找不到URI Spring MVC的HTTP请求的映射 [英] No mapping found for HTTP request with URI Spring MVC

问题描述

这是我的Web.xml

Here's my Web.xml

<servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/spring/servlet-context.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>

我的servlet-context.xml

my servlet-context.xml

<context:component-scan base-package="com.springexample.controller.impl" />
    <mvc:annotation-driven />

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

最后是Handler类.在com.springexample.controller.impl下

And lastly the Handler class. which is under com.springexample.controller.impl

@Controller
public class IndexControllerImpl implements IndexController {

    @RequestMapping("/")
    public String index() {

        return "index";
    }
}

但是要转到localhost:8080/projectname/

它返回404错误.

Jul 27, 2013 8:18:31 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/tasklist/WEB-INF/views/index.jsp] in DispatcherServlet with name 'dispatcherServlet'
Jul 27, 2013 8:18:37 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/tasklist/index] in DispatcherServlet with name '

这是我的项目结构

推荐答案

配置了web.xml后，您在问题中的方式尤其如此:

With the web.xml configured they way you have in the question, in particular:

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

对您的Web应用程序进行的所有请求都将定向到DispatcherServlet.这包括/tasklist/，/tasklist/some-thing.html，/tasklist/WEB-INF/views/index.jsp之类的请求.

ALL requests being made to your web app will be directed to the DispatcherServlet. This includes requests like /tasklist/, /tasklist/some-thing.html, /tasklist/WEB-INF/views/index.jsp.

因此，当控制器返回指向.jsp的视图时，DispatcherServlet跳入并开始寻找可以为该请求提供服务的控制器，而不是允许服务器容器为该请求提供服务，它找不到任何内容，因此没有找到404.

Because of this, when your controller returns a view that points to a .jsp, instead of allowing your server container to service the request, the DispatcherServlet jumps in and starts looking for a controller that can service this request, it doesn't find any and hence the 404.

最简单的解决方法是按照以下步骤进行servlet URL映射:

The simplest way to solve is to have your servlet url mapping as follows:

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

请注意缺少的*.这告诉容器，其中没有path info的任何请求(URL末尾没有.xxx的请求)都应发送到DispatcherServlet.通过这种配置，当接收到xxx.jsp请求时，将不会查询DispatcherServlet，并且servlet容器的默认servlet将为该请求提供服务并按预期方式显示jsp.

Notice the missing *. This tells the container that any request that does not have a path info in it (urls without a .xxx at the end), should be sent to the DispatcherServlet. With this configuration, when a xxx.jsp request is received, the DispatcherServlet is not consulted, and your servlet container's default servlet will service the request and present the jsp as expected.

希望这会有所帮助，我知道您先前的评论指出问题已解决，但是解决方案不能只是将method=RequestMethod.GET添加到RequestMethod.

Hope this helps, I realize your earlier comments state that the problem has been resolved, but the solution CAN NOT be just adding method=RequestMethod.GET to the RequestMethod.

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