ContentTypeResolver (Spring Framework 4.3.30.RELEASE API)

所有已知实现类:
DefaultContentTypeResolver
```
public interface ContentTypeResolver
```
Resolve the content type for a message.
从以下版本开始:
4.0
作者:
Rossen Stoyanchev

- 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
  MimeType resolve(MessageHeaders headers)
  Determine the MimeType of a message from the given MessageHeaders.

- 方法详细资料
  - resolve
```
MimeType resolve(MessageHeaders headers)
          throws InvalidMimeTypeException
```
    Determine the MimeType of a message from the given MessageHeaders.
    参数:
    headers - the headers to use for the resolution
    返回:
    the resolved MimeType, or null if none found
    抛出:
    InvalidMimeTypeException - if the content type is a String that cannot be parsed
    IllegalArgumentException - if there is a content type but its type is unknown