org.springframework.web.servlet.DispatcherServlet noHandlerFound,找不到带URI的HTTP请求的映射 [英] org.springframework.web.servlet.DispatcherServlet noHandlerFound, No mapping found for HTTP request with URI
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问题描述
当我尝试打开/页面时,收到该错误:
When I try to open / page, I receive that error:
org.springframework.web.servlet.DispatcherServlet noHandlerFound
org.springframework.web.servlet.DispatcherServlet noHandlerFound
警告:在DispatcherServlet中找不到带有URI
[/ maven-archetype-webapp /]的HTTP请求的映射,名称为
'mvc-dispatcher'
WARNING: No mapping found for HTTP request with URI [/maven-archetype-webapp/] in DispatcherServlet with name 'mvc-dispatcher'
出了什么问题?
web.xml
<web-app>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/app-context.xml</param-value>
</context-param>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
WEB-INF / app-context.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="controller"/>
<context:annotation-config/>
<bean id="mvc-dispatcher" class="controller.Home"/>
</beans>
controller / Home.java
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class Home {
String message = "Welcome to your 1st Maven Spring project !";
@RequestMapping("/")
public String simple1() {
return "simple";
}
}
推荐答案
工作例如:
WEB-INF / web.xml
<?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">
<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>/</url-pattern>
</servlet-mapping>
</web-app>
WEB-INF / dispatcher-servlet .xml
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
">
<context:component-scan base-package="controller"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
WEB-INF / jsp / simple .jsp
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
message is <b>${message}</b>
controller / Home.java
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class Home {
@RequestMapping(value = "/")
public ModelAndView simple2() {
ModelAndView mav = new ModelAndView();
mav.setViewName("simple");
mav.addObject("message", "woohoooo1234");
return mav;
}
}
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