Spring Framework静态资源设置问题

Question

我已经使用 XML 文件中的以下设置配置了我的 spring 项目以迎合静态资源：

<annotation-driven />
<resources mapping="/resources/**" location="/resources/" />

但是当我尝试直接访问静态内容时，比如使用下面的 URL：

http://localhost:8080/main/resources/css/app.css

请求不会在浏览器中显示静态 CSS 内容，而是转到 Controller 中的以下方法：

@RequestMapping(value = "/{countryID}/{stateId}/{cityId}", method = RequestMethod.GET)
    public String city(@PathVariable("countryID") String countryID, @PathVariable("stateId") String stateId, @PathVariable("cityId") String cityId, Locale locale, Model model) {
        System.out.println("input "+stateId);
        System.out.println("input "+countryID);
        System.out.println("input "+cityId);
        model.addAttribute("serverTime", "");
        return "home";
    }

一旦请求导致此方法而不是显示静态 CSS 文件，我会看到由 return call "home" 返回的 JSP 页面。

我已经检查并重新检查，但并没有真正发现任何设置问题。 请看一下，让我看看这里可能出了什么问题。

下面是我的应用程序正在使用的主控制器。

import java.util.Locale;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/")
public class MainController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String country(Locale locale, Model model) {
        System.out.println("nothing but home page");
        return "home";
    }

    @RequestMapping(value = "/{countryID}", method = RequestMethod.GET)
    public String country(@PathVariable("countryID") String countryID, Locale locale, Model model) {
        System.out.println("input country "+countryID);
        return "home";
    }   

    @RequestMapping(value = "/{countryID}/{stateId}", method = RequestMethod.GET)
    public String state(@PathVariable("countryID") String countryID, @PathVariable("stateId") String stateId, Locale locale, Model model) {
        System.out.println("input "+stateId);
        System.out.println("input "+countryID);
        model.addAttribute("serverTime", "");
        return "home";
    }

    @RequestMapping(value = "/{countryID}/{stateId}/{cityId}", method = RequestMethod.GET)
    public String city(@PathVariable("countryID") String countryID, @PathVariable("stateId") String stateId, @PathVariable("cityId") String cityId, Locale locale, Model model) {
        System.out.println("input "+stateId);
        System.out.println("input "+countryID);
        System.out.println("input "+cityId);
        model.addAttribute("serverTime", "");
        return "home";
    }

    @RequestMapping(value = "/{countryID}/{stateId}/{cityId}/{destId}", method = RequestMethod.GET)
    public String dest(@PathVariable("countryID") String countryID, @PathVariable("stateId") String stateId, @PathVariable("cityId") String cityId, @PathVariable("destId") String destId, Locale locale, Model model) {
        System.out.println("input "+stateId);
        System.out.println("input "+countryID);
        System.out.println("input "+cityId);
        System.out.println("input "+destId);
        model.addAttribute("serverTime", "");

        return "home";
    }
}

以下是应用程序 XML 文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        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">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <resources mapping="/resources/**" location="/resources/" />

<!--    <beans:bean class="org.springframework.web.servlet.view.tiles3.TilesViewResolver" />

    <beans:bean class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
        <beans:property name="definitions">
            <beans:list>
                <beans:value>/WEB-INF/views.xml</beans:value>
            </beans:list>
        </beans:property>
    </beans:bean> -->

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

    <context:component-scan base-package="com.travel.main" />



</beans:beans>

Answer 1

问题是，控制器中的 @RequestMapping 优先于资源映射。要改变这一点，你必须做两件事：

将属性order="0" 添加到您的资源标签中。

将标签的顺序更改为：

<resources mapping="/resources/**" location="/resources/" order="0" />
<annotation-driven />

那么它应该可以工作了。

Answer 2

似乎http://localhost:8080/main/resources/css/app.css 映射到/{countryID}/{stateId}/{cityId}：

• countryId=resources
• stateId=css
• cityId=app.css

似乎只有在没有与 URL 匹配的控制器时才会映射资源，因此您可以尝试向该控制器添加不同的路径：您可以将 @RequestMapping("/") 更改为 @RequestMapping("/mainController") 或添加类似 /city/ 的内容在city方法的匹配器中：city/{countryID}/{stateId}/{cityId}。

Answer 3

尝试以下选项：

1. 从MainController 中删除@RequestMapping("/")。
2. 将视图解析器添加到您的 Spring 配置中。例如，InternalResourceViewResolver。
3. 看看Spring doc。
4. 将资源目录移动到与视图相同的级别。即/WEB-INF/views 和/WEB-INF/resources。

希望对你有帮助！