我使用fabrc-sdk-java操作e2e_cli网络。e2e使用CA并禁用了TLS。
我成功创建了频道并安装了链码。
创建频道：
Channel newChannel = client.newChannel(myChannel.getChannelName(), orderer, channelConfiguration, channelConfigurationSignatures.toArray(new byte[myPeerOrgs.size()][]));
channelConfigurationSignatures包含来自两个组织的签名。
安装链码：
每个组织都必须使用自己的peerAdmin组织发送一次安装建议。
参考：https://github.com/IBM/blockchain-application-using-fabric-java-sdk
但是，当我准备实例化chaincode时，出现错误：
0endorser failed with Sending proposal to peer0.org1.example.com failed because of: gRPC failure=Status{code=UNKNOWN, description=Failed to deserialize creator identity, err MSP Org1 is unknown, cause=null}. Was verified:false
这些是相关代码：
client.setUserContext(myPeerOrgs.get(0).getPeerAdmin());
InstantiateProposalRequest instantiateProposalRequest = client.newInstantiationProposalRequest();
instantiateProposalRequest.setProposalWaitTime(fabricConfig.getProposalWaitTime());
instantiateProposalRequest.setChaincodeID(chaincodeID);
instantiateProposalRequest.setFcn(ininFun);
instantiateProposalRequest.setArgs(args);
Map<String, byte[]> tm = new HashMap<>();
tm.put("HyperLedgerFabric", "InstantiateProposalRequest:JavaSDK".getBytes(UTF_8));
tm.put("method", "InstantiateProposalRequest".getBytes(UTF_8));
instantiateProposalRequest.setTransientMap(tm);
ChaincodeEndorsementPolicy chaincodeEndorsementPolicy = new ChaincodeEndorsementPolicy();
chaincodeEndorsementPolicy.fromYamlFile(new File(myChaincode.getChaincodeEndorsementPolicyPath()));
instantiateProposalRequest.setChaincodeEndorsementPolicy(chaincodeEndorsementPolicy);
logger.trace("Sending instantiateProposalRequest to all peers with arguments: " + Arrays.toString(args));
Collection<ProposalResponse> successful = new LinkedList<>();
Collection<ProposalResponse> failed = new LinkedList<>();
Collection<ProposalResponse> responses = channel.sendInstantiationProposal(instantiateProposalRequest);
for (ProposalResponse response : responses) {
if (response.isVerified() && response.getStatus() == ProposalResponse.Status.SUCCESS) {
successful.add(response);
logger.trace(String.format("Succesful instantiate proposal response Txid: %s from peer %s", response.getTransactionID(), response.getPeer().getName()));
} else {
failed.add(response);
}
}
logger.trace(String.format("Received %d instantiate proposal responses. Successful+verified: %d . Failed: %d", responses.size(), successful.size(), failed.size()));
if (failed.size() > 0) {
ProposalResponse first = failed.iterator().next();
logger.error("Not enough endorsers for instantiate :" + successful.size() + "endorser failed with " + first.getMessage() + ". Was verified:" + first.isVerified());
System.exit(1);
}
我认为这是一个序列化问题，但是MyUser类和MyEnrollement类都继承了Serializable接口，并且都定义了serialVersionUID。
我已经比较了blockchain-application-using-fabric-java-sdk，但尚未发现问题。
答案 0 :(得分：0)
我终于解决了这个问题。问题在以下代码中：
Channel newChannel = client.newChannel(myChannel.getChannelName(), orderer, channelConfiguration, channelConfigurationSignatures.toArray(new byte[myPeerOrgs.size()][]));
上面的代码是我根据End2endIT编写的：
//Create channel that has only one signer that is this orgs peer admin. If channel creation policy needed more signature they would need to be added too.
Channel newChannel = client.newChannel(name, anOrderer, channelConfiguration, client.getChannelConfigurationSignature(channelConfiguration, sampleOrg.getPeerAdmin()));
我不知道我的用法是否有误，但是我的代码中有此错误，稍后再加入节点时会报告该错误。
我引用了https://github.com/IBM/blockchain-application-using-fabric-java-sdk/blob/master/java/src/main/java/org/app/network/CreateChannel.java，并找到了正确的写作方式。
public Channel createChannel() {
logger.info("Begin create channel: " + myChannel.getChannelName());
ChannelConfiguration channelConfiguration = new ChannelConfiguration(new File(fabricConfig.getChannelArtifactsPath() + "/" + myChannel.getChannelName() + ".tx"));
logger.trace("Read channel " + myChannel.getChannelName() + " configuration file：" + fabricConfig.getChannelArtifactsPath() + "/" + myChannel.getChannelName() + ".tx");
byte[] channelConfigurationSignatures = client.getChannelConfigurationSignature(channelConfiguration, myPeerOrgs.get(0).getPeerAdmin());
Channel newChannel = client.newChannel(myChannel.getChannelName(), orderer, channelConfiguration, channelConfigurationSignatures);;
for (Peer peer : myPeerOrgs.get(0).getPeers()) {
// create a channel for the first time, only `joinPeer` here, not `addPeer`
newChannel.joinPeer(peer);
}
for (EventHub eventHub : myPeerOrgs.get(0).getEventHubs()) {
newChannel.addEventHub(eventHub);
}
if (!newChannel.isInitialized()) {
newChannel.initialize();
}
// I have only tested two organizations
// I don’t know if there are any errors in the three organizations.
for (int i = 1; i < myPeerOrgs.size(); i++) {
client.setUserContext(myPeerOrgs.get(i).getPeerAdmin());
newChannel = client.getChannel(myChannel.getChannelName());
for (Peer peer : myPeerOrgs.get(i).getPeers()) {
newChannel.joinPeer(peer);
}
for (EventHub eventHub : myPeerOrgs.get(i).getEventHubs()) {
newChannel.addEventHub(eventHub);
}
}
logger.trace("Node that has joined the channel：");
Collection<Peer> peers = newChannel.getPeers();
for (Peer peer : peers) {
logger.trace(peer.getName() + " at " + peer.getUrl());
}
logger.info("Success, end create channel: " + myChannel.getChannelName() + "\n");
return newChannel;
}
以后的相关代码，例如安装和初始化chaincode，也请参考https://github.com/IBM/blockchain-application-using-fabric-java-sdk。这是一个很好的例子。
如果有人知道如何使用newChannel的第四个变量参数，请告诉我。谢谢。
最后，我不知道如何动态地加入节点，组织和渠道，我正在寻找和测试，网络上只有nodejs的示例，没有java，如果有人知道，请告诉我，我真的需要。谢谢。