最近做项目的时候，遇到一个问题，项目启动不了，并且没有任何错误日志
1.Idea启动Tomcat时报错：
Connected to server [2017-11-16 09:28:36,551] Artifact Spring_10:war exploded: Artifact is being deployed, please wait... Nov 16, 2017 9:28:37 PM org.apache.catalina.loader.WebappClassLoaderBase validateJarFile INFO: validateJarFile(/home/dela/IdeaProjects/Spring/Spring_10/out/artifacts/Spring_10_war_exploded/WEB-INF/lib/javax.servlet-api-3.1.0.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending class: javax/servlet/Servlet.class Nov 16, 2017 9:28:38 PM org.apache.catalina.deploy.WebXml setVersion WARNING: Unknown version string [3.1]. Default version will be used. Nov 16, 2017 9:28:42 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://www.springframework.org/tags is already defined Nov 16, 2017 9:28:42 PM org.apache.catalina.startup.TaglibUriRule body INFO: TLD skipped. URI: http://www.springframework.org/tags/form is already defined Nov 16, 2017 9:28:42 PM org.apache.catalina.startup.TldConfig execute INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Nov 16, 2017 9:28:43 PM org.apache.catalina.core.StandardContext startInternal **SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file** Nov 16, 2017 9:28:43 PM org.apache.catalina.core.StandardContext startInternal SEVERE: Context [] startup failed due to previous errors [2017-11-16 09:28:43,528] Artifact Spring_10:war exploded: Error during artifact deployment. See server log for details.
2.bug解决：
这个bug相当诡异啊，它诡异在IDEA的报错信息只有一句话：SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file，信息里面提示去查看错误日志，但是IDEA下面的错误日志是空！ 这就很尴尬，因为仅凭这一句话，没办法定位错误出在哪里。
(1) 找到错误日志
之前问过同事，他说如果IDEA下面没有错误日志，就去 tomcat安装包下面的logs目录 里面找，但是然而并没有找到，只有一些很久之前的错误日志。
后来才知道，错误日志在 C:\Users\wenjianbao\.IntelliJIdea2017.1\system\tomcat\(当前Project的名字)下，也就是家目录下的 .IntelliJIdea2017.1\system\tomcat， 然后找到本工程的tomcat名字，进入logs目录就能看到当天的错误日志了。
我是在 localhost.2017-11-16.log 中找到问题的原因的，错误信息如下：
Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/classpath*:db-config.properties]
at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:141)
at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:153)
at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:98)
at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:175)
at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:156)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:80)
... 52 more
(2) 解决问题
根据里面错误日志里面的提示成功解决了问题。
摘自：https://blog.csdn.net/qq_36349129/article/details/80608064