SpringMVC 二：常见HandlerMapping和Controller

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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>

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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>

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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

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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

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	<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>

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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;	}}

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

?SimpleFormController：

跟对get和post请求处理方式不同

?只有post提交，才会进入doSubmitAction()中

public class FormController extends SimpleFormController {	public FormController() {		this.setCommandClass(Person.class);		this.setCommandName("person");	}	protected void doSubmitAction(Object command) throws Exception {		Person p = (Person) command;		System.out.println(p);	}}

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	<bean id="simpleForm" class="controller.FormController">		<property name="formView" value="person"></property>		<property name="successView" value="springMVC"></property>	</bean>

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WizardFormController：

多个页面，和分页类似

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