日常错误
Tomcat无法加载SpringBoot项目，在Tomcat中发布后出现404问题
查找console发现，找不到getpara链接库，将链接库添加进去即可。
Overriding managed version 4.12 for junit pom.xml
junit已经在SpringBoot的引入库中包含了，不需要重新引入，可在pom文件中将junit的相关引入删去
出现JRE版本错误，及project facet错误
解决”Classpath entry org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER will not be exported or published”问题
解决方法：
将package属性定义为war，即war包
<packaging>war</packaging>
Build path specifies execution environment J2SE-1.5. There are no JREs installed in the workspace that are strictly compatible with this environment.
pom中加上
<properties>
<java.version>9</java.version>
</properties>
http://blog.csdn.net/Mark_LQ/article/details/51096490
http://shmilyaw-hotmail-com.iteye.com/blog/2170300
http://maven.apache.org/components/plugins/maven-compiler-plugin/
