通过合约开发，合约编译，SDK配置与业务开发构建了一个基于FISCO BCOS联盟区块链的应用。
官网：开发第一个区块链应用 — FISCO BCOS 2.0 v2.11.0 文档 (fisco-bcos-documentation.readthedocs.io)
CSDN：FISCO BCOS开发第一个区块链应用--小白实战_fisco bcos 前后端开发-CSDN博客
一、智能合约编写
1、设计智能合约
1.1 存储设计
1.2 接口设计
按照业务的设计目标，需要实现资产注册，转账，查询功能，对应功能的接口如下：
// 查询资产金额
function select(string account) public constant returns(int256, uint256)
// 资产注册
function register(string account, uint256 amount) public returns(int256)
// 资产转移
function transfer(string from_asset_account, string to_asset_account, uint256 amount) public returns(int256)
2、开发合约
2.1 安装JDK以及IntelliJ IDEA开发环境
2.2 下载官方源码
cd ~/fisco curl -#LO https://osp-1257653870.cos.ap-guangzhou.myqcloud.com/FISCO-BCOS/FISCO-BCOS/tools/asset-app.tar.gz # 解压得到Java工程项目asset-app tar -zxf asset-app.tar.gz
将asset-app项目从ubunte系统挪到window本地，然后用IntelliJ IDEA打开
以下是基于官方源码进行修改
2.2 代码结构
|-- build.gradle // gradle配置文件
|-- gradle
| |-- wrapper
| |-- gradle-wrapper.jar // 用于下载Gradle的相关代码实现
| |-- gradle-wrapper.properties // wrapper所使用的配置信息，比如gradle的版本等信息
|-- gradlew // Linux或者Unix下用于执行wrapper命令的Shell脚本
|-- gradlew.bat // Windows下用于执行wrapper命令的批处理脚本
|-- src
| |-- main
| | |-- java
| | | |-- org
| | | |-- fisco
| | | |-- bcos
| | | |-- asset
| | | |-- client // 放置客户端调用类
| | | |-- AssetClient.java
| | | |-- contract // 放置Java合约类
| | | |-- Asset.java
| | |-- resources
| | |-- conf
| | |-- ca.crt
| | |-- node.crt
| | |-- node.key
| | |-- sdk.crt
| | |-- sdk.key
| | |-- sdk.publickey
| | |-- applicationContext.xml // 项目配置文件
| | |-- contract.properties // 存储部署合约地址的文件
| | |-- log4j.properties // 日志配置文件
| | |-- contract //存放solidity约文件
| | |-- Asset.sol
| | |-- Table.sol
| |-- test
| |-- resources // 存放代码资源文件
| |-- conf
| |-- ca.crt
| |-- node.crt
| |-- node.key
| |-- sdk.crt
| |-- sdk.key
| |-- sdk.publickey
| |-- applicationContext.xml // 项目配置文件
| |-- contract.properties // 存储部署合约地址的文件
| |-- log4j.properties // 日志配置文件
| |-- contract //存放solidity约文件
| |-- Asset.sol
| |-- Table.sol
|
|-- tool
|-- asset_run.sh // 项目运行脚本2.3 配置build.gradle依赖包
apply plugin: 'maven'
apply plugin: 'java'
apply plugin: 'eclipse'
sourceCompatibility = 1.8
targetCompatibility = 1.8
[compileJava, compileTestJava, javadoc]*.options*.encoding = 'UTF-8'
// In this section you declare where to find the dependencies of your project
repositories {
mavenCentral()
maven {
allowInsecureProtocol = true
url "http://maven.aliyun.com/nexus/content/groups/public/"
}
maven {
allowInsecureProtocol = true
url "https://oss.sonatype.org/content/repositories/snapshots"
}
}
List logger = [
'org.slf4j:slf4j-log4j12:1.7.32'
]
def spring_version = "5.3.17"
List spring = [
"org.springframework:spring-core:$spring_version",
"org.springframework:spring-beans:$spring_version",
"org.springframework:spring-context:$spring_version",
"org.springframework:spring-tx:$spring_version",
]
// In this section you declare the dependencies for your production and test code
dependencies {
testImplementation group: 'junit', name: 'junit', version: '4.12'
implementation ('org.fisco-bcos.java-sdk:fisco-bcos-java-sdk:2.9.1')
implementation spring
compile logger
runtime logger
compile ("org.fisco-bcos.java-sdk:fisco-bcos-java-sdk:2.9.0")
compile spring
}
jar {
destinationDir file('dist/apps')
archiveName project.name + '.jar'
exclude '**/*.xml'
exclude '**/*.properties'
exclude '**/*.crt'
exclude '**/*.key'
doLast {
copy {
from configurations.runtime
into 'dist/lib'
}
copy {
from file('src/test/resources/')
into 'dist/conf'
}
copy {
from file('tool/')
into 'dist/'
}
copy {
from file('src/test/resources/contract')
into 'dist/contract'
}
}
}
2.4 创建配置文件applicationContext.xml
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
<bean id="defaultConfigProperty" class="org.fisco.bcos.sdk.config.model.ConfigProperty">
<property name="cryptoMaterial">
<map>
<entry key="certPath" value="conf" />
