java - 为什么 Spring MVC 会出现 404 错误？

Question

我有一个简单的 Spring MVC 应用程序。我收到 HTTP 状态 404 报告。帮我解决这个问题。谢谢。

HTTP Status 404 – Not Found

Type Status Report

Message /WEB-INF/users_view.jsp

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.

Apache Tomcat/9.0.0.M26

我的 Controller :

@Controller
public class UserController {

    @RequestMapping(value = "/users", method = RequestMethod.GET)
    public String showUsers(ModelMap model) {
        return "users_view";
    }
}

项目结构:

我的web.xml:

<display-name>User</display-name>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Process application servlet -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:applicationContext.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>*.do</url-pattern>
</servlet-mapping>

和applicationContext.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:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation= "http://www.springframework.org/schema/beans
                            http://www.springframework.org/schema/beans/spring-beans.xsd
                            http://www.springframework.org/schema/context
                            http://www.springframework.org/schema/context/spring-context.xsd">

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <context:component-scan base-package="ru.pravvich" />

</beans>

Answer 1

由于您的 jsp 位于 WEB-INF/view 下，且 InternalResourceViewResolver 前缀指向 /WEB-INF/，您遇到 404 错误。要修复此问题，请将前缀更改为 /WEB-INF/view/。