程序包 cn.taketoday.web.bind.annotation

Annotation Interface ModelAttribute

@Documented @Retention(RUNTIME) @Target({PARAMETER,METHOD}) @Reflective public @interface ModelAttribute
Annotation that binds a method parameter or method return value to a named model attribute, exposed to a web view. Supported for controller classes with @RequestMapping methods.

WARNING: Data binding can lead to security issues by exposing parts of the object graph that are not meant to be accessed or modified by external clients. Therefore the design and use of data binding should be considered carefully with regard to security. For more details, please refer to the dedicated sections on data binding for Infra Web MVC and Infra WebFlux in the reference manual.

@ModelAttribute can be used to expose command objects to a web view, using specific attribute names, by annotating corresponding parameters of an @RequestMapping method.

@ModelAttribute can also be used to expose reference data to a web view by annotating accessor methods in a controller class with @RequestMapping methods. Such accessor methods are allowed to have any arguments that @RequestMapping methods support, returning the model attribute value to expose.

Note however that reference data and all other model content are not available to web views when request processing results in an Exception since the exception could be raised at any time making the content of the model unreliable. For this reason @ExceptionHandler methods do not provide access to a Model argument.

从以下版本开始:
4.0 2022/4/8 22:50
作者:
Juergen Hoeller, Rossen Stoyanchev, Harry Yang

  • 可选元素概要

    可选元素
    修饰符和类型
    可选元素
    说明
    boolean
    binding
    Allows declaring data binding disabled directly on an @ModelAttribute method parameter or on the attribute returned from an @ModelAttribute method, both of which would prevent data binding for that attribute.
    String
    name
    The name of the model attribute to bind to.
    String
    value
    Alias for name().

  • 元素详细资料

    • value

      @AliasFor("name") String value
      Alias for name().
      默认值:
      ""

    • name

      @AliasFor("value") String name
      The name of the model attribute to bind to.

      The default model attribute name is inferred from the declared attribute type (i.e. the method parameter type or method return type), based on the non-qualified class name: e.g. "orderAddress" for class "mypackage.OrderAddress", or "orderAddressList" for "List<mypackage.OrderAddress>".

      默认值:
      ""

    • binding

      boolean binding
      Allows declaring data binding disabled directly on an @ModelAttribute method parameter or on the attribute returned from an @ModelAttribute method, both of which would prevent data binding for that attribute.

      By default this is set to true in which case data binding applies. Set this to false to disable data binding.

      默认值:
      true