SpringMVC 2：非注解常见HandlerMapping和Controller

BeanNameUrlHandlerMapping：

这是默认的处理方式，controller配置的name属性为url

<bean id="beanNameUrlHandlerMapping" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
<bean name="/spring.do" class="controller.SpringController"></bean>

SimpleUrlHandlerMapping：

这种方式controller的<bean>中需要id属性，在配置是通过<props>可以把多个url映射到同一controller上，访问http://127.0.0.1:8080/SprintMVC/mvc2.do或者mvc1都可以放访问

<bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/mvc1.do">spring</prop>
				<prop key="/mvc2.do">spring </prop>
				<prop key="/mvc3.do"> spring</prop>
			</props>
		</property>
	</bean>
<bean id="spring" class="controller.SpringController"></bean>

ControllerClassNameHandlerMapping：

根据类名称进行截取，删除Controller后缀，将前面的名字转为小写SpringController转换后为spring，该配置的后，访问的url为http://127.0.0.1:8080/SprintMVC/spring.do

<bean id="controllerClassNameHandlerMapping" class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"></bean>
<bean class="controller.SpringController"></bean

如果多个HandlerMapping都配置时，会从上到下执行，也可以设置Mapping的优先级，使用order属性，让其从下而上执行

<bean id="beanNameUrlHandlerMapping" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">
		<property name="order" value="3"></property>
	</bean>
	<bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/mvc1.do">spring</prop>
				<prop key="/mvc2.do">spring </prop>
				<prop key="/mvc3.do"> spring</prop>
			</props>
		</property>
		<property name="order" value="2"></property>
	</bean>
	<bean id="controllerClassNameHandlerMapping" class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
		<property name="order" value="1"></property>
	</bean>

 

AbstractCommandController：

在构造方法里绑定实体类，url访问时携带参数http://127.0.0.1:8080/SprintMVC/command.do?id=1&age=15&name=zhangsan

public class CommandController extends AbstractCommandController {

	@SuppressWarnings("deprecation")
	public CommandController() {
                //绑定实体类
		super.setCommandClass(Person.class);
		super.setCommandName("person");
	}

	@Override
	protected ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception {
		Person p = (Person) command;
		System.out.println(p);
		return null;
	}
}

 为了方便，Mapping都配置为ControllerClassNameHandlerMapping