redis之获取异常或者获取不到客户端

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我是靠谱客的博主紧张树叶，这篇文章主要介绍redis之获取异常或者获取不到客户端，现在分享给大家，希望可以做个参考。

异常：

复制代码

org.springframework.data.redis.RedisConnectionFailureException: Cannot get Jedis connection;
nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:162) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.getConnection(JedisConnectionFactory.java:251) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.getConnection(JedisConnectionFactory.java:58) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:128) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:91) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:78) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:178) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:153) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:86) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:43) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at com.enci.isms.web.common.redis.RedisServiceImpl.get(RedisServiceImpl.java:36) ~[RedisServiceImpl.class:na]

at com.enci.isms.web.web.common.CoreController.core(CoreController.java:122) ~[CoreController.class:na]

at com.enci.isms.web.web.common.CoreController$$FastClassBySpringCGLIB$$3d05e0de.invoke(<generated>) ~[CoreController.class:na]

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at com.enci.isms.web.web.common.CoreController$$EnhancerBySpringCGLIB$$ad51e650.core(<generated>) ~[CoreController.class:na]

at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source) ~[na:na]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_79]

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) [servlet-api.jar:na]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api.jar:na]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat7-websocket.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [shiro-all-1.3.2.jar:1.3.2]

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at com.enci.isms.web.filter.DomainFilter.doFilter(DomainFilter.java:34) [DomainFilter.class:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at eap.web.filter.LogMDCFilter.doFilterCleaned(LogMDCFilter.java:41) [isms-common-1.0.0-SNAPSHOT.jar:na]

at eap.web.filter.EnhanceFilter.doFilterInternal(EnhanceFilter.java:47) [isms-common-1.0.0-SNAPSHOT.jar:na]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at eap.web.filter.XssFilter.doFilter(XssFilter.java:21) [isms-common-1.0.0-SNAPSHOT.jar:na]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.57]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [catalina.jar:7.0.57]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.57]

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.57]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) [catalina.jar:7.0.57]

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) [tomcat-coyote.jar:7.0.57]

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) [tomcat-coyote.jar:7.0.57]

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) [tomcat-coyote.jar:7.0.57]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_79]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_79]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.57]

at java.lang.Thread.run(Thread.java:745) [na:1.7.0_79]
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

at redis.clients.util.Pool.getResource(Pool.java:42) ~[jedis-2.4.2.jar:na]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:155) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

... 91 common frames omitted
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused

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org.springframework.data.redis.RedisConnectionFailureException: Cannot get Jedis connection;
nested exception is redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:162) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.getConnection(JedisConnectionFactory.java:251) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.getConnection(JedisConnectionFactory.java:58) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:128) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:91) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:78) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:178) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:153) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:86) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:43) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

at com.enci.isms.web.common.redis.RedisServiceImpl.get(RedisServiceImpl.java:36) ~[RedisServiceImpl.class:na]



at com.enci.isms.web.web.common.CoreController.core(CoreController.java:122) ~[CoreController.class:na]

at com.enci.isms.web.web.common.CoreController$$FastClassBySpringCGLIB$$3d05e0de.invoke(<generated>) ~[CoreController.class:na]

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.2.RELEASE.jar:4.3.2.RELEASE]



at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655) ~[spring-aop-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at com.enci.isms.web.web.common.CoreController$$EnhancerBySpringCGLIB$$ad51e650.core(<generated>) ~[CoreController.class:na]



at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source) ~[na:na]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_79]

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) [servlet-api.jar:na]

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) [servlet-api.jar:na]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat7-websocket.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) [shiro-all-1.3.2.jar:1.3.2]

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [shiro-all-1.3.2.jar:1.3.2]

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at com.enci.isms.web.filter.DomainFilter.doFilter(DomainFilter.java:34) [DomainFilter.class:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at eap.web.filter.LogMDCFilter.doFilterCleaned(LogMDCFilter.java:41) [isms-common-1.0.0-SNAPSHOT.jar:na]

at eap.web.filter.EnhanceFilter.doFilterInternal(EnhanceFilter.java:47) [isms-common-1.0.0-SNAPSHOT.jar:na]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.2.RELEASE.jar:4.3.2.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at eap.web.filter.XssFilter.doFilter(XssFilter.java:21) [isms-common-1.0.0-SNAPSHOT.jar:na]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.57]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.57]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) [catalina.jar:7.0.57]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.57]

