解决SpringMVC项目连接RabbitMQ出错的问题

在第一次启动项目的时候，由于使用了rabbitmq的默认guest账号，怎么也登不进去，后来还是在admin重新创建了一个其他的账号，然后开启所有的权限，最后在配置文件中修改了账号，这样才成功连接rabbitmq。

但是到今天重新启动项目的时候，想试试guest账号还行不行，尝试了一次，居然可以重新启动了，吃惊！

在此记录，以防今后忘记。

补充：解决rabbitmq无法连接导致的错误

最近学写项目的时候用到rabbitmq始终无法连接,踩了挺多坑的,希望分享出来,让大家少踩一些. 错误提示是这样的:

org.springframework.amqp.amqpioexception: java.io.ioexception
at org.springframework.amqp.rabbit.support.rabbitexceptiontranslator.convertrabbitaccessexception(rabbitexceptiontranslator.java:71) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.connection.abstractconnectionfactory.createbareconnection(abstractconnectionfactory.java:476) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.connection.cachingconnectionfactory.createconnection(cachingconnectionfactory.java:614) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.connection.connectionfactoryutils.createconnection(connectionfactoryutils.java:240) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.core.rabbittemplate.doexecute(rabbittemplate.java:1797) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.core.rabbittemplate.execute(rabbittemplate.java:1771) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.amqp.rabbit.core.rabbittemplate.execute(rabbittemplate.java:1752) ~[spring-rabbit-2.0.3.release.jar:2.0.3.release]
at org.springframework.boot.actuate.amqp.rabbithealthindicator.getversion(rabbithealthindicator.java:48) ~[spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.amqp.rabbithealthindicator.dohealthcheck(rabbithealthindicator.java:44) ~[spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.health.abstracthealthindicator.health(abstracthealthindicator.java:84) ~[spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.health.compositehealthindicator.health(compositehealthindicator.java:68) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.health.healthendpoint.health(healthendpoint.java:47) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at sun.reflect.nativemethodaccessorimpl.invoke0(native method) ~[na:1.8.0_202]
at sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62) ~[na:1.8.0_202]
at sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) ~[na:1.8.0_202]
at java.lang.reflect.method.invoke(method.java:498) ~[na:1.8.0_202]
at org.springframework.util.reflectionutils.invokemethod(reflectionutils.java:223) [spring-core-5.0.6.release.jar:5.0.6.release]
at org.springframework.boot.actuate.endpoint.invoke.reflect.reflectiveoperationinvoker.invoke(reflectiveoperationinvoker.java:76) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.endpoint.annotation.abstractdiscoveredoperation.invoke(abstractdiscoveredoperation.java:61) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.endpoint.jmx.endpointmbean.invoke(endpointmbean.java:104) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at org.springframework.boot.actuate.endpoint.jmx.endpointmbean.invoke(endpointmbean.java:93) [spring-boot-actuator-2.0.2.release.jar:2.0.2.release]
at com.sun.jmx.interceptor.defaultmbeanserverinterceptor.invoke(defaultmbeanserverinterceptor.java:819) [na:1.8.0_202]
at com.sun.jmx.mbeanserver.jmxmbeanserver.invoke(jmxmbeanserver.java:801) [na:1.8.0_202]
at javax.management.remote.rmi.rmiconnectionimpl.dooperation(rmiconnectionimpl.java:1468) [na:1.8.0_202]
at javax.management.remote.rmi.rmiconnectionimpl.access300 ( r m i c o n n e c t i o n i m p l . j a v a : 76 ) [ n a : 1.8. 0 2 02 ] a t j a v a x . m a n a g e m e n t . r e m o t e . r m i . r m i c o n n e c t i o n i m p l 300(rmiconnectionimpl.java:76) [na:1.8.0_202] at javax.management.remote.rmi.rmiconnectionimpl300(rmiconnectionimpl.java:76)[na:1.8.0 
