No mapping found for HTTP request with URI [/exam3/welcome] in DispatcherServlet
2016-03-08 14:58
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项目是使用spring MVC
(1)在浏览器中访问,后台总报错:
No mapping found for HTTP request with URI [/exam3/welcome] in DispatcherServlet with name 'spring2'
查了好半天,才发现是controller 没有扫描到。
我是使用的注解。
spring mvc配置文件如下:
Xml代码 收藏代码
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"
>
<!-- HandlerMapping -->
<bean
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<!-- HandlerAdapter -->
<bean
class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<!-- ViewResolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:annotation-driven />
<!-- 处理器 -->
<!-- <bean name="/hello" class="com.mvc.jn.controller.HelloWorldController"/> -->
<context:component-scan base-package="com"/>
</beans>
controller 的目录结构如下:
(2)这个问题解决之后,又报错:
No mapping found for HTTP request with URI [/exam3/WEB-INF/jsp/welcome.jsp] in DispatcherServlet with name 'spring2'
结果发现是web.xml配置得有问题,下面是有问题的:
Xml代码 收藏代码
<servlet>
<servlet-name>spring2</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring2</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
解决方法:把url-pattern 由/* 改为/
(1)在浏览器中访问,后台总报错:
No mapping found for HTTP request with URI [/exam3/welcome] in DispatcherServlet with name 'spring2'
查了好半天,才发现是controller 没有扫描到。
我是使用的注解。
spring mvc配置文件如下:
Xml代码 收藏代码
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"
>
<!-- HandlerMapping -->
<bean
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<!-- HandlerAdapter -->
<bean
class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
<!-- ViewResolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:annotation-driven />
<!-- 处理器 -->
<!-- <bean name="/hello" class="com.mvc.jn.controller.HelloWorldController"/> -->
<context:component-scan base-package="com"/>
</beans>
controller 的目录结构如下:
(2)这个问题解决之后,又报错:
No mapping found for HTTP request with URI [/exam3/WEB-INF/jsp/welcome.jsp] in DispatcherServlet with name 'spring2'
结果发现是web.xml配置得有问题,下面是有问题的:
Xml代码 收藏代码
<servlet>
<servlet-name>spring2</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring2</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
解决方法:把url-pattern 由/* 改为/
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