Project start times wrong instantiation of Bean failed; Nested exception is Java.lang.ExceptionInInitializerError

Problem Details:

When starting the project, error:
Org.springframework.beans.factory.BeanCreationException:Error creating Bean with Name ' Searchipattributionservice ' defined in file [***\service\searchipattributionservice.class]:
Instantiation of Bean failed; Nested exception is Java.lang.ExceptionInInitializerErrorat Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean ( abstractautowirecapablebeanfactory.java:1013) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance ( abstractautowirecapablebeanfactory.java:959) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean ( abstractautowirecapablebeanfactory.java:490) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean ( abstractautowirecapablebeanfactory.java:461) at org.springframework.beans.factory.support.abstractbeanfactory$1. GetObject (abstractbeanfactory.java:295) at Org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton ( defaultsingletonbeanregistry.java:223) at Org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean (abstractbeanfactory.java:292) at Org.springframework. Beans.factory.support.AbstractBeanFactory.getBean (abstractbeanfactory.java:194) at Org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons ( defaultlistablebeanfactory.java:626) at Org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization ( abstractapplicationcontext.java:932) at Org.springframework.context.support.AbstractApplicationContext.refresh ( abstractapplicationcontext.java:479) at Org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext ( frameworkservlet.java:651) at Org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext ( frameworkservlet.java:599) at Org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext ( frameworkservlet.java:665) at Org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext ( frameworkservlet.java:518) at Org.springframework.web.servlet.FrameworkServlet.initServletBean ( frameworkservlet.java:459) at ORG.SPRINGFRamework.web.servlet.HttpServletBean.init (httpservletbean.java:136) at Javax.servlet.GenericServlet.init ( genericservlet.java:158) at Org.apache.catalina.core.StandardWrapper.initServlet (standardwrapper.java:1284) at Org.apache.catalina.core.StandardWrapper.loadServlet (standardwrapper.java:1197) at Org.apache.catalina.core.StandardWrapper.load (standardwrapper.java:1087) at Org.apache.catalina.core.StandardContext.loadOnStartup (standardcontext.java:5266) at Org.apache.catalina.core.StandardContext.startInternal (standardcontext.java:5554) at Org.apache.catalina.util.LifecycleBase.start (lifecyclebase.java:150) at Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:901) at Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:877) at Org.apache.catalina.core.StandardHost.addChild (standardhost.java:652) at Org.apache.catalina.startup.HostConfig.deployDirectory (hostconfig.java:1263) at Org.apache.catalina.startup.hostconfig$deploydirectory.run (hostconfig.java:1948) at JAva.util.concurrent.executors$runnableadapter.call (executors.java:471) at Java.util.concurrent.FutureTask.run ( futuretask.java:262) at Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:615) at Java.lang.Thread.run ( thread.java:744) caused By:java.lang.ExceptionInInitializerErrorat Sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method) at Sun.reflect.NativeConstructorAccessorImpl.newInstance (nativeconstructoraccessorimpl.java:57) at Sun.reflect.DelegatingConstructorAccessorImpl.newInstance (delegatingconstructoraccessorimpl.java:45) at Java.lang.reflect.Constructor.newInstance (constructor.java:526) at Org.springframework.beans.BeanUtils.instantiateClass (beanutils.java:148) at Org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate ( simpleinstantiationstrategy.java:87) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantIatebean (abstractautowirecapablebeanfactory.java:1006) ... Morecaused By:java.lang.NullPointerExceptionat ***.service. Searchipattributionservice.load (searchipattributionservice.java:133) at ***.service. Searchipattributionservice.load (searchipattributionservice.java:66) at ***.service. Searchipattributionservice.<clinit> (searchipattributionservice.java:28) ... More

Resolution process:

1, check the configuration, repeatedly looked at many times, confirmed that there is no problem.

2, the Internet to find a lot of information, a lot of similar problems, after reading the answer is still not its essentials. I had to keep reading the wrong code until I saw this sentence:

caused By:java.lang.NullPointerExceptionat ***.service. Searchipattributionservice.load (searchipattributionservice.java:133) at ***.service. Searchipattributionservice.load (searchipattributionservice.java:66) at ***.service. Searchipattributionservice.<clinit> (searchipattributionservice.java:28)

The problem should be on its own code, but I remember that the code was tested, no problem. However, there is no other way, you can only follow the hint to find the problem in one step. Finally, the problem is the code. When spring instantiates this class, the null pointer error is reported when a static method is first executed, and a class is not instantiated.

Lessons learned:

1, solve problems, not impatient, to calm, calm, calm.

2, carefully read the wrong information.

3, every time you modify the code, you should remember to test, to ensure that the changes are correct.

Project start times wrong instantiation of Bean failed; Nested exception is Java.lang.ExceptionInInitializerError