我正在尝试使用提供的示例“发送消息”；SendEventX509.java“；但我面临着这个问题。Stacktrace如下所述

我正在尝试使用提供的示例“SendEventX509.java”发送消息，但我遇到了一个问题。Stacktrace如下所述 操作系统-视窗10

使用的Java运行时：JDK 11.0.3

使用的SDK版本：物联网中心Java设备SDK 1.17.5

“”中提供的示例

证书已从“ProvisioningX509CertGen.java”生成，设备已通过X509认证在IoHub中成功注册和设置

问题的控制台日志：

Exception in thread "main" java.io.IOException: Could not open the connection
at com.microsoft.azure.sdk.iot.device.DeviceIO.open(DeviceIO.java:164)
at com.microsoft.azure.sdk.iot.device.InternalClient.open(InternalClient.java:130)
at com.microsoft.azure.sdk.iot.device.DeviceClient.open(DeviceClient.java:317)
at samples.com.microsoft.azure.sdk.iot.SendEventX509.main(SendEventX509.java:136)
Caused by: com.microsoft.azure.sdk.iot.device.exceptions.TransportException: java.io.IOException: java.security.KeyStoreException: Key protection algorithm not found: java.security.UnrecoverableKeyException: Encrypt Private Key failed: password has been cleared
at com.microsoft.azure.sdk.iot.device.transport.mqtt.MqttIotHubConnection.open(MqttIotHubConnection.java:204)
at com.microsoft.azure.sdk.iot.device.transport.IotHubTransport.openConnection(IotHubTransport.java:700)
at com.microsoft.azure.sdk.iot.device.transport.IotHubTransport.open(IotHubTransport.java:280)
at com.microsoft.azure.sdk.iot.device.DeviceIO.open(DeviceIO.java:160)
... 3 more
Caused by: java.io.IOException: java.security.KeyStoreException: Key protection algorithm not found: java.security.UnrecoverableKeyException: Encrypt Private Key failed: password has been cleared
at com.microsoft.azure.sdk.iot.device.auth.IotHubX509SoftwareAuthenticationProvider.getSSLContext(IotHubX509SoftwareAuthenticationProvider.java:66)
at com.microsoft.azure.sdk.iot.device.transport.mqtt.MqttIotHubConnection.open(MqttIotHubConnection.java:125)
... 6 more
Caused by: java.security.KeyStoreException: Key protection algorithm not found: java.security.UnrecoverableKeyException: Encrypt Private Key failed: password has been cleared
at java.base/sun.security.pkcs12.PKCS12KeyStore.setKeyEntry(PKCS12KeyStore.java:704)
at java.base/sun.security.pkcs12.PKCS12KeyStore.engineSetKeyEntry(PKCS12KeyStore.java:601)
at java.base/sun.security.util.KeyStoreDelegator.engineSetKeyEntry(KeyStoreDelegator.java:111)
at java.base/java.security.KeyStore.setKeyEntry(KeyStore.java:1174)
at com.microsoft.azure.sdk.iot.deps.auth.IotHubSSLContext.generateSSLContextWithKeys(IotHubSSLContext.java:208)
at com.microsoft.azure.sdk.iot.deps.auth.IotHubSSLContext.(IotHubSSLContext.java:168)
at com.microsoft.azure.sdk.iot.device.auth.IotHubX509SoftwareAuthenticationProvider.generateSSLContext(IotHubX509SoftwareAuthenticationProvider.java:96)
at com.microsoft.azure.sdk.iot.device.auth.IotHubX509SoftwareAuthenticationProvider.getSSLContext(IotHubX509SoftwareAuthenticationProvider.java:56)
... 7 more
Caused by: java.security.UnrecoverableKeyException: Encrypt Private Key failed: password has been cleared
at java.base/sun.security.pkcs12.PKCS12KeyStore.encryptPrivateKey(PKCS12KeyStore.java:951)
at java.base/sun.security.pkcs12.PKCS12KeyStore.setKeyEntry(PKCS12KeyStore.java:641)
... 14 more
Caused by: java.lang.IllegalStateException: password has been cleared
at java.base/javax.crypto.spec.PBEKeySpec.getPassword(PBEKeySpec.java:196)
at org.bouncycastle.jcajce.provider.symmetric.util.BCPBEKey.getPassword(Unknown Source)
at java.base/com.sun.crypto.provider.PKCS12PBECipherCore.implInit(PKCS12PBECipherCore.java:268)
at java.base/com.sun.crypto.provider.PKCS12PBECipherCore.implInit(PKCS12PBECipherCore.java:379)
at java.base/com.sun.crypto.provider.PKCS12PBECipherCore.implInit(PKCS12PBECipherCore.java:364)
at java.base/com.sun.crypto.provider.PKCS12PBECipherCore$PBEWithSHA1AndDESede.engineInit(PKCS12PBECipherCore.java:473)
at java.base/javax.crypto.Cipher.implInit(Cipher.java:847)
at java.base/javax.crypto.Cipher.chooseProvider(Cipher.java:901)
at java.base/javax.crypto.Cipher.init(Cipher.java:1576)
at java.base/javax.crypto.Cipher.init(Cipher.java:1507)
at java.base/sun.security.pkcs12.PKCS12KeyStore.encryptPrivateKey(PKCS12KeyStore.java:934)
... 15 more

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请帮助解决此问题

自Java 9以来，默认密钥库类型已从jks更改为pkcs12。上面的azure SDK代码似乎可以与JKS密钥库一起正常工作。 您有两个选择：

在java 11 jdk/jre安装中，将java.security文件中的keystore.type更改为jks。这将对所有应用程序产生更广泛的影响。所以要小心

如果已从github克隆azure示例的完整repo，请更改com.microsoft.azure.sdk.iot.deps.auth.IotHubSSLContext.generateSSLContextWithKeys（），并获取JKS密钥库的实例，而不是默认实例。因此，改变：

KeyStore KeyStore=KeyStore.getInstance（KeyStore.getDefaultType（））

到

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这很有希望为您提供帮助。

正在执行的代码是：

私有静态字符串publicKeyCertificateString=----开始证书------\r\n“+”XXXX\r\n“+”----结束证书------；私有静态字符串privateKeyString=“----开始私钥------\r\n“+”XXXX\r\n“+”-----结束私钥------\r\n“字符串连接字符串=“主机名=”；DeviceId=；x509=true“IoTubClientProtocol=IoTubClientProtocol.MQTT；DeviceClient=new DeviceClient（connectionString，protocol，publicKeyCertificateString，false，privateKeyString，false）；client.open（）；

KeyStore keystore = KeyStore.getInstance("jks");