java.lang.Object
- org.springframework.context.support.ApplicationObjectSupport
- - org.springframework.web.portlet.handler.AbstractHandlerMapping
  - - org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping<String>
    - - org.springframework.web.portlet.handler.ParameterHandlerMapping

所有已实现的接口:
Aware, ApplicationContextAware, Ordered, HandlerMapping
```
public class ParameterHandlerMapping
extends AbstractMapBasedHandlerMapping<String>
```
Implementation of the HandlerMapping to map from a request parameter to request handler beans.
The default name of the parameter is "action", but can be changed using setParameterName().
The bean configuration for this mapping will look somthing like this:
```
 <bean id="parameterHandlerMapping" class="org.springframework.web.portlet.handler.ParameterHandlerMapping">
   <property name="parameterMap">
     <map>
             <entry key="add"><ref bean="addItemHandler"/></entry>
       <entry key="edit"><ref bean="editItemHandler"/></entry>
       <entry key="delete"><ref bean="deleteItemHandler"/></entry>
     </map>
   </property>
 </bean>
```
Thanks to Rainer Schmitz for suggesting this mapping strategy!
从以下版本开始:
2.0
作者:
John A. Lewis, Juergen Hoeller
另请参阅:
ParameterMappingInterceptor

嵌套类概要
- 从类继承的嵌套类/接口 org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping
  AbstractMapBasedHandlerMapping.PortletRequestMappingPredicate

字段概要
字段
修饰符和类型字段说明
static String DEFAULT_PARAMETER_NAME
Default request parameter name to use for mapping to handlers: "action".
- 从类继承的字段 org.springframework.context.support.ApplicationObjectSupport
  logger
- 从接口继承的字段 org.springframework.core.Ordered
  HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

构造器概要
构造器
构造器说明
ParameterHandlerMapping()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`protected String`	`getLookupKey(PortletRequest request)`	Uses the value of the specified parameter as lookup key.
`void`	`initApplicationContext()`	Calls the `registerHandlers` method in addition to the superclass's initialization.
`void`	`setParameterMap(Map<String,?> parameterMap)`	Set a Map with parameters as keys and handler beans or bean names as values.
`void`	`setParameterName(String parameterName)`	Set the name of the parameter used for mapping to handlers.

从类继承的方法 org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping
getHandlerInternal, registerHandler, registerHandler, registerHandlers, setLazyInitHandlers

从类继承的方法 org.springframework.web.portlet.handler.AbstractHandlerMapping
adaptInterceptor, extendInterceptors, getAdaptedInterceptors, getDefaultHandler, getHandler, getHandlerExecutionChain, getOrder, initInterceptors, setApplyWebRequestInterceptorsToRenderPhaseOnly, setDefaultHandler, setInterceptors, setOrder

从类继承的方法 org.springframework.context.support.ApplicationObjectSupport
getApplicationContext, getMessageSourceAccessor, initApplicationContext, isContextRequired, requiredContextClass, setApplicationContext

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - DEFAULT_PARAMETER_NAME
```
public static final String DEFAULT_PARAMETER_NAME
```
    Default request parameter name to use for mapping to handlers: "action".
    另请参阅:
    常量字段值
- 构造器详细资料
  - ParameterHandlerMapping
```
public ParameterHandlerMapping()
```
- 方法详细资料
  - setParameterName
```
public void setParameterName(String parameterName)
```
    Set the name of the parameter used for mapping to handlers.
    Default is "action".
  - setParameterMap
```
public void setParameterMap(Map<String,?> parameterMap)
```
    Set a Map with parameters as keys and handler beans or bean names as values. Convenient for population with bean references.
    参数:
    parameterMap - map with parameters as keys and beans as values
  - initApplicationContext
```
public void initApplicationContext()
                            throws BeansException
```
    Calls the registerHandlers method in addition to the superclass's initialization.
    覆盖:
    initApplicationContext 在类中 AbstractHandlerMapping
    抛出:
    ApplicationContextException - in case of initialization errors
    BeansException - if thrown by ApplicationContext methods
    另请参阅:
    AbstractMapBasedHandlerMapping.registerHandlers(java.util.Map<K, ?>)
  - getLookupKey
```
protected String getLookupKey(PortletRequest request)
                       throws Exception
```
    Uses the value of the specified parameter as lookup key.
    指定者:
    getLookupKey 在类中 AbstractMapBasedHandlerMapping<String>
    参数:
    request - current portlet request
    返回:
    the lookup key (never null)
    抛出:
    Exception - if key computation failed
    另请参阅:
    setParameterName(java.lang.String)

类 ParameterHandlerMapping

嵌套类概要

从类继承的嵌套类/接口 org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping

字段概要

从类继承的字段 org.springframework.context.support.ApplicationObjectSupport

从接口继承的字段 org.springframework.core.Ordered

构造器概要

方法概要

从类继承的方法 org.springframework.web.portlet.handler.AbstractMapBasedHandlerMapping

从类继承的方法 org.springframework.web.portlet.handler.AbstractHandlerMapping

从类继承的方法 org.springframework.context.support.ApplicationObjectSupport

从类继承的方法 java.lang.Object

字段详细资料

DEFAULT_PARAMETER_NAME

构造器详细资料

ParameterHandlerMapping

方法详细资料

setParameterName

setParameterMap

initApplicationContext

getLookupKey