fabric2.2 test-network通过fabric-j

在idea中新建sprint-boot项目

https://github.com/wilesanGH/test-network-java-sdk
项目结构如下：

QQ图片20210112214009.png

• pom.xml中引用

        <dependency>
            <groupId>org.hyperledger.fabric-sdk-java</groupId>
            <artifactId>fabric-sdk-java</artifactId>
            <version>1.4.7</version>
        </dependency>

        <dependency>
            <groupId>org.hyperledger.fabric</groupId>
            <artifactId>fabric-gateway-java</artifactId>
            <version>2.2.0</version>
        </dependency>

• 新建connection.json

{
  "name": "basic-network",
  "version": "1.0.0",
  "dependencies": {
  },
  "client": {
    "organization": "Org1",
    "connection": {
      "timeout": {
        "peer": {
          "endorser": "300"
        },
        "orderer": "300"
      }
    }
  },
  "channels": {
    "mychannel": {
      "orderers": [
        "orderer.example.com"
      ],
      "peers": {
        "peer0.org1.example.com": {
          "endorsingPeer": true,
          "chaincodeQuery": true,
          "ledgerQuery": true,
          "eventSource": true
        },
        "peer0.org2.example.com": {
          "endorsingPeer": true,
          "chaincodeQuery": true,
          "ledgerQuery": true,
          "eventSource": true
        }
      }
    }
  },
  "organizations": {
    "Org1": {
      "mspid": "Org1MSP",
      "peers": [
        "peer0.org1.example.com"
      ],
      "certificateAuthorities": [
        "ca-org1"
      ],
      "adminPrivateKeyPEM": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore/priv_sk"
      },
      "signedCertPEM": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/signcerts/Admin@org1.example.com-cert.pem"
      }
    },
    "Org2": {
      "mspid": "Org2MSP",
      "peers": [
        "peer0.org2.example.com"
      ],
      "certificateAuthorities": [
        "ca-org2"
      ],
      "adminPrivateKeyPEM": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp/keystore/priv_sk"
      },
      "signedCertPEM": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp/signcerts/Admin@org2.example.com-cert.pem"
      }
    }
  },
  "orderers": {
    "orderer.example.com": {
      "url": "grpcs://192.168.33.100:7050",
      "mspid": "OrdererMSP",
      "grpcOptions": {
        "ssl-target-name-override": "orderer.example.com",
        "hostnameOverride": "orderer.example.com"
      },
      "tlsCACerts": {
        "path": "src/main/resources/crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/ca.crt"
      },
      "adminPrivateKeyPEM": {
        "path": "src/main/resources/crypto-config/ordererOrganizations/example.com/users/Admin@example.com/msp/keystore/priv_sk"
      },
      "signedCertPEM": {
        "path": "src/main/resources/crypto-config/ordererOrganizations/example.com/users/Admin@example.com/msp/signcerts/Admin@example.com-cert.pem"
      }
    }
  },
  "peers": {
    "peer0.org1.example.com": {
      "url": "grpcs://192.168.33.100:7051",
      "grpcOptions": {
        "ssl-target-name-override": "peer0.org1.example.com",
        "hostnameOverride": "peer0.org1.example.com",
        "request-timeout": 120001
      },
      "tlsCACerts": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt"
      }
    },
    "peer0.org2.example.com": {
      "url": "grpcs://192.168.33.100:9051",
      "grpcOptions": {
        "ssl-target-name-override": "peer0.org2.example.com",
        "hostnameOverride": "peer0.org2.example.com",
        "request-timeout": 120001
      },
      "tlsCACerts": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt"
      }
    }
  },
  "certificateAuthorities": {
    "ca-org1": {
      "url": "https://192.168.33.100:7054",
      "grpcOptions": {
        "verify": true
      },
      "tlsCACerts": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org1.example.com/ca/ca.org1.example.com-cert.pem"
      },
      "registrar": [
        {
          "enrollId": "admin",
          "enrollSecret": "adminpw"
        }
      ]
    },
    "ca-org2": {
      "url": "https://192.168.33.100:8054",
      "grpcOptions": {
        "verify": true
      },
      "tlsCACerts": {
        "path": "src/main/resources/crypto-config/peerOrganizations/org2.example.com/ca/ca.org2.example.com-cert.pem"
      },
      "registrar": [
        {
          "enrollId": "admin",
          "enrollSecret": "adminpw"
        }
      ]
    }
  }
}

