Spingmvc中的HandlerMapping负责解析请求URL，对应到Handler进行处理（这里的Handler一般为Controller里的一个方法method，也可以为servlet或者Controller等）。
HandlerMapping有三种比较常见
1. BeanNameUrlHandlerMapping 根据bean标签的名称找到对应的Controller类
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean> <bean name="/my.do" class="com.zhiyou100.hhz.controller.MyController2"></bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/view/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
2. SimpleUrlHandlerMapping 根据bean的id查找对应的Controller类。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <props> <prop key="/a.do">my1</prop> <prop key="/b.do">my2</prop> </props> </property> <bean id="/my1" class="com.zhiyou100.hhz.controller.MyController1"></bean> <bean id="/my2" class="com.zhiyou100.hhz.controller.MyController2"></bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/view/"/> <property name="suffix" value=".jsp"/> </bean> </beans>
3. ControllerClassNameHandlerMapping 根据controller类的名字找到对应的Controller。
注意除了后缀用Controller时首字C为大写，其他都为小写
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"></bean> <bean class="com.zhiyou100.hhz.controller.MyController1"></bean> <bean class="com.zhiyou100.hhz.controller.MyController2"></bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/view/"/> <property name="suffix" value=".jsp"/> </bean> </beans>