當(dāng)我訪問 First_Spring_MVC/welcome 時(shí)，出現(xiàn)以下錯(cuò)誤：org.springframework.web.servlet.PageNotFound noHandlerFound警告：在名稱為“spring-dispatcher”的 DispatcherServlet 中找不到具有 URI [/First_Spring_MVC/welcome] 的 HTTP 請求的映射這是我的 web.xml 文件：<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">  <display-name>First_Spring_MVC</display-name>  <servlet>    <servlet-name>spring-dispatcher</servlet-name>    <servlet-class>    org.springframework.web.servlet.DispatcherServlet  </servlet-class>  </servlet>  <servlet-mapping>    <servlet-name>spring-dispatcher</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>這是 spring-dispatcher-servlet.xml：<?xml version="1.0" encoding="UTF-8"?><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"    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/context    http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"><context:component-scan base-package="com.webapp.helloController" /> <bean id="viewResolver"    class="org.springframework.web.servlet.view.InternalResourceViewResolver" >        <property name="prefix">            <value>/WEB-INF/</value>        </property>        <property name="suffix">            <value>.jsp</value>        </property>    </bean> </beans>