Corda toLedgerTransaction（）中的KotlinNullPointerException
当我尝试使用Corda toLedgerTransaction（）中的KotlinNullPointerException,corda,Corda,当我尝试使用txBuilder.toLedgerTransaction（getServiceHub（））时，我得到KotlinNullPointerException的原因是什么？我使用了verify（），然后我意识到问题出在toLedgerTransaction（）。当我向State添加新字段时，出现了这个问题。他们有co.paralleluniverse.common.util.Pair类型，我认为序列化存在一些问题。错误消息： "stackTrace": [ { "
txBuilder.toLedgerTransaction（getServiceHub（））verify（）co.paralleluniverse.common.util.Pair"stackTrace": [
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"localizedMessage": "kotlin.KotlinNullPointerException: net.corda.core.contracts.TransactionState -> data(net.corda.core.contracts.ContractState) -> null",
"message": "kotlin.KotlinNullPointerException: net.corda.core.contracts.TransactionState -> data(net.corda.core.contracts.ContractState) -> null",
"suppressed": []
堆栈跟踪以通过CordaRPCOps的流调用结束，因此它没有用处 我相信您正在实现验证事务的旧语法。在Corda的更高版本中，
TransactionBuilderverify（）// Build the transaction, add the output state and the command to the transaction.
TransactionBuilder transactionBuilder = new TransactionBuilder(notary)
.addOutputState(output)
.addCommand(new AssetContract.Commands.CreateAsset(),
Arrays.asList(getOurIdentity().getOwningKey())); // Required Signers
// Verify the transaction
transactionBuilder.verify(getServiceHub());
您能发布完整的堆栈跟踪吗？：）@Joel I已更新。您要打电话到哪里？它是流动的吗？如果是这样，您是如何开始流程的？