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) [catalina.jar:7.0.57]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.57]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) [catalina.jar:7.0.57]

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) [tomcat-coyote.jar:7.0.57]

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) [tomcat-coyote.jar:7.0.57]

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) [tomcat-coyote.jar:7.0.57]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_79]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_79]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.57]

at java.lang.Thread.run(Thread.java:745) [na:1.7.0_79]
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

at redis.clients.util.Pool.getResource(Pool.java:42) ~[jedis-2.4.2.jar:na]

at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.fetchJedisConnector(JedisConnectionFactory.java:155) ~[spring-data-redis-1.5.0.RELEASE.jar:1.5.0.RELEASE]

... 91 common frames omitted
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused

产生此错误的原因通常是：

一、Redis没有启动；

我自己遇到一次这样的问题。汗！

二、由于防火墙原因无法连接到Redis;

1、服务器防火墙入站规则。

2、访问Redis的应用程序所在主机的出站规则。

三、IP地址或端口错误

四、Jedis 对象用完以后，要释放掉,不让会一直占用，所以会出现无法获取新的资源。

五、Spring Boot项目，缺少依赖

如果使用Redis与Spring Boot，也会抛出此异常。
如果你使用的是Spring Boot，那么Redis的依赖是不够的，
您还需要从redis.io手动下载并安装Redis，然后将其从终端运行

me@my_pc:/path/to/redis/dir$ ./src/redis-server ./redis.conf

运行服务器后，您需要在使用Redis的所有应用程序中添加相关行：
application.properties:

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spring.redis.host: <yourhost> // usually localhost, but can also be on a LAN  
spring.redis.port: <yourport> // usually 6379, but settable in redis.conf

application.yml:

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spring:  
  redis:  
    host: <yourhost> // usually localhost, but can also be on a LAN  
    port: <yourport> // usually 6379, but settable in redis.conf

六、vm.overcommit_memory = 0，fork失败

使用redis-cli，执行ping命令，异常信息出来了：
(error)MISCONF Redis is configured to save RDB snapshots, but is currently
not able to persist on disk. Commands that may modify the data set
are disabled. Please check Redis logs for details about the error.
然后查看redis日志，出现了
WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
问题已经很清晰了，bgsave会fork一个子进程，因为vm.overcommit_memory = 0，所以申请的内存大小和父进程的一样，由于redis已经使用了60%的内存空间，所以fork失败
解决办法：
/etc/sysctl.conf 添加 vm.overcommit_memory=1
sysctl vm.overcommit_memory=1

七、当jedispool中的jedis被取完等待超过你设置的 MaxWaitMillis 就会抛出Could not get a resource from the pool

注意：RedisTemplate要求所有的key为非空，而值可以为空，但需要跟底层的序列化转换器要求一致，针对每个序列化转换器的要求可以查看Java文档来得到更多信息。
　 redis是以key-value的形式将数据存在内存中，key就是简单的string，key似乎没有长度限制，不过原则上应该尽可能的短小且可读性强，无论是否基于持久存储，
key在服务的整个生命周期中都会在内存中，因此减小key的尺寸可以有效的节约内存，同时也能优化key检索的效率。

八、连接池中空闲的连接过一阵子就会自动断开，但是连接池还以为连接正常

参考配置文件：

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JedisPoolConfig config = new JedisPoolConfig();  
config.setMaxTotal(200);  
config.setMaxIdle(50);  
config.setMinIdle(8);//设置最小空闲数  
config.setMaxWaitMillis(10000);  
config.setTestOnBorrow(true);  
config.setTestOnReturn(true);  
//Idle时进行连接扫描  
config.setTestWhileIdle(true);  
//表示idle object evitor两次扫描之间要sleep的毫秒数  
config.setTimeBetweenEvictionRunsMillis(30000);  
//表示idle object evitor每次扫描的最多的对象数  
config.setNumTestsPerEvictionRun(10);  
//表示一个对象至少停留在idle状态的最短时间，然后才能被idle object evitor扫描并驱逐；这一项只有在timeBetweenEvictionRunsMillis大于0时才有意义  
config.setMinEvictableIdleTimeMillis(60000);  
JedisPool pool = new JedisPool(config, ip, port, 10000, "密码", 0);