0、参考文档
GitHub - FISCO-BCOS/go-sdk: golang SDK of FISCO BCOS
1、环境配置
操作系统：CentOS7
Golang版本：1.17.2
WeBASE版本：1.5.2（已开启）可参见：WeBASE部署 - 搭建FISCO节点_ling1998的博客-CSDN博客
Git版本：1.8.3.1
2、下载go-sdk
（1）进入工程目录
[root@localhost ~]# cd /home/tracy/GoContract/（2）下载Go-sdk
[root@localhost GoContract]# git clone https://github.com/FISCO-BCOS/go-sdk.git
Cloning into 'go-sdk'...
remote: Enumerating objects: 1739, done.
remote: Counting objects: 100% (258/258), done.
remote: Compressing objects: 100% (174/174), done.
remote: Total 1739 (delta 107), reused 145 (delta 62), pack-reused 1481
Receiving objects: 100% (1739/1739), 1.01 MiB | 634.00 KiB/s, done.
Resolving deltas: 100% (930/930), done.
（3）进入go-sdk目录
[root@localhost gosdkdemo]# cd ../go-sdk（4）下载依赖
[root@localhost go-sdk]# go mod tidy（5）编译生成abigen工具
[root@localhost go-sdk]# go build ./cmd/abigen/编译时间有些长，耐心等待
（6）创建工程目录并移动abigen至工程目录
[root@localhost go-sdk]# cd .. #返回上一级目录
[root@localhost GoContract]# mkdir gosdkdemo #创建工程目录
[root@localhost GoContract]# cd gosdkdemo #进入工程目录
[root@localhost gosdkdemo]# mkdir tools #创建目录，存放ABI工具及相关文件
[root@localhost gosdkdemo]# cp ../go-sdk/abigen tools/ #拷贝上一步生成的abigen到此目录中3、配置文件config.toml
（1）进入工程目录
[root@localhost GoContract]# cd gosdkdemo（2）创建配置文件（config.toml）
[root@localhost gosdkdemo]# vi config.toml配置文件内容
[Network]
#type rpc or channel
Type="channel"
CAFile="ca.crt"
Cert="sdk.crt"
Key="sdk.key"
[[Network.Connection]]
NodeURL="127.0.0.1:20200"
GroupID=1
# [[Network.Connection]]
# NodeURL="127.0.0.1:20200"
# GroupID=2
[Account]
# only support PEM format for now
KeyFile=".ci/0x83309d045a19c44dc3722d15a6abd472f95866ac.pem"
[Chain]
ChainID=1
SMCrypto=false按Esc退出编辑，输入:wq保存即出。
（3）拷贝配置文件中的证书及密钥文件
配置文件中如下三个文件
CAFile="ca.crt"
Cert="sdk.crt"
Key="sdk.key"
在webase-deploy/nodes/127.0.0.1/sdk中存在三个文件
将以上三个文件copy至工程目录中
[root@localhost gosdkdemo]# mkdir sdk #创建目录，保存证书及密钥文件
[root@localhost gosdkdemo]# cp /usr/local/webase-deploy/nodes/127.0.0.1/sdk/ca.crt sdk/
[root@localhost gosdkdemo]# cp /usr/local/webase-deploy/nodes/127.0.0.1/sdk/sdk.crt sdk/
[root@localhost gosdkdemo]# cp /usr/local/webase-deploy/nodes/127.0.0.1/sdk/sdk.key sdk/更改配置文件config.toml
[root@localhost gosdkdemo]# vi config.toml 内容如下，加上路径：
CAFile="sdk/ca.crt"
Cert="sdk/sdk.crt"
Key="sdk/sdk.key"
按Esc退出编辑，输入:wq保存即出。
（4）生成私钥文件
生成配置文件config.toml中的私钥文件，如下：
KeyFile=".ci/0x83309d045a19c44dc3722d15a6abd472f95866ac.pem"
下载console
[root@localhost gosdkdemo]# cd .. #返回上一级目录
[root@localhost GoContract]# git clone https://github.com/FISCO-BCOS/console.git使用get_account.sh脚本生成私钥文件
[root@localhost GoContract]# cd console/
[root@localhost console]# ls
build.gradle CONTRIBUTING.md gradle gradlew.bat README.md settings.gradle tools
Changelog.md doc gradlew LICENSE release_note.txt src
[root@localhost console]# ./tools/get_account.sh
[INFO] Account Address : 0xde54d4143e33780c5cb5eed919ce25d2608789ce
[INFO] Private Key (pem) : accounts/0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem
[INFO] Public Key (pem) : accounts/0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem.pub
将生成私钥文件目录移动至工程目录
[root@localhost console]# cp -r accounts/ ../gosdkdemo/查看工程目录结构
[root@localhost console]# cd ../gosdkdemo/ #进入工程目录
[root@localhost gosdkdemo]# tree
.
