部署及调用HelloWorld合约 ## 3.3.1 第一步. 编写HelloWorld合约 HelloWorld合约提供两个接口，分别是get()和set()，用于获取/设置合约变量name。合约内容如下： ```javascript pragma solidity ^0.4.24; contract HelloWorld { string name; function HelloWorld() { BCOS Java SDK的引用。 ```javascript repositories { mavenCentral() maven { url "http://maven.aliyun.com/nexus/content/groups/public/" ``` （下页继续） （续上页） ```javascript } maven { asset = Asset.load(contractAddress, client, cryptoKeyPair); - 接口调用 使用合约对象调用对应的接口，处理返回结果。 ```javascript // select接口调用 Tuple2 result = asset.select(assetAccount); // register接口调用

# 并键入wq保存退出。 ``` Asset.sol的内容如下： pragma solidity ^0.4.24; import "./Table.sol"; ```javascript contract Asset { // event event RegisterEvent(int256 ret, string account, uint256 asset_value); % ## 第三步. 引入FISCO BCOS Java SDK 在build.gradle文件中的dependencies下加入对FISCO BCOS Java SDK的引用。 ```javascript repositories { mavenCentral() maven { allowInsecureProtocol = true url "http://maven asset = Asset.load(contractAddress, client, cryptoKeyPair); ## 接口调用 使用合约对象调用对应的接口，处理返回结果。 ```javascript // select接口调用 Tuple2 result = asset.select(assetAccount); // register接口调用

# 并键入wq保存退出。 ``` Asset.sol的内容如下： pragma solidity ^0.4.24; import "./Table.sol"; ```javascript contract Asset { // event event RegisterEvent(int256 ret, string account, uint256 asset_value); % ## 第三步. 引入FISCO BCOS Java SDK 在build.gradle文件中的dependencies下加入对FISCO BCOS Java SDK的引用。 ```javascript repositories { mavenCentral() maven { url "http://maven.aliyun.com/nex asset = Asset.load(contractAddress, client, cryptoKeyPair); ## 接口调用 使用合约对象调用对应的接口，处理返回结果。 ```javascript // select接口调用 Tuple2 result = asset.select(assetAccount); // register接口调用

# 创建Asset.sol合约文件 vi Asset.sol # 将Assert.sol合约内容写入。 # 并键入wq保存退出。 ``` Asset.sol的内容如下： ```javascript pragma solidity ^0.4.24; import "./Table.sol"; contract Asset { // event event asset = Asset.load(contractAddress, client, cryptoKeyPair); ## 接口调用 使用合约对象调用对应的接口，处理返回结果。 ```javascript // select接口调用 Tuple2 result = asset.select(assetAccount); // register接口调用 时存放合约地址。  ```javascript dependencies { testCompile group: 'junit', name: 'junit', version: '4

here [https://github.com/hyperledger/fabric-samples/blob/release-2.2/assettransfer-basic/chaincode-javascript/lib/assetTransfer.js#L67], where you can see a smart contract transaction that creates a new asset: prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, Go, or Java. The legal and technical skills required to convert centuries of legal language into secured -ccl - the programming language of the chaincode to deploy: go (default), java, javascript, typescript -ccv - chaincode version.1.0 (default) -ccs - chaincode definition

prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, Go, or Java. The legal and technical skills required to convert centuries of legal language into secured -ccl - the programming language of the chaincode to deploy: go →(default), java, javascript, typescript -ccv - chaincode version.1.0 (default) -ccs - chaincode definition -s couchdb -i 2.0.0 network.sh createChannel -c channelName network.sh deployCC -ccn basic -ccl javascript From inside the test-network directory, run the following command to remove any containers or

at fabcar.js here [https://github.com/hyperledger/fabric- samples/blob/master/chaincode/fabcar/javascript/lib/fabcar.js#L93], where you can see a smart contract transaction that creates a new car: async prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, Go, or Java. The legal and technical skills required to convert centuries of legal language into to 3) -l - the programming language of the chaincode to deploy: go (default), java, javascript, typescript -v - chaincode version. Must be a round number, 1, 2, 3, etc -i

look at fabcar.js [https://github.com/hyperledger/fabric- samples/blob/master/chaincode/fabcar/javascript/lib/fabcar.js#L93], where you can see a smart contract transaction that creates a new car: async prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, Go, or Java. The legal and technical skills required to convert centuries of legal language into to 3) -l - the programming language of the chaincode to deploy: go (default), java, javascript, typescript -v - chaincode version. Must be a round number, 1, 2, 3, etc -i

prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, GOLANG or Java. The legal and technical skills required to convert centuries of legal language (defaults to 3) -l - the programming language of the chaincode to deploy: go (default), ˓→ javascript, or java (continues on next page) 128 Chapter 5. Getting Started hyperledger-fabricdocs Documentation -c mychannel -s couchdb -i 2.0.0 network.sh createChannel -c channelName network.sh deployCC -l javascript From inside the test-network directory, run the following command to remove any containers or artifacts

fabcar.js here [https://github.com/hyperledger/fabric-samples/blob/release-2.0/chaincode/fabcar/javascript/lib/fabcar.js#L93], where you can see a smart contract transaction that creates a new car: async prices or delivery conditions, and express it as a smart contract in a programming language such as JavaScript, GOLANG or Java. The legal and technical skills required to convert centuries of legal language (defaults to 3) -l - the programming language of the chaincode to deploy: go (default), javascript, or java -v - chaincode version. Must be a round number, 1, 2, 3, etc -i -