<!-- SSL certificate configuration -->
<!-- entry key="caCert" value="conf/ca.crt" /-->
<!-- entry key="sslCert" value="conf/sdk.crt" /-->
<!-- entry key="sslKey" value="conf/sdk.key" /-->
<!-- GM SSL certificate configuration -->
<!-- entry key="caCert" value="conf/gm/gmca.crt" /-->
<!-- entry key="sslCert" value="conf/gm/gmsdk.crt" /-->
<!-- entry key="sslKey" value="conf/gm/gmsdk.key" /-->
<!--entry key="enSslCert" value="conf/gm/gmensdk.crt" /-->
<!--entry key="enSslKey" value="conf/gm/gmensdk.key" /-->
</map>
</property>
<property name="network">
<map>
<entry key="peers">
<list>
<value>127.0.0.1:20200</value>
<value>127.0.0.1:20201</value>
</list>
</entry>
</map>
</property>
<!--
<property name="amop">
<list>
<bean id="amopTopic1" class="org.fisco.bcos.sdk.config.model.AmopTopic">
<property name="topicName" value="PrivateTopic1" />
<property name="password" value="" />
<property name="privateKey" value="" />
<property name="publicKeys">
<list>
<value>conf/amop/consumer_public_key_1.pem</value>
</list>
</property>
</bean>
</list>
</property>
-->
<property name="account">
<map>
<entry key="keyStoreDir" value="account" />
<entry key="accountAddress" value="" />
<entry key="accountFileFormat" value="pem" />
<entry key="password" value="" />
<entry key="accountFilePath" value="" />
</map>
</property>
<property name="threadPool">
<map>
<entry key="channelProcessorThreadSize" value="16" />
<entry key="receiptProcessorThreadSize" value="16" />
<entry key="maxBlockingQueueSize" value="102400" />
</map>
</property>
</bean>
<bean id="defaultConfigOption" class="org.fisco.bcos.sdk.config.ConfigOption">
<constructor-arg name="configProperty">
<ref bean="defaultConfigProperty"/>
</constructor-arg>
</bean>
<bean id="bcosSDK" class="org.fisco.bcos.sdk.BcosSDK">
<constructor-arg name="configOption">
<ref bean="defaultConfigOption"/>
</constructor-arg>
</bean>
</beans>
2.5 Java合约Asset .class
package org.fisco.bcos.asset.contract;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.fisco.bcos.sdk.abi.FunctionReturnDecoder;
import org.fisco.bcos.sdk.abi.TypeReference;
import org.fisco.bcos.sdk.abi.datatypes.Event;
import org.fisco.bcos.sdk.abi.datatypes.Function;
import org.fisco.bcos.sdk.abi.datatypes.Type;
import org.fisco.bcos.sdk.abi.datatypes.Utf8String;
import org.fisco.bcos.sdk.abi.datatypes.generated.Int256;
import org.fisco.bcos.sdk.abi.datatypes.generated.Uint256;
import org.fisco.bcos.sdk.abi.datatypes.generated.tuples.generated.Tuple1;
import org.fisco.bcos.sdk.abi.datatypes.generated.tuples.generated.Tuple2;
import org.fisco.bcos.sdk.abi.datatypes.generated.tuples.generated.Tuple3;
import org.fisco.bcos.sdk.client.Client;
import org.fisco.bcos.sdk.contract.Contract;
import org.fisco.bcos.sdk.crypto.CryptoSuite;
import org.fisco.bcos.sdk.crypto.keypair.CryptoKeyPair;
import org.fisco.bcos.sdk.eventsub.EventCallback;
import org.fisco.bcos.sdk.model.CryptoType;
import org.fisco.bcos.sdk.model.TransactionReceipt;
import org.fisco.bcos.sdk.model.callback.TransactionCallback;
import org.fisco.bcos.sdk.transaction.model.exception.ContractException;
@SuppressWarnings("unchecked")
public class Asset extends Contract {
public static final String[] BINARY_ARRAY = {
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};
public static final String BINARY = String.join("", BINARY_ARRAY);
public static final String[] SM_BINARY_ARRAY = {
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"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};
public static final String SM_BINARY = String.join("", SM_BINARY_ARRAY);
public static final String[] ABI_ARRAY = {
