java.lang.ExceptionInInitializerError
	at com.wangyin.aks.security.sign.SignEnvelopServiceImpl.getSignService(SignEnvelopServiceImpl.java:8)
	at com.wangyin.aks.security.sign.SignEnvelopServiceImpl.signEnvelop(SignEnvelopServiceImpl.java:13)
	at com.iruidou.bestpay.EncryptUtils.tradeRequestSSL(EncryptUtils.java:44)
	at com.iruidou.bestpay.AgreementPayServiceImpl.authTradeApply(AgreementPayServiceImpl.java:45)
	at com.iruidou.bestpay.bestTests.sumTest(bestTests.java:77)
	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:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
	at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)
Caused by: java.lang.SecurityException: class "org.bouncycastle.jcajce.provider.symmetric.IDEA$Mappings"'s signer information does not match signer information of other classes in the same package
	at java.lang.ClassLoader.checkCerts(ClassLoader.java:898)
	at java.lang.ClassLoader.preDefineClass(ClassLoader.java:668)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:761)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.bouncycastle.jce.provider.BouncyCastleProvider.loadAlgorithms(Unknown Source)
	at org.bouncycastle.jce.provider.BouncyCastleProvider.setup(Unknown Source)
	at org.bouncycastle.jce.provider.BouncyCastleProvider.access$000(Unknown Source)
	at org.bouncycastle.jce.provider.BouncyCastleProvider$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.bouncycastle.jce.provider.BouncyCastleProvider.<init>(Unknown Source)
	at com.wangyin.aks.security.sign.common.SignService.<clinit>(SignService.java:44)
	... 36 more

最近与第三方对接时，遇到上述问题。

1.找到问题，2.解决问题

原因是第三方提供的jar包中的依赖包与我方项目中某个jar包依赖版本不一致，导致的jar冲突。

刚开始找问题没有找正确一直以为是spring版本的问题，因为项目中的boot版本用的是快照版本（建议大家使用稳定版，因为踩过坑，发布某个项目时由于jar包9点进行过更新，十点发布项目时导致发布不成功。说多了都是泪）

java.lang.SecurityException: class "org.bouncycastle.jcajce.provider.symmetric.IDEA$Mappings"'s signer information does not match signer information of other classes in the same package

主要问题还是这句话，因为这个org.bouncycastle.jcajce.provider包版本冲突，第三方jar包中引用的时4.9，而本地项目中的依赖时6.2版本导致的异常。

解决方法：先找到这个类是哪个jar包中的bcpkix-jdk15on

找到这个包的依赖，先exclude，再导入与第三方jar包依赖关系版本的jar

问题解决。