基于以太坊智能合约平台搭建

客官°小女子只卖身不卖艺 2022-05-25 09:08 248阅读 0赞

本文是作者亲自搭建的过程，写的相对比较粗糙，实测可用:  
安装操作操作步骤请参考一下博客  
https://zhuanlan.zhihu.com/p/27106175  
https://zhuanlan.zhihu.com/p/32911405

执行机器路径为  
root@ubuntu2:/opt/eth/test\#

//执行命令，制造创世区块

geth --datadir "./data0" init genesis.json  
  
//执行一条最简单的geth命令，来创建自己的私有链条。这也是进入geth客户端的命令。  
geth --datadir "./data0" --nodiscover console 2>>geth.log  
  
//输入命令eth.accounts, 我们会发现返回值为\[\]  
输入命令personal.newAccount("xxx"), 该命令将创造一个新的用户，该用户的密码是xxx. 当然用户也可以将xxx 改为123,或者123456，或者任意密码  
  
//查看日志  
tail -f geth.log  
  
//启动挖  
miner.setEtherbase(eth.accounts\[0\])  
miner.start()  
  
//查看是否在工作  
eth.mining  
true （true表示在工作）  
  
//进入已经存在的JS窗口  
>geth attach "/opt/eth/test/data0/geth.ipc"  
  
//查看已经存在的节点  
>eth.accounts\[0\]  
"0xcafacf0d849e50a1bd01b32e7944661df3338aa4"  
  
//查看区块高度  
>eth.blockNumber  
  
//查看节点中的wei数量  
> eth.getBalance(eth.accounts\[0\])  
  
//查看节点中的eth数量  
web3.fromWei(eth.getBalance(eth.accounts\[0\]))  
  
//wei和eth进行转换  
Wei –> Ether: web3.fromWei  
> web3.fromWei(10000000000000000)  
"0.01"  
  
//添加节点  
当另外的节点完成上述步骤后就可以开始添加节点了。在geth console中输入：admin.addPeer(“”)，在双引号中输入要连接的节点信息。节点信息通过在geth console中输入命令admin得到，enode项的信息就是节点的地址。  
  
//进行转账  
1.首先停止  
miner.stop()  
2.保证有2个以上地址，给两个地址赋值  
user1=eth.accounts\[0\]  
user2=eth.accounts\[1\]  
3.解锁user1  
personal.unlockAccount(user1)  
  
4.将user1转给user2，转3个，单位为ether  
eth.sendTransaction(\{from:user1,to:user2,value:web3.toWei(3,"ether")\})  
  
//智能合约1

//此时一直让挖矿，执行打包  
miner.start()

//验证输入一个值返回为值乘以8 、

a\_demotypes.f.call(100)

//智能合约2

//将以下拷贝到geth中
        var helloContract = web3.eth.contract([{"constant":false,"inputs":[{"name":"a","type":"uint256"}],"name":"main","outputs":[{"name":"b","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"}]);
        var hello = helloContract.new(
           {
             from: web3.eth.accounts[0],
             data: '0x6060604052341561000f57600080fd5b60b68061001d6000396000f300606060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff168063ab3ae255146044575b600080fd5b3415604e57600080fd5b606260048080359060200190919050506078565b6040518082815260200191505060405180910390f35b600080600883029050809150509190505600a165627a7a723058203f6d4f506de85c5287b58705788b98694a2b14b17fd6db0c376260b4a0b5a7a00029',
             gas: '4700000'
           }, function (e, contract){
            console.log(e, contract);
            if (typeof contract.address !== 'undefined') {
                 console.log('Contract mined! address: ' + contract.address + ' transactionHash: ' + contract.transactionHash);
            }
         })

//此时一直让挖矿，执行打包  
miner.start()  
//验证输入一个值返回为值乘以8

hello.main.call(100)

\---异常信息  
Error: authentication needed: password or unlock undefined  
undefined  
//需要注意，在部署只能合约时，出现如下错误表示账户没解锁。需要执行  personal.unlockAccount(eth.accounts\[0\]) 进行解锁。

显示如下日志信息表示已经正常挖矿

//geth中日志

Contract mined! address: 0x025f940e33084168a3b8f3c2d1ead767126604ac transactionHash: 0xa086fec940265a0ba1ffa07e573b12b6855840f88039ce932efc62fa060a51ec
    null [object Object]
    Contract mined! address: 0x0f74eeac87e2e9fc2f6cad3d3debe427ea1ec264 transactionHash: 0x8161f5011ff947d780befa3028916b7b6282b26b7bf5e06f56c1ce5fa00aab41
    null [object Object]
    Contract mined! address: 0x14c68ba552996c70bebb20033ad9819930578ea4 transactionHash: 0x1d78d9caa9654989cf83dbb019af008f153c7abfdc94779b1d0794aeec0e6a59

//geth.log 中日志

INFO [02-09|16:18:16] ðŸ”¨ mined potential block                  number=7 hash=1a8de5â€¦7be496
    INFO [02-09|16:18:16] Commit new mining work                   number=8 txs=0 uncles=0 elapsed=1.357ms
    INFO [02-09|16:20:43] Submitted contract creation              fullhash=0xa086fec940265a0ba1ffa07e573b12b6855840f88039ce932efc62fa060a51ec contract=0x025F940e33084168a3b8f3C2D1eaD767126604AC
    INFO [02-09|16:37:10] Submitted contract creation              fullhash=0x8161f5011ff947d780befa3028916b7b6282b26b7bf5e06f56c1ce5fa00aab41 contract=0x0F74eEaC87e2e9Fc2F6Cad3D3DEbE427EA1ec264
    INFO [02-09|16:52:58] Submitted contract creation              fullhash=0x1d78d9caa9654989cf83dbb019af008f153c7abfdc94779b1d0794aeec0e6a59 contract=0x14C68Ba552996C70BEbb20033AD9819930578EA4
    INFO [02-09|16:58:03] Regenerated local transaction journal    transactions=3 accounts=1
    INFO [02-09|17:04:32] Successfully sealed new block            number=8 hash=14082aâ€¦1a5cb2