警告: No mapping found for HTTP request with URI [/web002/list.do] in DispatcherServlet 的解决方法

警告: No mapping found for HTTP request with URI [/web002/list.do] in DispatcherServlet with name 'springmvc'的解决方法

修改之前：

<?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:context="http://www.springframework.org/schema/context"xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd       http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-4.0.xsd       http://www.springframework.org/schema/util        http://www.springframework.org/schema/util/spring-util-4.0.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd       http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-4.0.xsd        http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"><!-- 开启注解驱动 --><mvc:annotation-driven></mvc:annotation-driven><!-- 配置controller所在的包 --><context:component-scan base-package="com.neuedu.web"></context:component-scan><!-- 配置视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property></bean></beans>

修改之后：

<?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:context="http://www.springframework.org/schema/context"xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd       http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-4.0.xsd       http://www.springframework.org/schema/util        http://www.springframework.org/schema/util/spring-util-4.0.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd       http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-4.0.xsd        http://www.springframework.org/schema/aop       http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"><!-- 开启注解驱动 --><mvc:annotation-driven></mvc:annotation-driven><!-- 配置controller所在的包 --><context:component-scan base-package="com.neuedu.controller"></context:component-scan><!-- 配置视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property></bean></beans>

我的问题出在springmvc.xml文件里配置controller所在的包时写错了包路径，每个人的错误都不太一样，但是都是小问题，所以不好找。

还有的问题是在这里：

<servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:config/springmvc.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>

只要把servlet-mapping里的url-pattern改为*.do就可以全部拦截，/*.do是无效的哦。

还有一点就是你要确保controller里的数据是拿得到的，数据库是可以连接到的。