Spring mvc (三) [继承SimpleFormController配合formbean区别get和post请求]

通过继承SimpleFormController来重写onsubmit和referenceData方法这里有两个方法。可以限制get和post请求我们的url是http://localhost:8080/springmvc/simpform.do顺序则为：http://localhost:8080/springmvc/simpform.do    get方法  （默认传递回一个view对象是截取请求中带的simpform。然后配合配置的viewresolver前缀和后缀。转移到/WEB-INF/pages/simpform.jsp）然后再次发送post方法传递表单可以到达onSubmit方法配置文件：1、通过类名称匹配的配置<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />2、配置controller bean和viewresolver<bean id="simpleform" class="cn.zhang.mvc.SimpFormController"><property name="commandClass"><value>com.zhang.model.LoginInfo</value></property></bean>Viewresolver：<!--配置一个viewResolver来处理返回的页面,配置前置和后置--><bean id="viewresolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix"><value>/WEB-INF/pages/</value></property><property name="suffix"><value>.jsp</value></property></bean>3、SimpFormController的编码：下面标示的很清楚。两个方法分别可以传递对象和视图。很明显。public class SimpFormController extends SimpleFormController{protected ModelAndView onSubmit(Object command, BindException errors)throws Exception {LoginInfo logininfo = (LoginInfo) command;//post请求到达System.out.println("onSubmit method"+logininfo);return new ModelAndView("success");}@Overrideprotected Map referenceData(HttpServletRequest request) throws Exception {//get请求到达System.out.println("referenceData method");return null;}}