使用申请入驻接口提交你的小微商户资料，使用公钥（public.pem）加密数据报错。。。。。。 javax.security.cert.CertificateException: InvocationTargetException: javax.security.cert.CertificateException: Unable to initialize, java.io.IOException: Short read of DER length     at java.base/javax.security.cert.X509Certificate.getInst(X509Certificate.java:243)     at java.base/javax.security.cert.X509Certificate.getInstance(X509Certificate.java:202)     at com.xiaoweishanghu.demo.xiaowei.WxXiaoWeiUtils.rsaEncrypt(WxXiaoWeiUtils.java:110)     at com.xiaoweishanghu.demo.DemoApplicationTests.applyment(DemoApplicationTests.java:122)     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.base/java.lang.reflect.Method.invoke(Method.java:566)     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$2.evaluate(ParentRunner.java:268)     at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)     at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)     at org.junit.runners.ParentRunner.run(ParentRunner.java:363)     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)     at org.junit.runner.JUnitCore.run(JUnitCore.java:137)     at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)     at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)     at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)     at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58) 1、参考解决方案: 需要替换jre\lib\security目录下的两个jar包，US_export_policy.jar和local_policy.jar，从Oracle官方网站查找jce_policy-8.zip直接点击文中附件（包含了JDK1.6,JDK1.7,JDK1.8），替换本地的jre\lib\security目录下这两个JAR包 2、检查证书是否正确 这两个方案都已经试过了，还是报同样的错误,脑壳疼了,各位同学给点思路