ConfigurationProperties (Spring Boot API)

```
@Target({TYPE,METHOD})
@Retention(RUNTIME)
@Documented
public @interface ConfigurationProperties
```
Annotation for externalized configuration. Add this to a class definition or a @Bean method in a @Configuration class if you want to bind and validate some external Properties (e.g. from a .properties file).
Note that contrary to @Value, SpEL expressions are not evaluated since property values are externalized.
另请参阅:
ConfigurationPropertiesBindingPostProcessor, EnableConfigurationProperties

可选元素概要

可选元素
修饰符和类型	可选元素	说明
`boolean`	`ignoreInvalidFields`	Flag to indicate that when binding to this object invalid fields should be ignored.
`boolean`	`ignoreUnknownFields`	Flag to indicate that when binding to this object unknown fields should be ignored.
`String`	`prefix`	The name prefix of the properties that are valid to bind to this object.
`String`	`value`	The name prefix of the properties that are valid to bind to this object.

- 元素详细资料
  - value
```
@AliasFor("prefix")
String value
```
    The name prefix of the properties that are valid to bind to this object. Synonym for prefix(). A valid prefix is defined by one or more words separated with dots (e.g. "acme.system.feature").
    返回:
    the name prefix of the properties to bind
    默认值:
    ""
- - prefix
```
@AliasFor("value")
String prefix
```
    The name prefix of the properties that are valid to bind to this object. Synonym for value(). A valid prefix is defined by one or more words separated with dots (e.g. "acme.system.feature").
    返回:
    the name prefix of the properties to bind
    默认值:
    ""
- - ignoreInvalidFields
```
boolean ignoreInvalidFields
```
    Flag to indicate that when binding to this object invalid fields should be ignored. Invalid means invalid according to the binder that is used, and usually this means fields of the wrong type (or that cannot be coerced into the correct type).
    返回:
    the flag value (default false)
    默认值:
    false
- - ignoreUnknownFields
```
boolean ignoreUnknownFields
```
    Flag to indicate that when binding to this object unknown fields should be ignored. An unknown field could be a sign of a mistake in the Properties.
    返回:
    the flag value (default true)
    默认值:
    true