使用mvn package -DSkipTests打包成jar包，而后上传到服务器。运行java -jar XXX.jar --env=pro后抛出：java
[localhost-startStop-1] ERROR o.s.boot.web.embedded.tomcat.TomcatStarter -[TomcatStarter.java:62]- Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'httpPutFormContentFilter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.filter.OrderedHttpPutFormContentFilter]: Factory method 'httpPutFormContentFilter' threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/exc/InvalidDefinitionException
2018-11-07 14:33:08,931 [localhost-startStop-1] WARN org.apache.catalina.loader.WebappClassLoaderBase -[DirectJDKLog.java:180]- The web application [ROOT] appears to have started a thread named [Druid-ConnectionPool-Create-1066241105] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039) com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2441) 2018-11-07 14:33:08,932 [localhost-startStop-1] WARN org.apache.catalina.loader.WebappClassLoaderBase -[DirectJDKLog.java:180]- The web application [ROOT] appears to have started a thread named [Druid-ConnectionPool-Destroy-1066241105] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Thread.sleep(Native Method) com.alibaba.druid.pool.DruidDataSource$DestroyConnectionThread.run(DruidDataSource.java:2538) 2018-11-07 14:33:08,932 [localhost-startStop-1] WARN org.apache.catalina.loader.WebappClassLoaderBase -[DirectJDKLog.java:180]- The web application [ROOT] appears to have started a thread named [lettuce-eventExecutorLoop-1-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: sun.misc.Unsafe.park(Native Method) java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078) java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) io.netty.util.concurrent.SingleThreadEventExecutor.takeTask(SingleThreadEventExecutor.java:251) io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:64) io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
一开始没有仔细看maven打包状况，忽略了maven打包的提示信息：web
[WARNING] [WARNING] Some problems were encountered while building the effective model for com.boot:boot-security:jar:1.0 [WARNING] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: com.fasterxml.jackson.core:jackso n-databind:jar -> version (?) vs 2.7.4 @ line 161, column 15 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING]
最后发现问题是，maven有个依赖包重复添加了，且版本不同，去掉后就行了。spring