如何解决 - bootcamp-cordapp 中的 NotSerializableException。测试合约时

Question

我正在尝试运行 corda-bootcamp 合同测试用例。我按照视频中的说明进行操作，但是在尝试运行合同测试时 - 我收到错误消息

java.io.NotSerializableException: data(net.corda.core.contracts.ContractState) -> Trying to build an object serializer for bootcamp.TokenState, but it is not constructible from its public properties, and so requires a custom serialiser.

谁能帮忙，如何解决这个问题？我发现了一个类似的问题 - here ，但这没有用。

下面是使用的Tokenstate，

package bootcamp;

import com.google.common.collect.ImmutableList;
import net.corda.core.contracts.BelongsToContract;
import net.corda.core.contracts.ContractState;
import net.corda.core.identity.AbstractParty;
import net.corda.core.identity.Party;

import java.util.ArrayList;
import java.util.List;

/* Our state, defining a shared fact on the ledger.
 * See src/main/java/examples/ArtState.java for an example. */
@BelongsToContract(TokenContract.class)
public class TokenState implements ContractState {

    private Party issuer;
    private Party owner;
    private int amount;

    public TokenState(Party issuer, Party owner, int amount) {
        this.issuer = issuer;
        this.owner = owner;
        this.amount = amount;
    }

    public Party getIssuer() {
        return issuer;
    }

    public Party getOwner() {
        return owner;
    }

    public int getAmount() {
        return amount;
    }

    public List<AbstractParty> getParticipants() {
        List<AbstractParty> participants = new ArrayList<>();
        participants.add(issuer);
        participants.add(owner);
        return participants;
    }
}

抛出错误的测试用例，

private final TestIdentity alice = new TestIdentity(new CordaX500Name("Alice", "", "GB"));
    private final TestIdentity bob = new TestIdentity(new CordaX500Name("Bob", "", "GB"));
    private MockServices ledgerServices = new MockServices(new TestIdentity(new CordaX500Name("TestId", "", "GB")));

    private TokenState tokenState = new TokenState(alice.getParty(), bob.getParty(), 1);

@Test
public void tokenContractRequiresZeroInputsInTheTransaction() {
        transaction(ledgerServices, tx -> {
            // Has an input, will fail.
            tx.input(TokenContract.ID, tokenState);
            tx.output(TokenContract.ID, tokenState);
            tx.command(Arrays.asList(alice.getPublicKey(), bob.getPublicKey()), new TokenContract.Commands.Issue());
            tx.fails();
            return null;
        });

        transaction(ledgerServices, tx -> {
            // Has no input, will verify.
            tx.output(TokenContract.ID, tokenState);
            tx.command(Arrays.asList(alice.getPublicKey(), bob.getPublicKey()), new TokenContract.Commands.Issue());
            tx.verifies();
            return null;
        });
    }

Answer 1

Corda 使用自己的序列化框架，这需要 Java 编译器在生成字节码时保留参数名称，以便以后可以正确地重新创建对象。

要与 IntelliJ 一起使用，请执行以下操作：

打开设置：
- Windows: 文件 -> 设置
- osX/Ubuntu：IntelliJ IDEA -> 首选项
转到构建、执行、部署 -> 编译器 -> Java 编译器在 Additional command line parameters 字段中写入 -parameters

完全重建项目（构建 -> 重建项目）

如何解决 - bootcamp-cordapp 中的 NotSerializableException。测试合约时

How to resolve - NotSerializableException in bootcamp-cordapp. When testing Contract

java

corda

bootcamp