Spring控制器映射配置和静态资源 [英] Spring controller mapping configuration and static resources

问题描述

我在通过控制器拦截对静态资源的请求时遇到问题.

这是web.xml(与问题有关的部分):

<servlet>
    <servlet-name>testing</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>testing</servlet-name>
    <url-pattern>/testing/*</url-pattern>
</servlet-mapping>

这里是testing-servlet.xml:

<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/WEB-INF/resources/" />

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

这是控制器类源代码:

@Controller
@RequestMapping(value = "/testing")
public class TestingController {
    @RequestMapping(method = RequestMethod.GET)
    public String doSomething() {
        return "doView";
    }

    @RequestMapping(value = "/getSomething", method = RequestMethod.GET)
    public String getSomething(@RequestParam String id) {
        return "getView";
    }
}

以及使用JavaScript声明静态文件的doView.jsp和getView.jsp文件的最后一个片段:

<script src="testing/resources/js/jquery.js"></script>

有一件事我不理解-为什么我只输入http://localhost:8080/app/testing来获取doView.jsp，但是为了获得getView.jsp，我需要输入http://localhost:8080/app/testing/testing/getSomething("testing"键入两次)./p>

现在是该主题的主要原因-当我从类定义(@RequestMapping(value = "/testing")中删除请求映射注释，并将其保留在方法上时，我根本无法获取jquery.js文件.当我键入我得到了doView.jsp，浏览器中的开发人员工具没有报告任何问题(缺少jquery.js文件或其他内容)，该请求只是被Spring的调度程序servlet拦截.不必两次键入测试"即可打开getView.jsp.;)

有人知道解决方案如何使mvc:resources标签在这种情况下工作吗?而且，我不能将整个测试servlet的URL映射设置为"/". ;)

解决方案

首先是您问题的第一部分，这是正常现象.您已将/testing/*声明为Dispatcher servlet的url-pattern，这意味着spring会考虑/testing/之后出现的所有事物"，因此会被拦截.然后添加了@RequestMapping批注，并用testing填充了它的value参数，这可能会引起混淆.您可能考虑将/ANOTHER_NAME 用作url-pattern而不是进行测试，并且将对控制器定义的请求映射为 testing .

对于第二部分，在我看来，您已将js文件放在privte安全文件夹/src/main/resources 中，您可以考虑将其放在/src中/webapp/public-resources ，然后按照以下步骤配置 :

<mvc:resources mapping="/resources/**"
           location="/, classpath:/WEB-INF/public-resources/"
           cache-period="10000" />

I have an issue with intercepting request to static resources by controller.

Here is web.xml (part related with the problem):

<servlet>
    <servlet-name>testing</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>testing</servlet-name>
    <url-pattern>/testing/*</url-pattern>
</servlet-mapping>

Here is testing-servlet.xml:

<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/WEB-INF/resources/" />

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

Here is controller class source code:

@Controller
@RequestMapping(value = "/testing")
public class TestingController {
    @RequestMapping(method = RequestMethod.GET)
    public String doSomething() {
        return "doView";
    }

    @RequestMapping(value = "/getSomething", method = RequestMethod.GET)
    public String getSomething(@RequestParam String id) {
        return "getView";
    }
}

And the last snipet of doView.jsp and getView.jsp files with declaration of static file with JavaScript:

<script src="testing/resources/js/jquery.js"></script>

There is one thing I don't understand - why do I get doView.jsp by entering only http://localhost:8080/app/testing but in order to get getView.jsp I need to enter http://localhost:8080/app/testing/testing/getSomething ("testing" typed twice).

And now the main reason of this topic - when I remove request mapping annotation from class definition (@RequestMapping(value = "/testing") and leave those on methods then I'm not able to get jquery.js file at all. When I type http://localhost:8080/app/testing/resources/js/jquery.js I get doView.jsp. There isn't any issue reported by developer tool in browser (missing jquery.js file or something) - this request is just intercepted by Spring's dispatcher servlet. The only advantage in this configuration is that I don't have to type "testing" twice in order to open getView.jsp. ;)

Does anyone know solution how to make mvc:resources tag working in such situation? And no I can't set URL mapping of whole testing servlet to "/". ;)

解决方案

first the first part of you question, this is a normal behaviour. you declared /testing/* as url-pattern for your Dispatcher servlet which means that all "things" appearing after the /testing/ is considered by spring and so intercepted. you had then add a @RequestMapping annotation and you fill the value parameter of it with testing which may lead to a confusion. You may consider to use /ANOTHER_NAME as url-pattern instead of testing and keey the request mapping over your controller definition as testing.

for the second part , it seems to me you put you js file within /src/main/resources which is a privte secured folder, you may consider to put it within /src/webapp/public-resources then configure your as follow :

<mvc:resources mapping="/resources/**"
           location="/, classpath:/WEB-INF/public-resources/"
           cache-period="10000" />

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