├── accounts
│ ├── 0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem
│ └── 0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem.pub
├── config.toml
└── sdk
├── ca.crt
├── sdk.crt
└── sdk.key
2 directories, 6 files（5）更改配置文件config.toml中的KeyFile值
[root@localhost gosdkdemo]# vi config.toml KeyFile值修改为上面生成的私钥账户文件
KeyFile="accounts/0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem"或
KeyFile=".accounts/0xde54d4143e33780c5cb5eed919ce25d2608789ce.pem"
accounts前面加点是为了隐藏文件。
按Esc退出编辑，输入:wq保存即出。
4、使用ABI工具生成go文件
注：在WebASE中已写好一个智能合约并编译部署，如下图所示
（1）生成智能合约.abi文件
[root@localhost gosdkdemo]# cd tools #进入tools目录
[root@localhost tools]# vi hello.abiabi内容在WeBASE的合约IDE中可查看，并拷贝到hello.abi文件中
按Esc退出编辑，输入:wq保存即出。
（2）生成智能合约.bin文件
[root@localhost tools]# vi hello.binbin内容在WeBASE的合约IDE中可查看，并拷贝到hello.bin文件中
按Esc退出编辑，输入:wq保存即出。
（3）使用abigen生成go文件
[root@localhost tools]# ./abigen -abi hello.abi -bin hello.bin -type hello -pkg main -out ../hello.go
[root@localhost tools]# cd .. #返回上一级目录
[root@localhost gosdkdemo]# ls #查看已经生成的hello.go文件
accounts config.toml hello.go sdk tools注：如果安装过Geth并配置环境变量，因Geth下有一个同名的abigen会依赖ethereum相关包生成GO文件，若不指定abigen，则默认使用Geth中的abigen，之后编译会报错。因此需要指定abigen为 刚刚通过go-sdk生成的abigen。如上面在tools目录下使用./abigen，指定是当前目前的abigen工具。
Geth中abigen生成的GO文件导入包为：
// Code generated - DO NOT EDIT.
// This file is a generated binding and any manual changes will be lost.
package main
import (
"errors"
"math/big"
"strings"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
)go-sdk生成的abigen工具，再生成的GO文件导入包为：
// Code generated - DO NOT EDIT.
// This file is a generated binding and any manual changes will be lost.
package main
import (
"math/big"
"strings"
"github.com/FISCO-BCOS/go-sdk/abi"
"github.com/FISCO-BCOS/go-sdk/abi/bind"
"github.com/FISCO-BCOS/go-sdk/core/types"
"github.com/FISCO-BCOS/go-sdk/event"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
)5、调用智能合约
进入CentOS可视化界面，打开VSCode，在这里编写、执行代码
（1）编写代码（main.go）
package main
import (
"fmt"
"log"
"github.com/FISCO-BCOS/go-sdk/client"
"github.com/FISCO-BCOS/go-sdk/conf"
"github.com/ethereum/go-ethereum/common"
)
func main() {
//parse config
configs, err := conf.ParseConfigFile("config.toml")
if err != nil {
log.Fatal(err)
}
config := &configs[0]
//connect peer
cli, err := client.Dial(config)
if err != nil {
log.Fatal(err)
}
//create a contract instance
contractAddr := "0x85aa38ac471df787e16a7323d9e8b721af5f7d48"
instance, err := NewHello(common.HexToAddress(contractAddr), cli)
if err != nil {
log.Fatal(err)
}
//call function of smart contract
name, err := instance.GetName(cli.GetCallOpts())
if err != nil {
log.Panic(err)
}
fmt.Println(name)
}
（2）生成go.mod
[tracy@localhost gosdkdemo]$ go mod init gosdkdemo（3）下载依赖包
[tracy@localhost gosdkdemo]$ go mod tidy
go: finding module for package github.com/FISCO-BCOS/go-sdk/conf
go: finding module for package github.com/FISCO-BCOS/go-sdk/client
go: found github.com/FISCO-BCOS/go-sdk/client in github.com/FISCO-BCOS/go-sdk v0.11.0
go: found github.com/FISCO-BCOS/go-sdk/conf in github.com/FISCO-BCOS/go-sdk v0.11.0
gosdkdemo imports
github.com/FISCO-BCOS/go-sdk/client imports
github.com/ethereum/go-ethereum/crypto imports
github.com/btcsuite/btcd/btcec/v2/ecdsa tested by
github.com/btcsuite/btcd/btcec/v2/ecdsa.test imports
github.com/btcsuite/btcd/chaincfg/chainhash: ambiguous import: found package github.com/btcsuite/btcd/chaincfg/chainhash in multiple modules:
github.com/btcsuite/btcd v0.21.0-beta (/home/tracy/gopath/pkg/mod/github.com/btcsuite/[email protected]/chaincfg/chainhash)
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.0 (/home/tracy/gopath/pkg/mod/github.com/btcsuite/btcd/chaincfg/[email protected])如遇到以上错误，将go.mod文件中的github.com/ethereum/go-ethereum v1.10.17 改为
github.com/ethereum/go-ethereum v1.10.16（修改版本号即可），如下图所示：
（4）编译
[tracy@localhost gosdkdemo]$ go build *.go
# command-line-arguments
./main.go:28:47: cannot use cli (type *client.Client) as type "github.com/ethereum/go-ethereum/accounts/abi/bind".ContractBackend in argument to NewHello:
*client.Client does not implement "github.com/ethereum/go-ethereum/accounts/abi/bind".ContractBackend (missing EstimateGas method)
./main.go:34:32: undefined: client.GetCallOpts若出现上面错误，是因为默认使用了Geth的abigen生成Go文件所导致，否则编译成功。
（5）运行
[tracy@localhost gosdkdemo]$ go run *.go
tracy总结
以上通过go-sdk生成的abigen工具（即第2步），与console中get_account.sh脚本生成私钥文件（即第3 -（4）步），无需再次配置，之后直接使用即可。