corda

问题 I Started with cordapp set up. I am able to build corapp-example as in the set up instruction. To test when I opened above link its not working? Should I do any other set up 回答1: This is a bug in the docs that is being addressed. When running via IntelliJ, the webports for the nodes are http://localhost:10009/, http://localhost:10012/ and http://localhost:10015/. 来源： https://stackoverflow.com/questions/50228037/why-http-localhost10007-web-example-is-giving-empty-response-in-corda

问题 I have the problem in Corda regarding performing IOU from Party A to Party B. Below is configuration detail: 3 node.conf [Party A, Party B, and Notary ]. Hosting application in AWS, So in node config file instead of "localhost", I gave the IP of the machines. I gave the same IP for Notary & Party A, different for Party B. Network Bootstrapping was successful and moved the newly created node folders respective EC2 instances and started run nodes. But when performed the IOU from Party A to

问题 I am trying to run the Example CorDapp (https://github.com/corda/cordapp-example) on Corda 3. When I try to run the ./gradlew deployNodes step, I get the following error: Execution failed for task ':java-source:deployNodes'. > Node in Notary exited with 1 when generating its node-info - see logs in [REDACTED]/cordapp-example/java-source/build/nodes/Notary/logs * Try: Run with --info and --debug option to get more log output. * Exception is: org.gradle.api.tasks.TaskExecutionException:

问题 Can we add/remove participant in the subsequent transaction if the original transaction does not have it. I have party A which has created one transaction and added a participant Party B. The state created in the transaction is shared with Party B. There are state properties like FirstName, LastName and Status. Party B changes the status to green and then the transaction is completed and recorded to vault of Party B and Party A. The same process is followed between Party A and Party C. The

问题 I have been using H2 database in Corda demo application, I would like to know, if we can plug-in some other relatioal database such as Oracle, Sybase etc instead of H2 database. If yes, please share relevent link to do the same. Thanks 回答1: Yes it is possible to use other databases - for example we have accepted and merged a community contribution to use PostgreSQL: https://github.com/corda/corda/pull/1525 . However, at this stage, we are only supporting other relational databases in the

问题 I am trying to deploy IRS demo application on windows server, I have installed java already: C:\Users\Administrator>java -version java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) Client VM (build 25.181-b13, mixed mode) I am getting following exception for node: CAPSULE EXCEPTION: Could not find Java installation for requested version [Min. Java version: 1.8.0 JavaVersion: null Min. update version: {1.8=171}] (JDK required: false). You can

问题 I am creating a flow to fetch signatures from CollectSignaturesFlow of other party and I am facing the below issue in log. @InitiatingFlow @StartableByRPC public static class BGInitiator extends FlowLogic<SignedTransaction> { private final Party manufacturer; private final Party regulator; private final String bgData; public BGInitiator(Party manufacturer,Party regulator, String bgData) { this.manufacturer = manufacturer; this.regulator = regulator; this.bgData = bgData; } private final Step

问题 Since non-validating notaries in Corda are not performing input/output state validation of a transaction, how does a notary service know that a transaction initiator is allowed to consume specific input states? For instance, in this simple cash example: State0{} -issueCashTX-> State1{owner:issuer, amount: 1000} -transferTX-> State2{owner:issuer, amount: 500} State3{owner:CompanyA, amount: 500} Smart Contract Rules validate that transfer transactions are only valid, if input state is owner by

问题 i*m using Corda 4.0 RC1 and have a clone of the cash-issuer repository; there i have a Corda-ResponderFlow which should do a business test; currently it throws an exception; the flow is programmed in this way class ReceiveBankAccount(val otherSession: FlowSession) : FlowLogic<Unit>() { @Suspendable override fun call() { logger.info("Starting ReceiveBankAccount flow...") val signedTransactionFlow = object : SignTransactionFlow(otherSession) { @Suspendable override fun checkTransaction(stx:

问题 I am getting the error below: Step 1: serviceHub.jdbcSession().prepareStatement("Query") Step 2: I have executed the step1. Step 3: I am getting the data I needed. but also I am getting the below exception also. com.esotericsoftware.kryo.KryoException: java.lang.UnsupportedOperationException: com.zaxxer.hikari.pool.HikariProxyPreparedStatement, which is a closeable resource, has been detected during flow checkpointing. Restoring such resources across node restarts is not supported. Make sure