go get -u github.com/tencentcloud/tencentcloud-sdk-go

package main

import (
   "fmt"

   "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common"
   "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common/errors"
   "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common/profile"
   tbaas "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/tbaas/v20180416"
)

func main() {
   // 实例化一个认证对象，入参需要传入腾讯云账户 SecretId 和 SecretKey，此处还需注意密钥对的保密
   credential := common.NewCredential(
      "",
      "",
   )
   // 实例化一个client选项，可选的，没有特殊需求可以跳过
   cpf := profile.NewClientProfile()
   cpf.HttpProfile.Endpoint = "tbaas.intl.tencentcloudapi.com"
   // 实例化要请求产品的client对象,clientProfile是可选的
   client, _ := tbaas.NewClient(credential, "ap-hongkong", cpf)

   // 实例化一个请求对象,每个接口都会对应一个request对象
   request := tbaas.NewInvokeFabricChaincodeRequest()

   request.ClusterId = common.StringPtr("fabric-65z42qi150")
   request.ChannelId = common.StringPtr("channel-9xej4d")
   request.ChaincodeName = common.StringPtr("fact")
   request.FuncName = common.StringPtr("Set")
   request.FuncParam = common.StringPtrs([]string{ "key", "value" })
   request.WithAsyncResult = common.BoolPtr(false)
   // 返回的resp是一个InvokeFabricChaincodeResponse的实例，与请求对象对应
   response, err := client.InvokeFabricChaincode(request)
   if _, ok := err.(*errors.TencentCloudSDKError); ok {
      fmt.Printf("An API error has returned: %s", err)
      return
   }
   if err != nil {
      panic(err)
   }
   // 输出json格式的字符串回包
   fmt.Printf("%s", response.ToJsonString())
}