"[{\"constant\":false,\"inputs\":[{\"name\":\"from_account\",\"type\":\"string\"},{\"name\":\"to_account\",\"type\":\"string\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"int256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"account\",\"type\":\"string\"},{\"name\":\"asset_value\",\"type\":\"uint256\"}],\"name\":\"register\",\"outputs\":[{\"name\":\"\",\"type\":\"int256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"string\"}],\"name\":\"select\",\"outputs\":[{\"name\":\"\",\"type\":\"int256\"},{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"ret\",\"type\":\"int256\"},{\"indexed\":true,\"name\":\"account\",\"type\":\"string\"},{\"indexed\":true,\"name\":\"asset_value\",\"type\":\"uint256\"}],\"name\":\"RegisterEvent\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"ret\",\"type\":\"int256\"},{\"indexed\":true,\"name\":\"from_account\",\"type\":\"string\"},{\"indexed\":true,\"name\":\"to_account\",\"type\":\"string\"},{\"indexed\":true,\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"TransferEvent\",\"type\":\"event\"}]"
};
public static final String ABI = String.join("", ABI_ARRAY);
public static final String FUNC_TRANSFER = "transfer";
public static final String FUNC_REGISTER = "register";
public static final String FUNC_SELECT = "select";
public static final Event REGISTEREVENT_EVENT =
new Event(
"RegisterEvent",
Arrays.<TypeReference<?>>asList(
new TypeReference<Int256>() {},
new TypeReference<Utf8String>(true) {},
new TypeReference<Uint256>(true) {}));;
public static final Event TRANSFEREVENT_EVENT =
new Event(
"TransferEvent",
Arrays.<TypeReference<?>>asList(
new TypeReference<Int256>() {},
new TypeReference<Utf8String>(true) {},
new TypeReference<Utf8String>(true) {},
new TypeReference<Uint256>(true) {}));;
protected Asset(String contractAddress, Client client, CryptoKeyPair credential) {
super(getBinary(client.getCryptoSuite()), contractAddress, client, credential);
}
public static String getBinary(CryptoSuite cryptoSuite) {
return (cryptoSuite.getCryptoTypeConfig() == CryptoType.ECDSA_TYPE ? BINARY : SM_BINARY);
}
public TransactionReceipt transfer(String from_account, String to_account, BigInteger amount) {
final Function function =
new Function(
FUNC_TRANSFER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(from_account),
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(to_account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(amount)),
Collections.<TypeReference<?>>emptyList());
return executeTransaction(function);
}
public void transfer(
String from_account, String to_account, BigInteger amount, TransactionCallback callback) {
final Function function =
new Function(
FUNC_TRANSFER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(from_account),
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(to_account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(amount)),
Collections.<TypeReference<?>>emptyList());
asyncExecuteTransaction(function, callback);
}
public String getSignedTransactionForTransfer(
String from_account, String to_account, BigInteger amount) {
final Function function =
new Function(
FUNC_TRANSFER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(from_account),
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(to_account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(amount)),
Collections.<TypeReference<?>>emptyList());
return createSignedTransaction(function);
}
public Tuple3<String, String, BigInteger> getTransferInput(
TransactionReceipt transactionReceipt) {
String data = transactionReceipt.getInput().substring(10);
final Function function =
new Function(
FUNC_TRANSFER,
Arrays.<Type>asList(),
Arrays.<TypeReference<?>>asList(
new TypeReference<Utf8String>() {},
new TypeReference<Utf8String>() {},
new TypeReference<Uint256>() {}));
List<Type> results = FunctionReturnDecoder.decode(data, function.getOutputParameters());
return new Tuple3<String, String, BigInteger>(
(String) results.get(0).getValue(),
(String) results.get(1).getValue(),
