org.springframework.format

## 接口 AnnotationFormatterFactory<A extends Annotation>

- 类型参数:
    `A` - the annotation type that should trigger formatting
  所有已知实现类:
    DateTimeFormatAnnotationFormatterFactory, JodaDateTimeFormatAnnotationFormatterFactory, Jsr310DateTimeFormatAnnotationFormatterFactory, Jsr354NumberFormatAnnotationFormatterFactory, NumberFormatAnnotationFormatterFactory

      public interface AnnotationFormatterFactory<A extends Annotation>

  A factory that creates formatters to format values of fields annotated with a particular `Annotation`.

  For example, a `DateTimeFormatAnnotationFormatterFactory` might create a formatter that formats `Date` values set on fields annotated with `@DateTimeFormat`.

  从以下版本开始:
    3.0
  作者:
    Keith Donald

- - ### 方法概要

    所有方法 实例方法 抽象方法
    限定符和类型 | 方法和说明
    --- | ---
    `Set<Class<?>>` | `getFieldTypes()` The types of fields that may be annotated with the <A> annotation.
    `Parser<?>` | `getParser(A annotation, Class<?> fieldType)` Get the Parser to parse a submitted value for a field of `fieldType` annotated with `annotation`.
    `Printer<?>` | `getPrinter(A annotation, Class<?> fieldType)` Get the Printer to print the value of a field of `fieldType` annotated with `annotation`.

- - ### 方法详细资料

    - #### getFieldTypes

          Set<Class<?>> getFieldTypes()

      The types of fields that may be annotated with the <A> annotation.

    - #### getPrinter

          Printer<?> getPrinter(A annotation,
                                Class<?> fieldType)

      Get the Printer to print the value of a field of `fieldType` annotated with `annotation`.

      If the type T the printer accepts is not assignable to `fieldType`, a coercion from `fieldType` to T will be attempted before the Printer is invoked.

      参数:
        `annotation` - the annotation instance
        `fieldType` - the type of field that was annotated
      返回:
        the printer

    - #### getParser

          Parser<?> getParser(A annotation,
                              Class<?> fieldType)

      Get the Parser to parse a submitted value for a field of `fieldType` annotated with `annotation`.

      If the object the parser returns is not assignable to `fieldType`, a coercion to `fieldType` will be attempted before the field is set.

      参数:
        `annotation` - the annotation instance
        `fieldType` - the type of field that was annotated
      返回:
        the parser