IllegalFlowLogicException:无法为FlowLogic构造FlowLogicRef [英] IllegalFlowLogicException: A FlowLogicRef cannot be constructed for FlowLogic

问题描述

在我的Corda中，我试图使用RPC调用流，但是在进行调用以初始化流时却出现此错误:

In my Corda I am trying to call a flow using RPC but I am getting this error while making the call to initiate the flow:

net.corda.core.flows.IllegalFlowLogicException:FlowLogicRef无法 为类型的FlowLogic构造 com.example.flow.PolicyFlow $ Initiator:由于缺少构造函数 参数:[class com.example.state.PolicyState]

net.corda.core.flows.IllegalFlowLogicException: A FlowLogicRef cannot be constructed for FlowLogic of type com.example.flow.PolicyFlow$Initiator: due to missing constructor for arguments: [class com.example.state.PolicyState]

我的流程显示在下面的代码段中:

My Flow is shown in the snippet below:

 public SignedTransaction call() throws FlowException {
        class SignTxFlow extends SignTransactionFlow {
            private SignTxFlow(FlowSession otherPartyFlow, ProgressTracker progressTracker) {
                super(otherPartyFlow, progressTracker);
            }

            @Override
            protected void checkTransaction(SignedTransaction stx) {
                requireThat(require -> {
                    ContractState output = stx.getTx().getOutputs().get(0).getData();
                    require.using("This must be an Policy transaction.", output instanceof PolicyState);
                    PolicyState policy = (PolicyState) output;
                    require.using("I won't accept Policy without a first Name.", (!(policy.getFirstName().equals(""))));
                    return null;
                });
            }
        }

        return subFlow(new SignTxFlow(otherPartyFlow, SignTransactionFlow.Companion.tracker()));
    }

RPC连接和启动流程的功能如下:

The Function for RPC Connection and initiating the flow is given below:

有人可以帮我吗?

推荐答案

请检查PolicyFlow$Initiator类的构造函数构造函数不匹配:您正在发送policy，但是构造函数期望其他内容，如我所见您在注释中提供的代码.该类中没有接受策略状态的构造函数.您有一个包含10个字段的构造函数.

Please check the constructor of PolicyFlow$Initiator Class there is a mismatch in constructor: you are sending policy but the constructor expects something else as I can see in code you provided in comments. there is no constructor in that class that accepts a policy state. You've a constructor with 10 fields.

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