fisco Java-sdk 快速入门案例

1.安装环境(Ubantu)

Linux IDEA下载: https://blog.csdn.net/JOJO_jiongjiong/article/details/123087307

Linux Maven下载: https://zhuanlan.zhihu.com/p/443389963

最好在setting.xml 把maven本地仓库也改一下。

Linux java( 8-14都可以)下载:https://blog.csdn.net/baoqiaoben/article/details/78936955

2.搭建区块链

单机4节点区块链网络搭建: https://blog.csdn.net/Qhx20040819/article/details/131909957

3.开发智能合约应用

1. 使用 IDEA 创建一个Maven应用

2.引入 fisco java sdk

 <!--	fisco sdk-->
        <dependency>
            <groupId>org.fisco-bcos.java-sdk</groupId>
            <artifactId>fisco-bcos-java-sdk</artifactId>
            <version>2.9.1</version>
        </dependency>

3. 配置SDK证书

将节点的sdk证书拷贝到resources目录下面。

# 假设SDK证书位于~/fisco/nodes/127.0.0.1/sdk/目录
mkdir -p conf && cp -r ~/fisco/nodes/127.0.0.1/sdk/* conf

4. 将合约生成对应的java 文件

我们用拉取fisco 的控制台里默认带的HelloWorld合约来演示。

在 console/目录下

若控制台版本大于等于2.8.0：

# 使用sol2java.sh将contracts/solidity下的所有合约编译产生bin,abi,java工具类。
# 当前目录~/fisco/console
$ bash sol2java.sh -p org.com.fisco
# 以上命令中参数“org.com.fisco”是指定产生的java类所属的包名。
# 通过命令./sol2java.sh -h可查看该脚本使用方法

若控制台版本小于2.8.0：

# 使用sol2java.sh将contracts/solidity下的所有合约编译产生bin,abi,java工具类。
# 当前目录~/fisco/console
$ bash sol2java.sh org.com.fisco
# 以上命令中参数“org.com.fisco”是指定产生的java类所属的包名。
# ./sol2java.sh [packageName] [solidityFilePath] [javaCodeOutputDir]

查看编译结果

$ ls contracts/sdk/java/org/com/fisco 
# 得到返回
# HelloWorld.java		KVTableTest.java	ShaTest.java		Table.java		TableTest.java

将该java 文件移动到你的java项目里。

PS :注意,生成java文件包名要跟你项目里对应的包名要一致。

5. 创建配置文件

PS :我直接从文档粘贴的，详情请见:配置说明 — FISCO BCOS v2 v2.9.0 文档

[cryptoMaterial]

certPath = "conf"                           # The certification path

# The following configurations take the certPath by default if commented
# caCert = "conf/ca.crt"                    # CA cert file path
                                            # If connect to the GM node, default CA cert path is ${certPath}/gm/gmca.crt

# sslCert = "conf/sdk.crt"                  # SSL cert file path
                                            # If connect to the GM node, the default SDK cert path is ${certPath}/gm/gmsdk.crt

# sslKey = "conf/sdk.key"                   # SSL key file path
                                            # If connect to the GM node, the default SDK privateKey path is ${certPath}/gm/gmsdk.key

# enSslCert = "conf/gm/gmensdk.crt"         # GM encryption cert file path
                                            # default load the GM SSL encryption cert from ${certPath}/gm/gmensdk.crt

# enSslKey = "conf/gm/gmensdk.key"          # GM ssl cert file path
                                            # default load the GM SSL encryption privateKey from ${certPath}/gm/gmensdk.key

[network]
peers=["127.0.0.1:20200", "127.0.0.1:20201"]    # The peer list to connect

# AMOP configuration
# You can use following two methods to configure as a private topic message sender or subscriber.
# Usually, the public key and private key is generated by subscriber.
# Message sender receive public key from topic subscriber then make configuration.
# But, please do not config as both the message sender and the subscriber of one private topic, or you may send the message to yourself.

# Configure a private topic as a topic message sender.
# [[amop]]
# topicName = "PrivateTopic"
# publicKeys = [ "conf/amop/consumer_public_key_1.pem" ]    # Public keys of the nodes that you want to send AMOP message of this topic to.

# Configure a private topic as a topic subscriber.
# [[amop]]
# topicName = "PrivateTopic"
# privateKey = "conf/amop/consumer_private_key.p12"         # Your private key that used to subscriber verification.
# password = "123456"


[account]
keyStoreDir = "account"         # The directory to load/store the account file, default is "account"
# accountFilePath = ""          # The account file path (default load from the path specified by the keyStoreDir)
accountFileFormat = "pem"       # The storage format of account file (Default is "pem", "p12" as an option)

# accountAddress = ""           # The transactions sending account address
                                # Default is a randomly generated account
                                # The randomly generated account is stored in the path specified by the keyStoreDir

# password = ""                 # The password used to load the account file

[threadPool]
# channelProcessorThreadSize = "16"         # The size of the thread pool to process channel callback
                                            # Default is the number of cpu cores

# receiptProcessorThreadSize = "16"         # The size of the thread pool to process transaction receipt notification
                                            # Default is the number of cpu cores

maxBlockingQueueSize = "102400"             # The max blocking queue size of the thread pool

将该配置文件也移动到conf同级目录。

6. 使用测试文件部署和调用智能合约

public class BcosSDKTest
{
    // 获取配置文件路径
    public final String configFile = BcosSDKTest.class.getClassLoader().getResource("config.toml").getPath();

    public  void testClient() throws ConfigException, ContractException {
        // 初始化BcosSDK
        BcosSDK sdk =  BcosSDK.build(configFile);
        // 为群组1初始化client
        Client client = sdk.getClient(Integer.valueOf(1));

        // 获取群组1的块高
        BlockNumber blockNumber = client.getBlockNumber();

        // 向群组1部署HelloWorld合约
        CryptoKeyPair cryptoKeyPair = client.getCryptoSuite().getCryptoKeyPair();
        HelloWorld helloWorld = HelloWorld.deploy(client, cryptoKeyPair);

        // 调用HelloWorld合约的get接口
        String getValue = helloWorld.get();

        // 调用HelloWorld合约的set接口
        TransactionReceipt receipt = helloWorld.set("Hello, fisco");
    }


    public static void main(String[] args) throws ContractException, ConfigException {
        BcosSDKTest bcosSDKTest =  new BcosSDKTest();
        bcosSDKTest.testClient();
    }
}

运行之后，控制台出现如此效果，代表成功:

fisco Java-sdk 快速入门案例

1.安装环境(Ubantu)

2.搭建区块链

3.开发智能合约应用

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