`@CookieValue`

可以使用 @CookieValue 标注，将 HTTP cookie 的值绑定到 Controller 中的方法参数。

You can use the @CookieValue annotation to bind the value of an HTTP cookie to a method argument in a controller.

考虑带有以下 cookie 的请求：

Consider a request with the following cookie:

JSESSIONID=415A4AC178C59DACE0B2C9CA727CDD84

以下示例说明了如何获取 cookie 值：

The following example shows how to get the cookie value:

Java

@GetMapping("/demo")
public void handle(@CookieValue("JSESSIONID") String cookie) { 1
	//...
}

1	Get the value of the `JSESSIONID` cookie. Kotlin `@GetMapping("/demo") fun handle(@CookieValue("JSESSIONID") cookie: String) { (1) //... }`
2	Get the value of the `JSESSIONID` cookie.

如果目标方法参数类型不是 String，则自动应用类型转换。参见 Type Conversion。

If the target method parameter type is not String, type conversion is applied automatically. See Type Conversion.