(BigInteger) results.get(2).getValue());
}
public Tuple1<BigInteger> getTransferOutput(TransactionReceipt transactionReceipt) {
String data = transactionReceipt.getOutput();
final Function function =
new Function(
FUNC_TRANSFER,
Arrays.<Type>asList(),
Arrays.<TypeReference<?>>asList(new TypeReference<Int256>() {}));
List<Type> results = FunctionReturnDecoder.decode(data, function.getOutputParameters());
return new Tuple1<BigInteger>((BigInteger) results.get(0).getValue());
}
public TransactionReceipt register(String account, BigInteger asset_value) {
final Function function =
new Function(
FUNC_REGISTER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(asset_value)),
Collections.<TypeReference<?>>emptyList());
return executeTransaction(function);
}
public void register(String account, BigInteger asset_value, TransactionCallback callback) {
final Function function =
new Function(
FUNC_REGISTER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(asset_value)),
Collections.<TypeReference<?>>emptyList());
asyncExecuteTransaction(function, callback);
}
public String getSignedTransactionForRegister(String account, BigInteger asset_value) {
final Function function =
new Function(
FUNC_REGISTER,
Arrays.<Type>asList(
new org.fisco.bcos.sdk.abi.datatypes.Utf8String(account),
new org.fisco.bcos.sdk.abi.datatypes.generated.Uint256(asset_value)),
Collections.<TypeReference<?>>emptyList());
return createSignedTransaction(function);
}
public Tuple2<String, BigInteger> getRegisterInput(TransactionReceipt transactionReceipt) {
String data = transactionReceipt.getInput().substring(10);
final Function function =
new Function(
FUNC_REGISTER,
Arrays.<Type>asList(),
Arrays.<TypeReference<?>>asList(
new TypeReference<Utf8String>() {}, new TypeReference<Uint256>() {}));
List<Type> results = FunctionReturnDecoder.decode(data, function.getOutputParameters());
return new Tuple2<String, BigInteger>(
(String) results.get(0).getValue(), (BigInteger) results.get(1).getValue());
}
public Tuple1<BigInteger> getRegisterOutput(TransactionReceipt transactionReceipt) {
String data = transactionReceipt.getOutput();
final Function function =
new Function(
FUNC_REGISTER,
Arrays.<Type>asList(),
Arrays.<TypeReference<?>>asList(new TypeReference<Int256>() {}));
List<Type> results = FunctionReturnDecoder.decode(data, function.getOutputParameters());
return new Tuple1<BigInteger>((BigInteger) results.get(0).getValue());
}
public Tuple2<BigInteger, BigInteger> select(String account) throws ContractException {
final Function function =
new Function(
FUNC_SELECT,
Arrays.<Type>asList(new org.fisco.bcos.sdk.abi.datatypes.Utf8String(account)),
Arrays.<TypeReference<?>>asList(
new TypeReference<Int256>() {}, new TypeReference<Uint256>() {}));
List<Type> results = executeCallWithMultipleValueReturn(function);
return new Tuple2<BigInteger, BigInteger>(
(BigInteger) results.get(0).getValue(), (BigInteger) results.get(1).getValue());
}
public List<RegisterEventEventResponse> getRegisterEventEvents(
TransactionReceipt transactionReceipt) {
List<Contract.EventValuesWithLog> valueList =
extractEventParametersWithLog(REGISTEREVENT_EVENT, transactionReceipt);
ArrayList<RegisterEventEventResponse> responses =
new ArrayList<RegisterEventEventResponse>(valueList.size());
for (Contract.EventValuesWithLog eventValues : valueList) {
RegisterEventEventResponse typedResponse = new RegisterEventEventResponse();
typedResponse.log = eventValues.getLog();
typedResponse.account = (byte[]) eventValues.getIndexedValues().get(0).getValue();
typedResponse.asset_value = (BigInteger) eventValues.getIndexedValues().get(1).getValue();
typedResponse.ret = (BigInteger) eventValues.getNonIndexedValues().get(0).getValue();
responses.add(typedResponse);
}
return responses;
}
public void subscribeRegisterEventEvent(
