docker部署springboot https://blog.csdn.net/a656678879/article/details/100105267

缓存问题：Caused by: net.sf.ehcache.CacheException 项目运行突然报错：14:54:42.905 [restartedMain] WARN o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext - [refresh,554] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheUtils': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] 14:54:42.906 [restartedMain] INFO o.q.c.QuartzScheduler - [shutdown,666] - Scheduler JeeThinkScheduler_$_DESKTOP-95K4U9L1629269679356 shutting down. 14:54:42.906 [restartedMain] INFO o.q.c.QuartzScheduler - [standby,585] - Scheduler JeeThinkScheduler_$_DESKTOP-95K4U9L1629269679356 paused. 14:54:42.906 [restartedMain] INFO o.q.c.QuartzScheduler - [shutdown,740] - Scheduler JeeThinkScheduler_$_DESKTOP-95K4U9L1629269679356 shutdown complete. 14:54:42.907 [restartedMain] INFO sys-user - [shutdownAsyncManager,64] - ====关闭后台任务任务线程池==== 14:54:42.907 [restartedMain] INFO sys-user - [shutdownEhCacheManager,77] - ====关闭缓存==== 14:54:42.917 [restartedMain] INFO c.a.d.p.DruidDataSource - [close,1928] - {dataSource-1} closed 14:54:42.919 [restartedMain] INFO o.a.c.c.StandardService - [log,173] - Stopping service [Tomcat] 14:54:42.938 [restartedMain] ERROR o.s.b.SpringApplication - [reportFailure,858] - Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheUtils': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:324) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1378) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:575) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$123/1655440828.getObject(Unknown Source) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) at com.jeethink.MXHelloApplication.main(MXHelloApplication.java:20) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Unsatisfied dependency expressed through method 'cacheManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1288) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$123/1655440828.getObject(Unknown Source) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:204) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:525) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:630) at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:189) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:321) ... 23 common frames omitted Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheCacheManager' defined in class path resource [org/springframework/boot/autoconfigure/cache/EhCacheCacheConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1288) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$123/1655440828.getObject(Unknown Source) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:273) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1237) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1164) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760) ... 39 common frames omitted Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [net.sf.ehcache.CacheManager]: Factory method 'ehCacheCacheManager' threw exception; nested exception is net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) ... 54 common frames omitted Caused by: net.sf.ehcache.CacheException: Another CacheManager with same name 'jeethink' already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [stream=java.io.ByteArrayInputStream@71559585] at net.sf.ehcache.CacheManager.assertNoCacheManagerExistsWithSameName(CacheManager.java:529) at net.sf.ehcache.CacheManager.init(CacheManager.java:374) at net.sf.ehcache.CacheManager.<init>(CacheManager.java:259) at org.springframework.cache.ehcache.EhCacheManagerUtils.buildCacheManager(EhCacheManagerUtils.java:79) at org.springframework.boot.autoconfigure.cache.EhCacheCacheConfiguration.ehCacheCacheManager(EhCacheCacheConfiguration.java:69) at org.springframework.boot.autoconfigure.cache.EhCacheCacheConfiguration$$EnhancerBySpringCGLIB$$be47c69d.CGLIB$ehCacheCacheManager$1(<generated>) at org.springframework.boot.autoconfigure.cache.EhCacheCacheConfiguration$$EnhancerBySpringCGLIB$$be47c69d$$FastClassBySpringCGLIB$$b9674162.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) at org.springframework.boot.autoconfigure.cache.EhCacheCacheConfiguration$$EnhancerBySpringCGLIB$$be47c69d.ehCacheCacheManager(<generated>) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ... 55 common frames omitted Disconnected from the target VM, address: '127.0.0.1:64445', transport: 'socket' Process finished with exit code 0 错误提示很明显：Ehcache不允许创建同样名称的CacheManager对象。net.sf.ehcache.ehcache-core的jar包从2.5.0以上版本开始不再支持多态，而是单例模式。折磨了很久，最终还是对比就项目后发现引入的maven包有问题。如图，这个source包真是莫名其妙来的。删了就能运行了。

MinIO存储测试demo踩坑 1.使用官网提供的java版sdk代码Java SDKI.java发送https请求，报证书不信任错误解决PKIX：unable to find valid certification path to requested target 的问题set PATH=%PATH%;"D:\Program Files\Java\jre1.8.0_25\bin"keytool.exe -importcert -file 1.cer> -keystore "D:\Program Files\Java\jdk1.8.0_25\jre\lib\security\cacerts" -storepass changeitkeytool -import -alias miniooss -keystore "D:\Program Files\Java\jdk1.8.0_25\jre\lib\security\cacerts" -file 1.cer -storepass changeitII.签名错误The request signature we calculated does not match the signature you provided. Check your key and signing method.III.Access denied2.https://blog.csdn.net/ouyang_zhen/article/details/118961684

性能调优 性能调优其实是每个合格的工程师必备的技能，JVM调优，Mysql调优，各种分布式中间件的调优是绕不过的，来看下一线互联网公司的这些题目：京东：说下JVM内存模型与Java线程内存模型的区别？ 腾讯：JVM的GC执行时机是任何时候都可以吗？安全点知道吗？ 美团：CMS垃圾收集器的并发更新失败是怎么回事？如何优化？ 阿里：高并发系统为何建议选择G1垃圾收集器？ 拼多多：线上系统GC问题如何快速定位与分析？ 阿里：阿里巴巴Arthas实现原理能大概说下吗？ 百度：单机几十万并发的系统JVM如何优化？ 阿里：解释下JVM垃圾收集底层的三色标记算法？ 美团：Volatile底层的内存屏障是如何实现的？ 滴滴：能说说Mysql索引底层B+树结构与算法吗？ 滴滴：聚集索引与覆盖索引与索引下推到底是什么？ 阿里：能说说Mysql并发支撑底层Buffer Pool机制吗？ 拼多多：能说下Mysql事务底层实现原理吗？ 唯品会：MVCC机制是如何保证事务的隔离性的？ 京东：超高并发下使用事务时如何避免死锁？ 京东：对线上千万级大表加字段时，性能极慢问题如何处理？