2
​ 
 02]atjavax.management.remote.rmi.rmiconnectionimplprivilegedoperation.run(rmiconnectionimpl.java:1309) [na:1.8.0_202]
at javax.management.remote.rmi.rmiconnectionimpl.doprivilegedoperation(rmiconnectionimpl.java:1401) [na:1.8.0_202]
at javax.management.remote.rmi.rmiconnectionimpl.invoke(rmiconnectionimpl.java:829) [na:1.8.0_202]
at sun.reflect.generatedmethodaccessor112.invoke(unknown source) ~[na:na]
at sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) ~[na:1.8.0_202]
at java.lang.reflect.method.invoke(method.java:498) ~[na:1.8.0_202]
at sun.rmi.server.unicastserverref.dispatch(unicastserverref.java:357) [na:1.8.0_202]
at sun.rmi.transport.transport$1.run(transport.java:200) [na:1.8.0_202]
at sun.rmi.transport.transport1. r u n ( t r a n s p o r t . j a v a : 197 ) [ n a : 1.8. 0 2 02 ] a t j a v a . s e c u r i t y . a c c e s s c o n t r o l l e r . d o p r i v i l e g e d ( n a t i v e m e t h o d ) [ n a : 1.8. 0 2 02 ] a t s u n . r m i . t r a n s p o r t . t r a n s p o r t . s e r v i c e c a l l ( t r a n s p o r t . j a v a : 196 ) [ n a : 1.8. 0 2 02 ] a t s u n . r m i . t r a n s p o r t . t c p . t c p t r a n s p o r t . h a n d l e m e s s a g e s ( t c p t r a n s p o r t . j a v a : 573 ) [ n a : 1.8. 0 2 02 ] a t s u n . r m i . t r a n s p o r t . t c p . t c p t r a n s p o r t 1.run(transport.java:197) [na:1.8.0_202] at java.security.accesscontroller.doprivileged(native method) [na:1.8.0_202] at sun.rmi.transport.transport.servicecall(transport.java:196) [na:1.8.0_202] at sun.rmi.transport.tcp.tcptransport.handlemessages(tcptransport.java:573) [na:1.8.0_202] at sun.rmi.transport.tcp.tcptransport1.run(transport.java:197)[na:1.8.0 
2
​ 
 02]atjava.security.accesscontroller.doprivileged(nativemethod)[na:1.8.0 
2
​ 
 02]atsun.rmi.transport.transport.servicecall(transport.java:196)[na:1.8.0 
2
​ 
 02]atsun.rmi.transport.tcp.tcptransport.handlemessages(tcptransport.java:573)[na:1.8.0 
2
​ 
 02]atsun.rmi.transport.tcp.tcptransportconnectionhandler.run0(tcptransport.java:834) [na:1.8.0_202]
at sun.rmi.transport.tcp.tcptransportc o n n e c t i o n h a n d l e r . l a m b d a connectionhandler.lambdaconnectionhandler.lambdarun0 ( t c p t r a n s p o r t . j a v a : 688 ) [ n a : 1.8. 0 2 02 ] a t j a v a . s e c u r i t y . a c c e s s c o n t r o l l e r . d o p r i v i l e g e d ( n a t i v e m e t h o d ) [ n a : 1.8. 0 2 02 ] a t s u n . r m i . t r a n s p o r t . t c p . t c p t r a n s p o r t 0(tcptransport.java:688) [na:1.8.0_202] at java.security.accesscontroller.doprivileged(native method) [na:1.8.0_202] at sun.rmi.transport.tcp.tcptransport0(tcptransport.java:688)[na:1.8.0 
2
​ 
 02]atjava.security.accesscontroller.doprivileged(nativemethod)[na:1.8.0 
2
​ 
 02]atsun.rmi.transport.tcp.tcptransportconnectionhandler.run(tcptransport.java:687) [na:1.8.0_202]
at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1149) ~[na:1.8.0_202]
at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:624) ~[na:1.8.0_202]
at java.lang.thread.run(thread.java:748) ~[na:1.8.0_202]

这是因为我们并没有创建出用户

首先打开rabbitmq界面add user 创建用户

有了用户之后是no access

点击右边的virtual hosts 咱们新建一个virtual host

如图 我们设置user 然后set permission

这里我们直接设置为超级管理员了

(权限分为超级管理原,监控者,policymaker,普通管理员和只能产生生产者和消费者普通用户)

当发现current permissions有了你的权限再尝试连接就ok拉~

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。如有错误或未考虑完全的地方，望不吝赐教。