[英]Spring MVC request mapping not working
I want to create simple hello world application with one controller. 我想用一个控制器创建简单的hello world应用程序。 Plain spring without any classes works, but when I add a controller, change xml files (following step-by-step tutorials), and try to open localhost/project/hello.html, it throws me 404 error. 没有任何类的普通弹簧工作,但是当我添加一个控制器,更改xml文件(按照分步教程),并尝试打开localhost / project / hello.html时,它会抛出404错误。
package com.beingjavaguys.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class HomeController {
@RequestMapping("/hello")
public ModelAndView test() {
String message = "Welcome to Spring 4.0 !";
return new ModelAndView("hello", "message", message);
}
}
web.xml: web.xml中:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
</web-app>
dispatcher-servlet.xml: 调度员servlet.xml中:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:component-scan base-package="com.beingjavaguys.controller" />
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<!--
Most controllers will use the ControllerClassNameHandlerMapping above, but
for the index controller we are using ParameterizableViewController, so we must
define an explicit mapping for it.
-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<!--
The index controller.
-->
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="index" />
</beans>
I tried changing @RequestMapping
into ("/hello.htm")
, adding request type, adding @RequestMapping
info the whole class, but nothing works. 我尝试将@RequestMapping
更改为("/hello.htm")
,添加请求类型,在整个类中添加@RequestMapping
信息,但没有任何作用。 What's wrong? 怎么了?
You need to add <mvc:annotation-driven />
or @EnableWebMvc
to your configuration to enable MVC-config in java code. 您需要将<mvc:annotation-driven />
或@EnableWebMvc
到您的配置中,以在java代码中启用MVC-config。
http://docs.spring.io/spring/docs/4.0.3.RELEASE/spring-framework-reference/htmlsingle/#mvc-config-enable http://docs.spring.io/spring/docs/4.0.3.RELEASE/spring-framework-reference/htmlsingle/#mvc-config-enable
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.