说在前面：
如果你正在为关于 ERC20 相关问题而发愁，写了一些关于 ERC20 系列的文档，请看笔者的大纲链接，应该能够帮助你走出现在的困境。
大纲链接：ERC20 代币整体分类大纲与实现
注意：笔者以下操作皆在主网。
一、运行 Geth（go-ethereum） 钱包节点
1.打开 liunx 连接窗口，并输入以下命令：
# 后台运行并启动 geth 快速同步主网区块
nohup geth --syncmode "fast" --datadir "同步区块的目录" --rpc --rpcapi "eth,web3,personal" --rpcport 8545--rpcaddr "0.0.0.0" --cache=1024 --maxpeers 150 &2.另起一个连接窗口，输入以下命令：
# 启动交互式 JavaScript 环境
geth --datadir "同步区块的目录" attach启动成功后，大致如下图：
你可以输入各种命令来进行交互，例如
二、获取代币的 contract abi
contract abi 中保存了智能合约代币的实现方法以及方法需要的参数，笔者后面调用代币 api 进行转账等等一些其他操作，其转账函数是必须要存在于 abi 中，而想要 abi 存在该转账函数，就与发币的智能合约有关，需要合约里面写了转账函数才行。
简单来说：abi 就是发币智能合约代码的缩影，它里面浓缩了该发币合约代码的所有变量、函数以及参数。
eth主网浏览器地址：https://etherscan.io
在搜索框中输入你要查找代币的合约地址，得到如下图：
如果读者将 abi 的 json 格式化一下，会很清晰的看出合约代码中的函数等等，为了读者能更好的理解，笔者就辛苦一下，将自己的 json 贴出来，如下：
[
{
"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": "amount",
"type": "uint256"
}
],
"name": "withdrawEther",
"outputs": [ ],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_value",
"type": "uint256"
}
],
"name": "burn",
"outputs": [
{
"name": "success",
"type": "bool"
}
],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
篇幅太多了，少贴一点，后面的就省略了。
............
]
三、获取智能合约对象
在JS交互窗口中输入：
1.将上一步我们得到的 abi 存放到变量内
var cfcAbi = [{"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":"amount","type":"uint256"}],"name":"withdrawEther","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"unfreeze","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":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","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":true,"inputs":[{"name":"","type":"address"}],"name":"freezeOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"freeze","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":[{"name":"initialSupply","type":"uint256"},{"name":"tokenName","type":"string"},{"name":"decimalUnits","type":"uint8"},{"name":"tokenSymbol","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"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"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Freeze","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Unfreeze","type":"event"}];
2.实例化智能合约
# 在 at 后面填写你发送代币的合约地址
var cfcContract = web3.eth.contract(cfcAbi).at('0xd4b33b74cec5141c0c40be4a664641495c6afc7e');到这里，前期准备已经完了，接下来可直接调用api，具体调用请看下一节：ERC20 代币 API 调用-代币功能函数（二）
如果搭建过程中遇到任何问题，请发送问题致邮件：[email protected]，我会尽我所能帮您解答。
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