java.lang.Object
- org.springframework.web.method.HandlerMethod

Direct Known Subclasses:
InvocableHandlerMethod
```
public class HandlerMethod
extends Object
```
Encapsulates information about a handler method consisting of a method and a bean. Provides convenient access to method parameters, the method return value, method annotations, etc.
The class may be created with a bean instance or with a bean name (e.g. lazy-init bean, prototype bean). Use createWithResolvedBean() to obtain a HandlerMethod instance with a bean instance resolved through the associated BeanFactory.
Since:
3.1
Author:
Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller, Sam Brannen

Nested Class Summary
Nested Classes
Modifier and Type Class Description
protected class HandlerMethod.HandlerMethodParameter
A MethodParameter with HandlerMethod-specific behavior.

Field Summary
Fields
Modifier and Type Field Description
protected Log logger
Logger that is available to subclasses

Constructor Summary

Constructors
Modifier	Constructor	Description
	`HandlerMethod(Object bean, Method method)`	Create an instance from a bean instance and a method.
	`HandlerMethod(Object bean, String methodName, Class<?>... parameterTypes)`	Create an instance from a bean instance, method name, and parameter types.
	`HandlerMethod(String beanName, BeanFactory beanFactory, Method method)`	Create an instance from a bean name, a method, and a `BeanFactory`.
`protected`	`HandlerMethod(HandlerMethod handlerMethod)`	Copy constructor for use in subclasses.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`HandlerMethod`	`createWithResolvedBean()`	If the provided instance contains a bean name rather than an object instance, the bean name is resolved before a `HandlerMethod` is created and returned.
`boolean`	`equals(Object other)`
`Object`	`getBean()`	Return the bean for this handler method.
`Class<?>`	`getBeanType()`	This method returns the type of the handler for this handler method.
`protected Method`	`getBridgedMethod()`	If the bean method is a bridge method, this method returns the bridged (user-defined) method.
`Method`	`getMethod()`	Return the method for this handler method.
`<A extends Annotation> A`	`getMethodAnnotation(Class<A> annotationType)`	Return a single annotation on the underlying method traversing its super methods if no annotation can be found on the given method itself.
`MethodParameter[]`	`getMethodParameters()`	Return the method parameters for this handler method.
`HandlerMethod`	`getResolvedFromHandlerMethod()`	Return the HandlerMethod from which this HandlerMethod instance was resolved via `createWithResolvedBean()`.
`protected HttpStatus`	`getResponseStatus()`	Return the specified response status, if any.
`protected String`	`getResponseStatusReason()`	Return the associated response status reason, if any.
`MethodParameter`	`getReturnType()`	Return the HandlerMethod return type.
`MethodParameter`	`getReturnValueType(Object returnValue)`	Return the actual return value type.
`String`	`getShortLogMessage()`	Return a short representation of this handler method for log message purposes.
`int`	`hashCode()`
`<A extends Annotation> boolean`	`hasMethodAnnotation(Class<A> annotationType)`	Return whether the parameter is declared with the given annotation type.
`boolean`	`isVoid()`	Return `true` if the method return type is void, `false` otherwise.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - logger
```
protected final Log logger
```
    Logger that is available to subclasses
- Constructor Detail
  - HandlerMethod
```
public HandlerMethod(Object bean,
                     Method method)
```
    Create an instance from a bean instance and a method.
  - HandlerMethod
```
public HandlerMethod(Object bean,
                     String methodName,
                     Class<?>... parameterTypes)
              throws NoSuchMethodException
```
    Create an instance from a bean instance, method name, and parameter types.
    Throws:
    NoSuchMethodException - when the method cannot be found
  - HandlerMethod
```
public HandlerMethod(String beanName,
                     BeanFactory beanFactory,
                     Method method)
```
    Create an instance from a bean name, a method, and a BeanFactory. The method createWithResolvedBean() may be used later to re-create the HandlerMethod with an initialized bean.
  - HandlerMethod
```
protected HandlerMethod(HandlerMethod handlerMethod)
```
    Copy constructor for use in subclasses.
- Method Detail
  - getBean
```
public Object getBean()
```
    Return the bean for this handler method.
  - getMethod
```
public Method getMethod()
```
    Return the method for this handler method.
  - getBeanType
```
public Class<?> getBeanType()
```
    This method returns the type of the handler for this handler method.
    Note that if the bean type is a CGLIB-generated class, the original user-defined class is returned.
  - getBridgedMethod
```
protected Method getBridgedMethod()
```
    If the bean method is a bridge method, this method returns the bridged (user-defined) method. Otherwise it returns the same method as getMethod().
  - getMethodParameters
```
public MethodParameter[] getMethodParameters()
```
    Return the method parameters for this handler method.
  - getResponseStatus
```
protected HttpStatus getResponseStatus()
```
    Return the specified response status, if any.
    Since:
    4.3.8
    See Also:
    ResponseStatus.code()
  - getResponseStatusReason
```
protected String getResponseStatusReason()
```
    Return the associated response status reason, if any.
    Since:
    4.3.8
    See Also:
    ResponseStatus.reason()
  - getReturnType
```
public MethodParameter getReturnType()
```
    Return the HandlerMethod return type.
  - getReturnValueType
```
public MethodParameter getReturnValueType(Object returnValue)
```
    Return the actual return value type.
  - isVoid
```
public boolean isVoid()
```
    Return true if the method return type is void, false otherwise.
  - getMethodAnnotation
```
public <A extends Annotation> A getMethodAnnotation(Class<A> annotationType)
```
    Return a single annotation on the underlying method traversing its super methods if no annotation can be found on the given method itself.
    Also supports merged composed annotations with attribute overrides as of Spring Framework 4.2.2.
    Parameters:
    annotationType - the type of annotation to introspect the method for
    Returns:
    the annotation, or null if none found
    See Also:
    AnnotatedElementUtils.findMergedAnnotation(java.lang.reflect.AnnotatedElement, java.lang.Class<A>)
  - hasMethodAnnotation
```
public <A extends Annotation> boolean hasMethodAnnotation(Class<A> annotationType)
```
    Return whether the parameter is declared with the given annotation type.
    Parameters:
    annotationType - the annotation type to look for
    Since:
    4.3
    See Also:
    AnnotatedElementUtils.hasAnnotation(java.lang.reflect.AnnotatedElement, java.lang.Class<? extends java.lang.annotation.Annotation>)
  - getResolvedFromHandlerMethod
```
public HandlerMethod getResolvedFromHandlerMethod()
```
    Return the HandlerMethod from which this HandlerMethod instance was resolved via createWithResolvedBean().
  - createWithResolvedBean
```
public HandlerMethod createWithResolvedBean()
```
    If the provided instance contains a bean name rather than an object instance, the bean name is resolved before a HandlerMethod is created and returned.
  - getShortLogMessage
```
public String getShortLogMessage()
```
    Return a short representation of this handler method for log message purposes.
    Since:
    4.3
  - equals
```
public boolean equals(Object other)
```
    Overrides:
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    toString in class Object

Class HandlerMethod

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

HandlerMethod

HandlerMethod

HandlerMethod

HandlerMethod

Method Detail

getBean

getMethod

getBeanType

getBridgedMethod

getMethodParameters

getResponseStatus

getResponseStatusReason

getReturnType

getReturnValueType

isVoid

getMethodAnnotation

hasMethodAnnotation

getResolvedFromHandlerMethod

createWithResolvedBean

getShortLogMessage

equals

hashCode

toString