我刚刚克隆了r3corda bootcamp-cordapp，从 https:/github.comcordabootcamp-cordapp。 并按照《》中提到的设置 训练营视频.测试ProjectImportedOKTest已经成功运行，但当我尝试StateTests时，却出现了以下异常。我可以确认net.i2p.crypto.eddsa.KeyPairGenerator在classpath中（eddsa-0.2.0.jar）。
java.security.NoSuchAlgorithmException: class configured for KeyPairGenerator (provider: BC) cannot be found.
at java.security.Provider$Service.getImplClass(Provider.java:1649)
at java.security.Provider$Service.newInstance(Provider.java:1592)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:236)
at sun.security.jca.GetInstance.getInstance(GetInstance.java:218)
at java.security.KeyPairGenerator.getInstance(KeyPairGenerator.java:315)
at net.corda.core.crypto.Crypto.generateKeyPair(Crypto.kt:674)
at net.corda.testing.core.TestIdentity.<init>(TestUtils.kt:145)
at net.corda.testing.core.TestIdentity.<init>(TestUtils.kt:144)
at net.corda.testing.core.TestIdentity.<init>(TestUtils.kt)
at bootcamp.StateTests.<init>(StateTests.java:12)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217)
at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:40)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.Iterator.forEachRemaining(Iterator.java:116)
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80)
at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:71)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)
Caused by: java.lang.ClassNotFoundException: net.i2p.crypto.eddsa.KeyPairGenerator
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.security.Provider$Service.getImplClass(Provider.java:1636)
... 51 more
下面是我的StateTests.java类。
package bootcamp;
import net.corda.core.contracts.ContractState;
import net.corda.core.identity.CordaX500Name;
import net.corda.core.identity.Party;
import net.corda.testing.core.TestIdentity;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class StateTests {
private final Party alice = new TestIdentity(new CordaX500Name("Alice", "", "GB")).getParty();
private final Party bob = new TestIdentity(new CordaX500Name("Bob", "", "GB")).getParty();
@Test
public void tokenStateHasIssuerOwnerAndAmountParamsOfCorrectTypeInConstructor() {
new TokenState(alice, bob, 1);
}
//rest of the lines are commented
}
下面是我的TokenState.java类。
package bootcamp;
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 org.jetbrains.annotations.NotNull;
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 {
private Party owner;
private Party issuer;
private int amount;
public TokenState(Party owner, Party issuer, int amount) {
this.issuer = issuer;
this.owner = owner;
this.amount = amount;
}
}
我在InteliJIdea（视频中提到的IDE是InteliJ）中也运行了这个测试，但得到的是同样的异常。我的java版本是
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)