String fromBlock, String toBlock, List<String> otherTopics, EventCallback callback) {
String topic0 = eventEncoder.encode(REGISTEREVENT_EVENT);
subscribeEvent(ABI, BINARY, topic0, fromBlock, toBlock, otherTopics, callback);
}
public void subscribeRegisterEventEvent(EventCallback callback) {
String topic0 = eventEncoder.encode(REGISTEREVENT_EVENT);
subscribeEvent(ABI, BINARY, topic0, callback);
}
public List<TransferEventEventResponse> getTransferEventEvents(
TransactionReceipt transactionReceipt) {
List<Contract.EventValuesWithLog> valueList =
extractEventParametersWithLog(TRANSFEREVENT_EVENT, transactionReceipt);
ArrayList<TransferEventEventResponse> responses =
new ArrayList<TransferEventEventResponse>(valueList.size());
for (Contract.EventValuesWithLog eventValues : valueList) {
TransferEventEventResponse typedResponse = new TransferEventEventResponse();
typedResponse.log = eventValues.getLog();
typedResponse.from_account = (byte[]) eventValues.getIndexedValues().get(0).getValue();
typedResponse.to_account = (byte[]) eventValues.getIndexedValues().get(1).getValue();
typedResponse.amount = (BigInteger) eventValues.getIndexedValues().get(2).getValue();
typedResponse.ret = (BigInteger) eventValues.getNonIndexedValues().get(0).getValue();
responses.add(typedResponse);
}
return responses;
}
public void subscribeTransferEventEvent(
String fromBlock, String toBlock, List<String> otherTopics, EventCallback callback) {
String topic0 = eventEncoder.encode(TRANSFEREVENT_EVENT);
subscribeEvent(ABI, BINARY, topic0, fromBlock, toBlock, otherTopics, callback);
}
public void subscribeTransferEventEvent(EventCallback callback) {
String topic0 = eventEncoder.encode(TRANSFEREVENT_EVENT);
subscribeEvent(ABI, BINARY, topic0, callback);
}
public static Asset load(String contractAddress, Client client, CryptoKeyPair credential) {
return new Asset(contractAddress, client, credential);
}
public static Asset deploy(Client client, CryptoKeyPair credential) throws ContractException {
return deploy(Asset.class, client, credential, getBinary(client.getCryptoSuite()), "");
}
public static class RegisterEventEventResponse {
public TransactionReceipt.Logs log;
public byte[] account;
public BigInteger asset_value;
public BigInteger ret;
}
public static class TransferEventEventResponse {
public TransactionReceipt.Logs log;
public byte[] from_account;
public byte[] to_account;
public BigInteger amount;
public BigInteger ret;
}
}
2.6 对合约的部署与调用AssetClient.class
package org.fisco.bcos.asset.client;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.util.List;
import java.util.Properties;
import org.fisco.bcos.asset.contract.Asset;
import org.fisco.bcos.sdk.BcosSDK;
import org.fisco.bcos.sdk.abi.datatypes.generated.tuples.generated.Tuple2;
import org.fisco.bcos.sdk.client.Client;
import org.fisco.bcos.sdk.crypto.keypair.CryptoKeyPair;
import org.fisco.bcos.sdk.model.TransactionReceipt;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
public class AssetClient {
static Logger logger = LoggerFactory.getLogger(AssetClient.class);
private BcosSDK bcosSDK;
private Client client;
private CryptoKeyPair cryptoKeyPair;
public void initialize() throws Exception {
@SuppressWarnings("resource")
ApplicationContext context =
new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
bcosSDK = context.getBean(BcosSDK.class);
client = bcosSDK.getClient(1);
cryptoKeyPair = client.getCryptoSuite().createKeyPair();
client.getCryptoSuite().setCryptoKeyPair(cryptoKeyPair);
logger.debug("create client for group1, account address is " + cryptoKeyPair.getAddress());
}
public void deployAssetAndRecordAddr() {
try {
Asset asset = Asset.deploy(client, cryptoKeyPair);
System.out.println(
" deploy Asset success, contract address is " + asset.getContractAddress());
recordAssetAddr(asset.getContractAddress());
