AsyncRequestCallback (Spring Framework 4.3.30.RELEASE API)

```
public interface AsyncRequestCallback
```
Callback interface for code that operates on an AsyncClientHttpRequest. Allows to manipulate the request headers, and write to the request body.
Used internally by the AsyncRestTemplate, but also useful for application code.
从以下版本开始:
4.0
作者:
Arjen Poutsma
另请参阅:
AsyncRestTemplate.execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.AsyncRequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...)

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
`void`	`doWithRequest(AsyncClientHttpRequest request)`	Gets called by `AsyncRestTemplate.execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.AsyncRequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...)` with an opened `ClientHttpRequest`.

- 方法详细资料
  - doWithRequest
```
void doWithRequest(AsyncClientHttpRequest request)
            throws IOException
```
    Gets called by AsyncRestTemplate.execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.AsyncRequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...) with an opened ClientHttpRequest. Does not need to care about closing the request or about handling errors: this will all be handled by the RestTemplate.
    参数:
    request - the active HTTP request
    抛出:
    IOException - in case of I/O errors