java 当 url 模式是路径时，无法让 Spring MVC 调度程序正常工作
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Can't get Spring MVC dispatcher to work properly when url pattern is a path
提问by Brett Ryan
I have a web app that we're applying spring MVC just for REST services at the moment. We want our rest services to appear under ${contextPath}/rest/**, however when I set this we get:
我有一个 Web 应用程序，我们目前正在将 Spring MVC 应用于 REST 服务。我们希望我们的休息服务出现在 下${contextPath}/rest/**，但是当我设置它时，我们得到：
No mapping found for HTTP request with URI [/myapp/rest/testSvc/message] in DispatcherServlet with name 'Spring MVC Dispatcher Servlet'
在名为“Spring MVC Dispatcher Servlet”的 DispatcherServlet 中找不到带有 URI [/myapp/rest/testSvc/message] 的 HTTP 请求的映射
My web.xmlhas:
我的web.xml有：
<servlet>
<servlet-name>Spring MVC Dispatcher Servlet</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>Spring MVC Dispatcher Servlet</servlet-name>
<url-pattern>/rest</url-pattern>
</servlet-mapping>
servlet-context.xml, which is fine and is registering services as they get registered at startup.
servlet-context.xml，这很好，并且正在注册服务，因为它们在启动时注册。
<context:component-scan base-package="com.mycompany.myapp.rest" />
<mvc:annotation-driven />
My controller looks as follows:
我的控制器如下所示：
@Controller
@RequestMapping(value = "/rest/testService")
public class TestREST {
@RequestMapping(value="message", method=RequestMethod.GET)
public @ResponseBody String getMessage() {
return "REST working";
}
If I cahnge the url-patternin web.xmlto *.rest and my request-mapping for messageto message.restit works.
如果我cahnge的url-pattern在web.xml为* .rest和我的请求映射message到message.rest它的工作原理。
回答by skaffman
The problem is likely that you have repeated the /restprefix in both web.xmland @RequestMapping. It should be in one or the either, but not both, e.g.
问题很可能是您/rest在web.xml和 中都重复了前缀@RequestMapping。它应该在一个或两个中，但不能同时存在，例如
<url-pattern>/rest</url-pattern>
and
和
@RequestMapping(value = "/testService")
The paths upon which @RequestMappingoperates are the parts of the path that follows the servlet part, and your web.xmldefines the servlet part as /path, so @RequestMappingmatches against whatever is left, i.e. /testService.
赖以路径@RequestMapping操作是如下的servlet的部分路径的部分，你web.xml定义了一个Servlet一部分/path，因此@RequestMapping对无论是左，即相匹配/testService。
In its current form, your @RequestMappingis actually matching against {contextPath}/rest/rest/testService.
在目前的形式中，您@RequestMapping实际上是与{contextPath}/rest/rest/testService.
回答by Raghuram
Perhaps you could try changing to <url-pattern>/rest/*</url-pattern> or <url-pattern>/rest*</url-pattern> and see if that helps.
也许您可以尝试更改为<url-pattern>/rest/*</url-pattern> 或<url-pattern>/rest*</url-pattern> 看看是否有帮助。
