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Home Web Front-end HTML Tutorial JSP引入外部文件遇到的一个问题_html/css_WEB-ITnose

JSP引入外部文件遇到的一个问题_html/css_WEB-ITnose

Jun 21, 2016 am 08:46 AM

今天搭建了一个项目,框架式Spring、SpringMVC和Mybatis,在JSP中引入js文件和css文件的时候发现一直引入不了,后来发现是SpringMVC的一个配置导致的,也就记录一下,目录结构是这样的:

project.jpg

引入外部文件的方式:

<script type="text/javascript" src="${ctx}/js/jquery.min.js"></script><script type="text/javascript" src="${ctx}/js/bootstrap.min.js"></script><script type="text/javascript" src="${ctx}/js/bootstrap-paginator.js"></script><script type="text/javascript" src="${ctx}/js/wiki.js"></script><link rel="stylesheet" type="text/css" href="${ctx}/css/bootstrap.min.css" /><link rel="stylesheet" type="text/css" href="${ctx}/css/shopin-list.css" />
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在jsp中定义了ctx的路径,也就是项目的根路径:

<%request.setAttribute("ctx", request.getContextPath());%>
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这样也是为了方便管理,在实际应用中,我们只需要这样引用就可以了:

<%@ include file="common/header.jsp"%>
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但是自己觉得这样没什么问题,但是fireBug一直报404错误,找不到js文件和css文件,我也找不到头绪,也想了很久,才发现在web.xml中拦截了所有的路径:

<servlet-mapping>        <servlet-name>shopin-wiki</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>
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又在springmvc配置文件中给做了资源映射:

<mvc:resources location="/WEB-INF/css/" mapping="/css/**"/><mvc:resources location="/WEB-INF/js/" mapping="/js/**"/>
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但是路径是在/WEB-INF/css/下,就会导致我现在放在webapp目录下的文件找不到。

总结

因为web.xml在项目启动的时候会加载在web.xml文件中配置的springmvc控制器,默认拦截了所有的url,但是静态资源我不想让拦截,我就可以在springmvc配置文件中配置资源映射,标签的意思就是我的页面引用到/css/**的资源都会从/WEB-INF/css/这个目录下寻找,自己理解是这样的,理解的比较肤浅, 底层实现自己还是不知道如何实现的。

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