FlowStarter 类型中的方法 startFlow

Question

为了测试我的 CorDapp，我使用了 API 的说明：测试文档和cordapp-template-java 项目中的 FlowTest.java 文件。您将在下面找到我的代码。我对这个StartedNodeServices.startFlow()功能很挣扎。文档指出它应该接受 a FlowLogic<T>，这将是我的示例中的类的实例InitiatorFlow。然而，测试文档显示了两个输入。下面的代码会导致以下错误：The method startFlow(FlowLogic<? extends T>, InvocationContext) in the type FlowStarter is not applicable for the arguments (ServiceHub, InitiatorFlow)我不知道如何处理这个问题，因为测试文档中显示的第一个输入不是 FlowLogic。如果我切换参数，也会发生同样的错误。也许你可以给我一些如何处理这个问题的提示。感谢您的帮助！package com.template;import com.google.common.collect.ImmutableList;import com.template.flows.InitiatorFlow;import com.template.flows.Responder;import com.template.states.MyState;import net.corda.core.concurrent.CordaFuture;import net.corda.core.context.InvocationContext;import net.corda.core.flows.InitiatedBy;import net.corda.core.identity.AbstractParty;import net.corda.core.identity.CordaX500Name;import net.corda.core.transactions.SignedTransaction;import net.corda.testing.node.MockNetwork;import net.corda.testing.node.MockNetworkParameters;import net.corda.testing.node.StartedMockNode;import net.corda.testing.node.TestCordapp;import org.junit.After;import org.junit.Before;import org.junit.Test;import net.corda.node.services.api.StartedNodeServices;import net.corda.node.services.statemachine.ExternalEvent.ExternalStartFlowEvent;import net.corda.node.services.api.StartedNodeServices.*;public class FlowTests {    private final MockNetwork network = new MockNetwork(new MockNetworkParameters(ImmutableList.of(        TestCordapp.findCordapp("com.template.contracts"),        TestCordapp.findCordapp("com.template.flows")    )));    private final StartedMockNode alice = network.createPartyNode(new CordaX500Name("Alice", "London", "GB"));    private final StartedMockNode bob = network.createPartyNode(new CordaX500Name("Bob", "Paris", "FR"));    public FlowTests() {        alice.registerInitiatedFlow(InitiatorFlow.class);        bob.registerInitiatedFlow(InitiatorFlow.class);    }

Answer 1

可以使用以下测试方法修复此问题：

public void dummyTest() throws InterruptedException, ExecutionException {

       InitiatorFlow flow = new InitiatorFlow(5, 100, bob.getInfo().getLegalIdentitiesAndCerts().get(0).getParty()); 

       CordaFuture<SignedTransaction> future = alice.startFlow(flow);

        network.runNetwork();

        SignedTransaction signedTransaction = future.get();

    }

确保InitiatorFlow延伸FlowLogic <SignedTransaction>.