Notary 无法安装 Corda 服务

Question

我试图通过在我的应用程序中添加 r3 提供的 toolkit 作为 corrdapp 依赖项，在我的解决方案中配置业务网络运营商服务。我能够构建应用程序，但是当我运行节点时，我收到 Notary 错误

更新

我正在添加日志

    [ERROR] 2020-09-04T14:21:15,399Z [main] internal.Node. - Unable to install Corda service com.r3.businessnetworks.membership.flows.bno.service.BNOConfigurationService -  [errorCode=dfc7g6, moreInformationAt=https://errors.corda.net/OS/4.5/dfc7g6]
java.lang.reflect.InvocationTargetException: null
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_201]
    [...]
    at net.corda.node.Corda.main(Corda.kt:13) ~[corda-node-4.5.jar:?]
Caused by: java.lang.NullPointerException
    at com.r3.businessnetworks.membership.flows.ConfigUtils.loadConfig(ConfigUtils.kt:16) ~[?:?]
    at com.r3.businessnetworks.membership.flows.bno.service.BNOConfigurationService.<init>(BNOConfigurationService.kt:21) ~[?:?]
    ... 33 more
[ERROR] 2020-09-04T14:21:15,458Z [main] internal.NodeStartupLogging. - Exception during node startup -  [errorCode=dfc7g6, moreInformationAt=https://errors.corda.net/OS/4.5/dfc7g6]
java.lang.reflect.InvocationTargetException: null
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_201]
    [...]
    at net.corda.cliutils.CordaCliWrapperKt.start(CordaCliWrapper.kt:89) ~[corda-tools-cliutils-4.5.jar:?]
    at net.corda.node.Corda.main(Corda.kt:13) ~[corda-node-4.5.jar:?]
Caused by: java.lang.NullPointerException
    at com.r3.businessnetworks.membership.flows.ConfigUtils.loadConfig(ConfigUtils.kt:16) ~[?:?]
    at com.r3.businessnetworks.membership.flows.bno.service.BNOConfigurationService.<init>(BNOConfigurationService.kt:21) ~[?:?]
    ... 33 more

Answer 1

您缺少此 CorDapp 的配置文件，如 here 所述；你必须：

1. 在节点的cordapps 文件夹（即node-folder/cordapps/config）内创建一个config 文件夹。
2. 在该文件夹中创建一个membership-service.conf 文件。
3. 在该文件中添加：

   // Whitelist of accepted BNOs. Attempt to communicate to not whitelisted 
   // BNO would result into an exception
   bnoWhitelist = ["O=BNO,L=New York,C=US", "O=BNO,L=London,C=GB"]
   
   // Name of the notary to use for BNO transactions such as membership approval
   notaryName = "O=Notary,L=Longon,C=GB"
   

您使用的 CorDapp 依赖于配置文件（上述 3 个步骤创建该文件），当它丢失时会导致 NullPointerException。要了解有关 CorDapp 配置文件的更多信息，请阅读my article。

顺便说一句，根据this；您使用的 CorDapp 将于 2020 年 9 月 31 日弃用。