第三章 通过java SDK 实现个性化智能合约的部署与测试

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前提

已经部署好底层，外网可以正常请求访问。

正常流程

1、基础合约处理

https://fisco-bcos-documentation.readthedocs.io/zh_CN/latest/docs/tutorial/sdk_application.html#id2

将官方的Asset.sol 代码copy，使用vim Asset.sol 命令创建，copy 到里面。

上一小节，我们根据业务需求设计了合约Asset.sol的存储与接口，给出了完整实现，但是Java程序无法直接调用Solidity合约，需要先将Solidity合约文件编译为Java文件。

控制台提供了编译工具，可以将Asset.sol合约文件存放在console/contracts/solidity目录。利用console目录下提供的sol2java.sh脚本进行编译，操作如下：

# 切换到fisco/console/目录 $ cd ~/fisco/console/ # 编译合约，后面指定一个Java的包名参数，可以根据实际项目路径指定包名 $ ./sol2java.sh org.fisco.bcos.asset.contract

2、合约转化

用官方的asset_app,自己生成的在sdk 那边用有问题

运行成功之后，将会在console/contracts/sdk目录生成java、abi和bin目录，如下所示。

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java目录下生成了org/fisco/bcos/asset/contract/包路径目录，该目录下包含Asset.java和Table.java两个文件，其中Asset.java是Java应用调用Asset.sol合约需要的文件。

3、SDK配置

我们提供了一个Java工程项目供开发使用，首先获取Java工程项目：

# 获取Java工程项目压缩包 $ cd ~ $ curl -LO https://github.com/FISCO-BCOS/LargeFiles/raw/master/tools/asset-app.tar.gz # 解压得到Java工程项目asset-app目录 $ tar -zxf asset-app.tar.gz

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asset-app项目的目录结构如下：

4、使用sdk进行开发

将asset_app 的sol、指定的合约的java、abi、bin等文件copy 到项目中，使用winscp等软件copy

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5、底层部署和测试

·         编译

# 切换到项目目录 $ cd ~/asset-app # 编译项目 $ ./gradlew build

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编译成功之后，将在项目根目录下生成dist目录。dist目录下有一个asset_run.sh脚本，简化项目运行。现在开始一一验证本文开始定下的需求。

·         部署Asset.sol合约

# 进入dist目录 $ cd dist $ bash asset_run.sh deploy Deploy Asset succesfully, contract address is 0xd09ad04220e40bb8666e885730c8c460091a4775

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·         注册资产

$ bash asset_run.sh register Alice 100000 Register account succesfully=> account: Alice, value: 100000 $ bash asset_run.sh register Bob 100000 Register account succesfully=> account: Bob, value: 100000

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·         查询资产

$ bash asset_run.sh query Alice account Alice, value 100000 $ bash asset_run.sh query Bob account Bob, value 100000

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·         资产转移

$ bash asset_run.sh transfer Alice Bob 50000 Transfer successfully=> from_account: Alice, to_account: Bob, amount: 50000 $ bash asset_run.sh query Alice account Alice, value 50000 $ bash asset_run.sh query Bob account Bob, value 150000

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6、本地编写单元测试

 package customTest;

 import javafx.concurrent.Service;
 import org.fisco.bcos.Application;
 import org.fisco.bcos.solidity.Asset;
 import org.fisco.bcos.temp.HelloWorld;
 import org.fisco.bcos.web3j.crypto.Credentials;
 import org.fisco.bcos.web3j.crypto.gm.GenCredential;
 import org.fisco.bcos.web3j.protocol.Web3j;
 import org.fisco.bcos.web3j.protocol.core.methods.response.TransactionReceipt;
 import org.fisco.bcos.web3j.tuples.generated.Tuple2;
 import org.fisco.bcos.web3j.tx.gas.StaticGasProvider;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.test.context.junit4.SpringRunner;

 import java.math.BigInteger;

 import static org.junit.Assert.assertTrue;

 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = Application.class)
 public class AssetTest {
     private Credentials credentials;
     private static BigInteger gasPrice = new BigInteger("300000000");
     private static BigInteger gasLimit = new BigInteger("300000000");
     @Autowired
     Web3j web3j;

     //这很重要，没有这个无法通过
     @Before
     public void setUp() throws Exception {
        /* credentials =
                 GenCredential.create(
                         "b83261efa42895c38c6c2364ca878f43e77f3cddbc922bf57d0d48070f79feb6");
         if (credentials == null) {
             throw new Exception("create Credentials failed");
         }*/

          credentials = GenCredential.create();
     }

     @After
     public void tearDown() {
     }

     @Test
     public void DoAsset() throws Exception {
         AssetRegisterAndQuery();
         //DeployAsset();

     }
     @Test
     //部署合约
     public void DeployAsset() throws Exception {
         // 部署合约
         Asset asset = Asset.deploy(web3j, credentials, new StaticGasProvider(gasPrice, gasLimit)).send();

         if (asset != null) {
             System.out.println("HelloWorld address is: " + asset.getContractAddress());
         }

     }
     @Test
     //用户注册 资产查询
     public void AssetRegisterAndQuery()throws Exception  {
         String contractAddress = "0xf9343346a8d80c3d2f2026bf72fff3aec48a4133";
         // 加载合约地址
         Asset asset = Asset.load(contractAddress, web3j, credentials, new StaticGasProvider(gasPrice, gasLimit));

         if (asset != null) {
             System.out.println("Asset address is: " + asset.getContractAddress());
             // call set function
             System.out.println("1、注册用户，并注册资产--------------------------------------");
             String assetAccount1="0x608153babb8b00f11523f6b1b2b225ea9e7dfd8b";
             String assetAccount2="0x86f17b879ce121e5d00351a120de0bd39867bf4c";
             // register接口调用
             TransactionReceipt receipt1 = asset.register(assetAccount1, new BigInteger("121210000") ).send();
             TransactionReceipt receipt2 = asset.register(assetAccount2, new BigInteger("121121213") ).send();

             System.out.println("receipt1="+receipt1.toString());
             System.out.println("receipt2="+receipt2.toString());

             System.out.println("2、查询用户资产----------------------------------------------");
             // select接口调用
             Tuple2<BigInteger, BigInteger> result1 = asset.select("abc").send();
             Tuple2<BigInteger, BigInteger> result2 = asset.select("ddd").send();
             System.out.println("Tuple2<BigInteger, BigInteger> result1="+result1.toString());
             System.out.println("Tuple2<BigInteger, BigInteger> result2="+result2.toString());
             //assertTrue("Hello, World!".equals(result));
         }

     }

     // 资产交易
     @Test
     public  void AssetTransfer() throws  Exception{

         String contractAddress = "0xf9343346a8d80c3d2f2026bf72fff3aec48a4133";
         // 加载合约地址
         Asset asset = Asset.load(contractAddress, web3j, credentials, new StaticGasProvider(gasPrice, gasLimit));

         String fromAssetAccount="0x608153babb8b00f11523f6b1b2b225ea9e7dfd8b";
         String  toAssetAccount="0x86f17b879ce121e5d00351a120de0bd39867bf4c";
       BigInteger amount = new BigInteger("121210000");
         if (asset != null) {
             // transfer接口
             TransactionReceipt receipt = asset.transfer( fromAssetAccount,toAssetAccount, amount).send();
             System.out.println("AssetTest.AssetTransfer receipt="+receipt.toString());
         }

     }
 }

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