基于 Go 构建一个区块链 Demo.zip

# BlockChain 基于 Go 构建一个区块链 Demo ## 安装 // 获取项目源码 $ cd $GOPATH/src $ git clone git@github.com:AustinDeng/BlockChain.git ## 运行 // 进入目录 $ cd $GOPATH/src/BlockChain // 执行命令 $ go run ./cmd/main.go Index: 0 PrevBlockHash: CurrHash: 0d8845eb2da42f75aef4ee920f644975d73347e0331d17b37209c4f32ef4867f Data: Geneesis Block Timestamp: 1539490069 Index: 1 PrevBlockHash: 0d8845eb2da42f75aef4ee920f644975d73347e0331d17b37209c4f32ef4867f CurrHash: b11305449703848e79f02f0ba7f7db6bdd085a4a5ea50382ea4cca77644c376b Data: This is the first block. Timestamp: 1539490069 Index: 2 PrevBlockHash: b11305449703848e79f02f0ba7f7db6bdd085a4a5ea50382ea4cca77644c376b CurrHash: 751c3793ee3492f5e050c6b662f4d832bc125dde0aae813147e5459abc23f29a Data: This is the second block. Timestamp: 1539490069 ## 通过 RPC 接口访问数据 ### 启动服务 // 进入目录 $ cd $GOPATH/src/BlockChain // 开启http服务监听 $ go run rpc/Server.go ### 查看数据 打开浏览器输入 URL 地址：`http://localhost:8000/blockchain/get` { "Block": [ { "Index": 0, "TimeStamp": 1539490490, "PrevBlockHash": "", "Hash": "0d8845eb2da42f75aef4ee920f644975d73347e0331d17b37209c4f32ef4867f", "Data": "Genesis Block" } ] } ### 写入区块链数据 打开浏览器输入 URL 地址：`http://localhost:8000/blockchain/write?data=This is the first block.` { "Block": [ { "Index": 0, "TimeStamp": 1539490490, "PrevBlockHash": "", "Hash": "0d8845eb2da42f75aef4ee920f644975d73347e0331d17b37209c4f32ef4867f", "Data": "Genesis Block" }, { "Index": 1, "TimeStamp": 1539490635, "PrevBlockHash": "0d8845eb2da42f75aef4ee920f644975d73347e0331d17b37209c4f32ef4867f", "Hash": "b11305449703848e79f02f0ba7f7db6bdd085a4a5ea50382ea4cca77644c376b", "Data": "This is the first block." } ] } ## 项目部分源码 ### 区块结构体定义 type Block struct { Index int64 TimeStamp int64 PrevBlockHash string Hash string Data string } ### 区块链结构体定义 type BlockChain struct { Block []*Block } ### 计算区块的 Hash 值 func calculateHash(block Block) string { data := string(block.Index) + string(block.TimeStamp) + block.PrevBlockHash + block.Data blockInBytes := sha256.Sum256([]byte(data)) return hex.EncodeToString(blockInBytes[:]) }