web3.js编译Solidity，发布，调用全部流程

root@i-colbyo7v:/home/ubuntu# mkdir web3test && cd web3test
root@i-colbyo7v:/home/ubuntu/web3test# npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See npm help json for definitive documentation on these fields
and exactly what they do.

Use npm install afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
package name: (web3test) test
version: (1.0.0)
description:
entry point: (index.js)
test command:
git repository:
keywords:
author:
license: (ISC)
About to write to /home/ubuntu/web3test/package.json:

{
“name”: “test”,
“version”: “1.0.0”,
“description”: “”,
“main”: “index.js”,
“scripts”: {
“test”: “echo \”Error: no test specified\” && exit 1”
},
“author”: “”,
“license”: “ISC”
}

Is this ok? (yes) yes
\root@i-colbyo7v:/home/ubuntu/web3test# npm install web3 –save
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN [email protected] No description
npm WARN [email protected] No repository field.

• [email protected]
  added 6 packages in 16.859s
  root@i-colbyo7v:/home/ubuntu/web3test# vim index.js

var Web3 = require(“web3”);
var web3 = new Web3();
web3.setProvider(new Web3.providers.HttpProvider(“http://localhost:8545“));
~
~~let source = “pragma solidity ^0.4.0;contract Calc{ uint count; function add(uint a, uint b) returns(uint){ count++; return a + b; } function getCount() returns (uint){ return count; }}”;

geth –identity “haha” –datadir ./data/00 –networkid 12345 –rpcapi “db,eth,net,web3” –port 61910 –rpcport 8200 console