java - 为什么 throwExceptionIfNoHandlerFound 在 spring mvc 中的 web.xml 中不起作用

Question

    <servlet>
        <servlet-name>app1</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>
            <param-name>contextClass</param-name>
            <param-value>
                org.springframework.web.context.support.AnnotationConfigWebApplicationContext
            </param-value>
        </init-param>

        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>
                com.web.springmvc
            </param-value>
        </init-param>

        <init-param>
            <param-name>throwExceptionIfNoHandlerFound</param-name>
            <param-value>true</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>app1</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

为什么 throwExceptionIfNoHandlerFound 不起作用并返回 404 页面，尽管没有找到请求的处理程序

标签： javaspringspring-mvc