Delimiter (Spring Boot API)

```
@Documented
@Retention(RUNTIME)
@Target({METHOD,FIELD,PARAMETER,ANNOTATION_TYPE})
public @interface Delimiter
```
Declares a field or method parameter should be converted to collection using the specified delimiter.
从以下版本开始:
2.0.0

- 字段概要
  字段
  修饰符和类型字段说明
  static String NONE
  A delimiter value used to indicate that no delimiter is required and the result should be a single element containing the entire string.
- 必需元素概要
  所需元素
  修饰符和类型必需的元素说明
  String value
  The delimiter to use or NONE if the entire contents should be treated as a single element.

- 字段详细资料
  - NONE
```
static final String NONE
```
    A delimiter value used to indicate that no delimiter is required and the result should be a single element containing the entire string.
- 元素详细资料
  - value
```
String value
```
    The delimiter to use or NONE if the entire contents should be treated as a single element.
    返回:
    the delimiter