org.springframework.web.client.ResourceAccessException: I/O error on GET request for "https://myimportant-domain/": sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target; nested exception is javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

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Samebug tips

  1. ,
    Expert tip

    If you're using wiremock, configure your code to accept wiremock self-signed certificate or create a keystore and certificate that are trusted by your HTTP client and configure wiremock to use that

  2. ,
    via Stack Overflow by carlos

    Set the mail.smtp.ssl.trust system property to an smtp host, like smtp.gmail.com.

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I/O error on GET request for "https://myimportant-domain/": sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
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sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target	at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)	at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)	at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)	at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)	at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)	at sun.security.validator.Validator.validate(Validator.java:260)	at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)	at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)	at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:105)	at org.apache.http.ssl.SSLContextBuilder$TrustManagerDelegate.checkServerTrusted(SSLContextBuilder.java:298)	at sun.security.ssl.AbstractTrustManagerWrapper.checkServerTrusted(SSLContextImpl.java:922)	at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1491)	at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)	at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)	at sun.security.ssl.Handshaker.process_record(Handshaker.java:914)	at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062)	at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)	at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:394)	at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:353)	at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:141)	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)	at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)	at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:91)	at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)	at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:596)	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:557)	at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:475)	at com.company.client.SuperClient.getData(SuperClient.java:94)	at com.company.ApplicationTests.getDataTest(ApplicationTests.java:21)	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.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:254)	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)	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:193)	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)	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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)