Question

我是Spring MVC的新手。我正在尝试使用Spring MVC和Tomcat作为服务器创建一个简单的Web应用程序。但是当我部署我的项目时，我找不到错误404。请你帮助我好吗？这是我的web.xml

  <web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">
    <servlet>
        <servlet-name>spring-web</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring-web</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/spring-web-servlet.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener> 
    <welcome-file-list>
        <welcome-file>/main/index</welcome-file>
    </welcome-file-list>
  </web-app>

这是我的控制器：

@Controller
@RequestMapping(value = "/main")
  public class RootController {
    @RequestMapping(value = "/index")
    public String printHello(){
        return "index";
      }
    }

这是我的spring-web-servlet.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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-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/tx
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
    <context:component-scan base-package="com.controllers" />
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/jsp/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
    <mvc:annotation-driven />
</beans>

Answer 1

默认情况下，服务器按以下顺序查找欢迎文件：

<welcome-file-list> in web.xml
index.html
index.htm
index.jsp

如果找不到这些文件，则服务器呈现404错误。

Answer 2

问题出在我项目的结构上。我创建错误，因此我的项目的整个结构的正确性和文件的可见性存在问题。创建新项目帮助了我。

在tomcat

2 个答案: