本文旨在说明通过Geth、Node.js如何访问以太坊节点和UNIX下PHP如何访问以太坊节点。
对于以太坊主网络使用RPC url:http://85.214.51.53:8545
对于Ropsten测试网络使用RPC url:http://85.214.51.53:8546
geth
二进制文件约30MB,geth二进制文件包。geth
目录位置./geth attach rpc:http://85.214.51.53:8545
连接并启动JavaScript环境,参考文档。>
作为输入提示符。eth.getBlock(10000)
并获取块信息作为结果,参考文档。你的系统在几分钟内运行,无需安装已经500GB以上的以太坊区块链!
这将为你带来一个帐户余额(钱包)的输出。
const http = require('http');
const walletAddress = '0xDED5f23C157aCef931946D9A695cAc3eF1AaaA8D';
var Web3 = require('web3');
var web3 = new Web3();
web3.setProvider(new web3.providers.HttpProvider('http://85.214.51.53:8545'));
var balance = web3.eth.getBalance('0xDED5f23C157aCef931946D9A695cAc3eF1AaaA8D');
http.createServer(function(request, response) {
response.writeHead(200, {'Content-Type': 'text/html'});
response.end("<!DOCTYPE html>\n" +
"<html lang=\"en\">\n" +
"<head>\n" +
" <meta charset=\"UTF-8\">\n" +
" <title>ethernode.biz</title>\n" +
"</head>\n" +
"<body>\n" +
"<p>ethernode.biz</p>" +
"<center>\n" +
"</center>\n " +
"<p> Ethereum balance : " + balance +"</p>\n" +
"</body>\n" +
"</html>\n");
}).listen(process.env.PORT);
geth_rpc_getblock.js
下的Unix系统上保存以下shell脚本。确保你具有执行它的正确权限。./geth_rpc_getblock.js
是否会带来一些正确的输出。它应返回类似Data::QBIT=27867000000;WETH=0;ETH=0.002650772
的内容。geth_access.php
PHP脚本。$shellstring
中的路径调整为脚本文件位置。Data::QBIT=27867000000;WETH=0;ETH=0.002650772
。你说对了!请记住,从长远来看,使用php shell_exec
命令访问geth并不是很省事。
#!/bin/sh
# ------------------------------------------------------------------------------
# Qubitica.net
# ------------------------------------------------------------------------------
# Don't define PARAM to use the standard IPC comms
# Use below to connect to RPC port
PARAM="rpc:http://85.214.51.53:8545"
/var/www/vhosts/ethernode.info/php/geth attach $PARAM << EOF | grep "Data:" | sed "s/Data: //"
var erc20ABI = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"}],"name":"burnFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}];
//var QBITWalletAddress = "$1"; You may pass a parameter from the php call into this $1.
var QBITContractAddress1 = "0xCb5ea3c190d8f82DEADF7ce5Af855dDbf33e3962";
var QBITContractAddress2 = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";
var QBITWalletAddress = "0x842286ea00502f8e5b1ea40d17ebc4b70becda08";
var QBITContract1= web3.eth.contract(erc20ABI).at(QBITContractAddress1);
var QBITContract2= web3.eth.contract(erc20ABI).at(QBITContractAddress2);
var acctBal = web3.fromWei(eth.getBalance(QBITWalletAddress), "ether");
totalBal += parseFloat(acctBal);
var QBITbalanceOf = QBITContract1.balanceOf(QBITWalletAddress);
var WETHbalanceOf = QBITContract2.balanceOf(QBITWalletAddress);
console.log("Data:"+":QBIT="+ QBITbalanceOf +";WETH="+ WETHbalanceOf +";ETH="+ acctBal);
exit;
<<<<< New File
<?php
$shellstring= "./geth_rpc_getblock.js";
$output=shell_exec($shellstring);
echo "$output";
?>
\n\lf
======================================================================
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汇智网原创翻译,转载请标明出处。这里是原文如何通过Geth、Node.js和UNIX/PHP访问以太坊节点