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@Target(value=PARAMETER) @Retention(value=RUNTIME) @Documented public @interface RequestParam
Annotation which indicates that a method parameter should be bound
 to a web request parameter. Supported for RequestMapping
 annotated handler methods in Servlet and Portlet environments.
RequestMapping, 
AnnotationMethodHandlerAdapter, 
AnnotationMethodHandlerAdapter| Optional Element Summary | |
|---|---|
|  boolean | requiredWhether the parameter is required. | 
|  String | valueThe request parameter to bind to. | 
public abstract String value
public abstract boolean required
Default is  
true, leading to an exception thrown in case
 of the parameter missing in the request. Switch this to false
 if you prefer a null in case of the parameter missing.
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