribute

与 @SessionAttribute 类似，您可以使用 @RequestAttribute 注释访问先前创建的预先存在的请求属性（例如，由 WebFilter 创建的请求属性），如下面的示例所示：

Similarly to @SessionAttribute, you can use the @RequestAttribute annotation to access pre-existing request attributes created earlier (for example, by a WebFilter), as the following example shows:

Java
@GetMapping("/")
public String handle(@RequestAttribute Client client) { 1
	// ...
}
1 Using @RequestAttribute.
Kotlin
@GetMapping("/")
fun handle(@RequestAttribute client: Client): String { (1)
	// ...
}
2 Using @RequestAttribute.