} catch (Exception e) {
// TODO Auto-generated catch block
// e.printStackTrace();
System.out.println(" deploy Asset contract failed, error message is " + e.getMessage());
}
}
public void recordAssetAddr(String address) throws FileNotFoundException, IOException {
Properties prop = new Properties();
prop.setProperty("address", address);
final Resource contractResource = new ClassPathResource("contract.properties");
FileOutputStream fileOutputStream = new FileOutputStream(contractResource.getFile());
prop.store(fileOutputStream, "contract address");
}
public String loadAssetAddr() throws Exception {
// load Asset contact address from contract.properties
Properties prop = new Properties();
final Resource contractResource = new ClassPathResource("contract.properties");
prop.load(contractResource.getInputStream());
String contractAddress = prop.getProperty("address");
if (contractAddress == null || contractAddress.trim().equals("")) {
throw new Exception(" load Asset contract address failed, please deploy it first. ");
}
logger.info(" load Asset address from contract.properties, address is {}", contractAddress);
return contractAddress;
}
public void queryAssetAmount(String assetAccount) {
try {
String contractAddress = loadAssetAddr();
Asset asset = Asset.load(contractAddress, client, cryptoKeyPair);
Tuple2<BigInteger, BigInteger> result = asset.select(assetAccount);
if (result.getValue1().compareTo(new BigInteger("0")) == 0) {
System.out.printf(" asset account %s, value %s \n", assetAccount, result.getValue2());
} else {
System.out.printf(" %s asset account is not exist \n", assetAccount);
}
} catch (Exception e) {
// TODO Auto-generated catch block
// e.printStackTrace();
logger.error(" queryAssetAmount exception, error message is {}", e.getMessage());
System.out.printf(" query asset account failed, error message is %s\n", e.getMessage());
}
}
public void registerAssetAccount(String assetAccount, BigInteger amount) {
try {
String contractAddress = loadAssetAddr();
Asset asset = Asset.load(contractAddress, client, cryptoKeyPair);
TransactionReceipt receipt = asset.register(assetAccount, amount);
List<Asset.RegisterEventEventResponse> response = asset.getRegisterEventEvents(receipt);
if (!response.isEmpty()) {
if (response.get(0).ret.compareTo(new BigInteger("0")) == 0) {
System.out.printf(
" register asset account success => asset: %s, value: %s \n", assetAccount, amount);
} else {
System.out.printf(
" register asset account failed, ret code is %s \n", response.get(0).ret.toString());
}
} else {
System.out.println(" event log not found, maybe transaction not exec. ");
}
} catch (Exception e) {
// TODO Auto-generated catch block
// e.printStackTrace();
logger.error(" registerAssetAccount exception, error message is {}", e.getMessage());
System.out.printf(" register asset account failed, error message is %s\n", e.getMessage());
}
}
public void transferAsset(String fromAssetAccount, String toAssetAccount, BigInteger amount) {
try {
String contractAddress = loadAssetAddr();
Asset asset = Asset.load(contractAddress, client, cryptoKeyPair);
TransactionReceipt receipt = asset.transfer(fromAssetAccount, toAssetAccount, amount);
List<Asset.TransferEventEventResponse> response = asset.getTransferEventEvents(receipt);
if (!response.isEmpty()) {
if (response.get(0).ret.compareTo(new BigInteger("0")) == 0) {
System.out.printf(
" transfer success => from_asset: %s, to_asset: %s, amount: %s \n",
fromAssetAccount, toAssetAccount, amount);
} else {
System.out.printf(
" transfer asset account failed, ret code is %s \n", response.get(0).ret.toString());
}
} else {
System.out.println(" event log not found, maybe transaction not exec. ");
}
} catch (Exception e) {
// TODO Auto-generated catch block
// e.printStackTrace();
