The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

完整錯誤資訊：

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The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path add.jsp /dwz-Java/WebContent/WEB-INF/jsp/management/newsline 1 JSP Problem

在出現此錯誤的專案上單擊滑鼠右鍵》Build Path》Configure Build Path

Maven專案報錯：Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clea

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project study-search: Failed to clean project: Failed to delete D:\Pxxtarget\tomcat\logs\access_log.2016-12-03

[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.

本來是執行clean tomcat7:run命令的，結果執行clean的時候就報錯了，臥槽，不能清除log,那就是log被某個程式佔用了，所以不能清除，XX，剛剛啟動的程式沒有關閉，terminate.再次啟動，ＯＫ了！

③

 //獲取當前節點的父節點

var tree = $("#contentCategory");
 var node = tree.tree("getSelected");

var father=tree.tree('getParent',node.target);

④異常

org.springframework.beans.factory.BeanDefinitionStoreException: Could not resolve bean definition resource pattern [classpath:spring/applicationContext-*.xml]; nested exception is java.io.FileNotFoundException: class path resource [spring/] cannot be resolved to URL because it does not exist
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:229)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:452)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.FileNotFoundException: class path resource [spring/] cannot be resolved to URL because it does not exist
    at org.springframework.core.io.ClassPathResource.getURL(ClassPathResource.java:187)
    at org.springframework.core.io.support.PathMatchingResourcePatternResolver.findPathMatchingResources(PathMatchingResourcePatternResolver.java:412)
    at org.springframework.core.io.support.PathMatchingResourcePatternResolver.getResources(PathMatchingResourcePatternResolver.java:286)
    at org.springframework.context.support.AbstractApplicationContext.getResources(AbstractApplicationContext.java:1159)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:216)
    ... 18 more

二月 09, 2017 10:53:45 上午 org.apache.catalina.core.StandardContext startInternal

解決辦法：

在編譯好的classes資料夾下沒有spring那個資料夾，及資料夾下的xml檔案

沒有的原因是：在pom.xml檔案中讓它掃描java資料夾下的配置檔案，於是它就自動忽略掉了，resource資料夾下的配置檔案了

解決：所以在這裡應該加上對resource的掃描，如下圖

重新啟動編譯

哈哈  classes資料夾下編譯出對應的檔案，異常解決