这个就是test-network默认搭建的网络结构，其中的192.168.33.100是我之前的虚机的ip,之间在Vagrantfile中设置的。这里在的各种证书的路径就是resource下面的crypto-config下面的两个文件，这两个peerOrganizations 和 orderOrganizations是test-network启动以后，在test-network目录下的organizations目录下面的文件，直接copy过来。放在crypto-config中。

• 创建fabric.config.properties

# 网络配置
networkConfigPath = src/main/resources/connection.json
#证书路径
certificatePath = src/main/resources/crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/signcerts/User1@org1.example.com-cert.pem
# 私钥路径
privateKeyPath = src/main/resources/crypto-config/peerOrganizations/org1.example.com/users/User1@org1.example.com/msp/keystore/priv_sk

# 通道名称
channelName = mychannel

# 合约名称
#contractName = hello
contractName = basic

• TestApplication.java

package com.fabric.test;

import org.hyperledger.fabric.gateway.*;
import org.hyperledger.fabric.sdk.Peer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.EnumSet;
import java.util.Properties;

@SpringBootApplication
public class TestApplication {

    public static void main(String[] args) {
        //SpringApplication.run(TestApplication.class, args);

        try {
            //获取相应参数
            Properties properties = new Properties();
            InputStream inputStream = TestApplication.class.getResourceAsStream("/fabric.config.properties");
            properties.load(inputStream);

            String networkConfigPath = properties.getProperty("networkConfigPath");
            String channelName = properties.getProperty("channelName");
            String contractName = properties.getProperty("contractName");
            //使用org1中的user1初始化一个网关wallet账户用于连接网络
            String certificatePath = properties.getProperty("certificatePath");
            X509Certificate certificate = readX509Certificate(Paths.get(certificatePath));

            String privateKeyPath = properties.getProperty("privateKeyPath");
            PrivateKey privateKey = getPrivateKey(Paths.get(privateKeyPath));

            Wallet wallet = Wallets.newInMemoryWallet();
            wallet.put("user1", Identities.newX509Identity("Org1MSP",certificate,privateKey));

            //根据connection.json 获取Fabric网络连接对象
            Gateway.Builder builder = Gateway.createBuilder()
                    .identity(wallet, "user1")
                    .networkConfig(Paths.get(networkConfigPath));
            //连接网关
            Gateway gateway = builder.connect();
            //获取通道
            Network network = gateway.getNetwork(channelName);
            //获取合约对象
            Contract contract = network.getContract(contractName);
            /*******自己编写****************/
            Contract contract1 = network.getContract("integral");
            byte[] queryAllPic = contract1.evaluateTransaction("GetAllIntegrals");
            System.out.println("所有图片："+new String(queryAllPic, StandardCharsets.UTF_8));

            /***********************************/
            //查询现有资产
            //注意更换调用链码的具体函数
            byte[] queryAllAssets = contract.evaluateTransaction("GetAllAssets");
            System.out.println("所有资产："+new String(queryAllAssets, StandardCharsets.UTF_8));

            // 增加新的资产
            byte[] invokeResult = contract.createTransaction("CreateAsset")
                    .setEndorsingPeers(network.getChannel().getPeers(EnumSet.of(Peer.PeerRole.ENDORSING_PEER)))
                    .submit("asset8","blue","20","Klay","88");
                    //.submit("asset5", "LaoWang", "666");
            System.out.println(new String(invokeResult, StandardCharsets.UTF_8));

            //查询更新后的资产
            byte[] queryAllAssetsAfter = contract.evaluateTransaction("GetAllAssets");
            System.out.println("更新资产："+new String(queryAllAssetsAfter, StandardCharsets.UTF_8));

            //查询单个资产
            byte[] queryOneAsset = contract.createTransaction("ReadAsset")
                    .submit("asset8");
            System.out.println("更新资产："+new String(queryOneAsset, StandardCharsets.UTF_8));

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    private static X509Certificate readX509Certificate(final Path certificatePath) throws IOException, CertificateException {
        try (Reader certificateReader = Files.newBufferedReader(certificatePath, StandardCharsets.UTF_8)) {
            return Identities.readX509Certificate(certificateReader);
        }
    }

    private static PrivateKey getPrivateKey(final Path privateKeyPath) throws IOException, InvalidKeyException {
        try (Reader privateKeyReader = Files.newBufferedReader(privateKeyPath, StandardCharsets.UTF_8)) {
            return Identities.readPrivateKey(privateKeyReader);
        }
    }


}

这个是主程序，先就通过这些配置文件找到证书、通道等再调用通道里面的合约。这里面只写了部分的方法调用，可根据上一节的内容，调用更多的方法。