spring mvc import resource路徑問題【最簡單的卻也是最致命的】

在import resource 路徑中有兩種寫法

一種classpath，一種classpath*

那麼這兩種有什麼區別呢？

1.**classpath:**只會到你的class路徑中查找找文件；

2.**calsspath*😗*不僅包含class路徑，還包括jar文件中(class路徑)進行查找，***classpath*😗**對於多module的項目比較重要

但往往我們導入一個新的項目設置好路徑後，還會報出Cannot resolve file 'applicationContext.xml’

運行localhost:8080時，會報出：

Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:584)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

javax.servlet.ServletException: Servlet.init() for servlet [SpringMVC] threw exception
	org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742)
	org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:113)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [spring-mvc.xml]; nested exception is java.io.FileNotFoundException: class path resource [spring-mvc.xml] cannot be opened because it does not exist
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:343)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:223)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:194)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:133)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:620)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:521)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:676)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:642)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:690)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:558)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:499)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:172)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742)
	org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:113)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

java.io.FileNotFoundException: class path resource [spring-mvc.xml] cannot be opened because it does not exist
	org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:329)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:223)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:194)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:133)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:620)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:521)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:676)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:642)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:690)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:558)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:499)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:172)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742)
	org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:113)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

檢查一陣路徑，發現沒有任何問題。其實這個問題是一個幾乎可以認爲是一個不應該迷惑着我們的問題，也正如當局者迷，最簡單的確實最讓我們犯錯誤的。

resources文件屬性是否設置了

點擊後：正確的樣子

這樣路徑就不會出錯了。