org.springframework.web.bind.annotation

## Annotation Type ModelAttribute

    @Target(value={PARAMETER,METHOD})
    @Retention(value=RUNTIME)
    @Documented
    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.

Can be used to expose command objects to a web view, using specific attribute names, through annotating corresponding parameters of an `@RequestMapping` method.

Can also be used to expose reference data to a web view through 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 is 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.

Since:
  2.5
Author:
  Juergen Hoeller

### Optional Element Summary

Optional Elements
`String` `value` The name of the model attribute to bind to.

### Element Detail

#### value

    public abstract String value

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>".

Default:
  ""