Java Spring 错误汇总

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问题：java.lang.NoClassDefFoundError: com/google/common/reflect/TypeToken 

解决办法： 缺少jar包： com.google.guava 

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问题：Description:
Parameter 1 of method xxx(Bean名字) in YYY（调用的地方） required a single bean, but 2 were found:
- xxx: defined in yyy(这两行是写明两个Bean的名称和地址）
- xxx: defined in yyy
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

解决思路：spring Bean装配问题，如果有多个Bean可以考虑给最主要的加上@Primary注释，或者用@Qualifier指定使用哪个Bean

如果是在xml中标识的Bean很容易产生在这个问题

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问题：Caused by: java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationListener

原因：GenericApplicationListener 是在spring4.2之后才有的，有可能是因为jar包等级太低

解决办法：更换spring-context.jar 版本为 4.3及其以上

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问题：Caused by: java.lang.ClassNotFoundException: org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean

解决办法：缺少jar包 spring-context-support.jar

一开始以为是缺少  quartz的jar包，搞错了

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问题：javax.management.InstanceNotFoundException: org.springframework.boot:type=Admin,name=SpringApplication

at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(Unknown Source)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(Unknown Source)
at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown Source)
at javax.management.remote.rmi.RMIConnectionImpl.getAttribute(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$240(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$1/894334823.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

之后一直报 

sun.rmi.transport.tcp                    : RMI TCP Connection(2)-192.168.100.136: (port 57035) connection closed

sun.rmi.transport.tcp                    : RMI TCP Connection(2)-192.168.100.136: close connection

解决办法：打开工具栏中的 edit configuration

将其中的Enable launch optimization 和 Enable JMX agent 两个选项的勾选去掉，再次启动就ok了