logger.error(" registerAssetAccount exception, error message is {}", e.getMessage());
System.out.printf(" register asset account failed, error message is %s\n", e.getMessage());
}
}
public static void Usage() {
System.out.println(" Usage:");
System.out.println(
"\t java -cp conf/:lib/*:apps/* org.fisco.bcos.asset.client.AssetClient deploy");
System.out.println(
"\t java -cp conf/:lib/*:apps/* org.fisco.bcos.asset.client.AssetClient query account");
System.out.println(
"\t java -cp conf/:lib/*:apps/* org.fisco.bcos.asset.client.AssetClient register account value");
System.out.println(
"\t java -cp conf/:lib/*:apps/* org.fisco.bcos.asset.client.AssetClient transfer from_account to_account amount");
System.exit(0);
}
public static void main(String[] args) throws Exception {
if (args.length < 1) {
Usage();
}
AssetClient client = new AssetClient();
client.initialize();
switch (args[0]) {
case "deploy":
client.deployAssetAndRecordAddr();
break;
case "query":
if (args.length < 2) {
Usage();
}
client.queryAssetAmount(args[1]);
break;
case "register":
if (args.length < 3) {
Usage();
}
client.registerAssetAccount(args[1], new BigInteger(args[2]));
break;
case "transfer":
if (args.length < 4) {
Usage();
}
client.transferAsset(args[1], args[2], new BigInteger(args[3]));
break;
default:
{
Usage();
}
}
System.exit(0);
}
}
2.7 添加一个调用AssetClient的脚本
#!/bin/bash
function usage()
{
echo " Usage : "
echo " bash asset_run.sh deploy"
echo " bash asset_run.sh query asset_account "
echo " bash asset_run.sh register asset_account asset_amount "
echo " bash asset_run.sh transfer from_asset_account to_asset_account amount "
echo " "
echo " "
echo "examples : "
echo " bash asset_run.sh deploy "
echo " bash asset_run.sh register Asset0 10000000 "
echo " bash asset_run.sh register Asset1 10000000 "
echo " bash asset_run.sh transfer Asset0 Asset1 11111 "
echo " bash asset_run.sh query Asset0"
echo " bash asset_run.sh query Asset1"
exit 0
}
case $1 in
deploy)
[ $# -lt 1 ] && { usage; }
;;
register)
[ $# -lt 3 ] && { usage; }
;;
transfer)
[ $# -lt 4 ] && { usage; }
;;
query)
[ $# -lt 2 ] && { usage; }
;;
*)
usage
;;
esac
java -Djdk.tls.namedGroups="SM2,secp256k1,x25519,secp256r1,secp384r1,secp521r1" -cp 'apps/*:conf/:lib/*' org.fisco.bcos.asset.client.AssetClient $@
2.8 配置log4j.properties
#
# Copyright 2014-2020 [fisco-dev]
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
# in compliance with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed under the License
# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
# or implied. See the License for the specific language governing permissions and limitations under
# the License.
#
#
### set log levels ###
log4j.rootLogger=DEBUG, file
### output the log information to the file ###
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.DatePattern='_'yyyyMMddHH'.log'
log4j.appender.file.File=./log/sdk.log
log4j.appender.file.Append=true
log4j.appender.file.filter.traceFilter=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C{1}.%M(%L) | %m%n
###output the log information to the console ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C{1}.%M(%L) | %m%n
2.9 创建一个空的contract.properties文件
3、运行
3.1 切换到项目目录
cd asset-app
3.2编译项目
./gradlew build
3.3 将代码从window挪到linux
3.4 部署合约
# 进入dist目录
cd dist
bash asset_run.sh deploy
3.5 注册资产
给张三注册资产10万元
bash asset_run.sh register zhangsan 100000
注册成功，张三拥有资产10万元
同上，也给Bob注册资产10万元
bash asset_run.sh register Bob 100000
注册成功，Bob拥有资产10万元
3.6 查询资产
查询张三的资产有多少
bash asset_run.sh query zhangsan
张三拥有10万资产
Bob同上。
bash asset_run.sh query Bob
3.7 资产转移
张三转给张五 5万 块
bash asset_run.sh transfer zhangsan Bob 50000
转移成功
检查张三还剩多少钱
bash asset_run.sh query zhangsan
张三还剩 5 万。
检查Bob还有多少钱
bash asset_run.sh query Bob
张五有 15 万
总结： 至此，我们通过合约开发，合约编译，SDK配置与业务开发构建了一个基于FISCO BCOS联盟区块链的应用。
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