Java spring mvc：资源标签和404错误
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spring mvc:resources tag and 404 error
提问by Kien Dang Ngoc
I'm trying to use tag <mvc:resources>
我正在尝试使用标签 <mvc:resources>
this is my project structure
这是我的项目结构
what I want is to access to javascript in js folder and css in styles folder
however, whenever I add this to my dispatcher-servlet.xml
我想要的是访问 js 文件夹中的 javascript 和样式文件夹中的 css
但是，每当我将它添加到我的 dispatcher-servlet.xml
<mvc:resources mapping="/resources/**" location="/"/>
I got error 404, when run the project (the project will redirect to login.htm which is login.jsp page)
运行项目时出现错误 404（项目将重定向到 login.htm，即 login.jsp 页面）
this is my dispatcher-servlet.xml code
这是我的 dispatcher-servlet.xml 代码
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:component-scan base-package="com.swcommodities.wsmill.controller"/>
<mvc:resources mapping="/resources/**" location="/"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/"
p:suffix=".jsp" />
<tx:annotation-driven/>
.
.
.
</beans>
this is web.xml
这是 web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
I don't know why I delete the line <mvc:resources...the project run correctly, but when add this one to the project, I get 404 error immediately. I think this one make some conflict with the current project.
我不知道为什么我删除了<mvc:resources...项目运行正确的行，但是当将这一行添加到项目时，我立即收到 404 错误。我认为这与当前的项目有些冲突。
回答by Septem
since resource files are in fold js and styles, you need to change mapping to:
由于资源文件在折叠 js 和样式中，因此您需要将映射更改为：
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/styles/**" location="/styles/" />
and load them in jsp:
并在jsp中加载它们：
<script type="text/javascript" src="/js/file.js"></script>
<link type="text/css" href="/styles/file.css" />
回答by Ayman
You need to set the full path in the location attribute, like this:
您需要在 location 属性中设置完整路径，如下所示：
<mvc:resources mapping="/resources/js/**" location="/js/" />
One a separate note, I would recommend you put your resources all in one folder all together, for example "assets", because in your current setup a malicious user can access anything under WEB-INF/ which is obviously not what you want.
一个单独的说明，我建议您将所有资源放在一个文件夹中，例如“资产”，因为在您当前的设置中，恶意用户可以访问 WEB-INF/ 下的任何内容，这显然不是您想要的。
Let me know if this works.
让我知道这个是否奏效。
Ayman
艾曼
回答by LuizPoleto
The answer is here:
答案在这里：
Using <mvc:resources .../> in spring 3 causes all other views to stop working
在 spring 3 中使用 <mvc:resources .../> 会导致所有其他视图停止工作
Quoting the author: "<mvc:resources>requires <mvc:annotation-driven>(or explicitly declared handler mappings, etc)."
引用作者的话：“<mvc:resources>需要<mvc:annotation-driven>（或显式声明的处理程序映射等）。”
That did the trick for me.
这对我有用。
