首先附上github地址：blockchain-application-using-fabric-java-sdk
我安裝readme中的步驟來，把區塊鏈網路跑起來之后，創建channel成功了，安裝鏈碼也成功了，只是最后在實體化（instantiate）鏈碼的時候一直失敗，提示：
could not build chaincode: docker build failed: docker image build failed: docker build failed: Error returned from build: 1 "/chaincode/input/src/github.com/chaincode/farcar.go:37:2: cannot find package “github.com/hyperledger/core/chaincode/shim” in any of:
/usr/local/go/src/github.com/hyperledger/core/chaincode/shim (from $GOROOT)
/chaincode/input/src/github.com/hyperledger/fabric-chaincode-go/shim (from $GOPATH)
/go/src/github.com/hyperledger/fabric-chaincode-go/shim
/chaincode/input/src/github.com/chaincode/pcurd.go:38:6: cannot find package “github.com/hyperledger/fabric/protos/peer” in any of:
/usr/local/go/src/github.com/hyperledger/fabric/protos/peer (from $GOROOT)
/chaincode/input/src/github.com/hyperledger/fabric/protos/peer (from $GOPATH)
/go/src/github.com/hyperledger/fabric/protos/peer"
這里通過2步解決這個問題，
第一步
cd到network_resources/chaincode/src/github.com/fabcar目錄下，更改fabcar.go檔案import的package，修改后的內容如下：
package main
import (
"bytes"
"encoding/json"
"fmt"
"strconv"
"github.com/hyperledger/fabric-chaincode-go/shim"
sc "github.com/hyperledger/fabric-protos-go/peer"
)第二步
安裝go1.13.15，然后執行：
go env -w GO111MODULE=on把專案clone下來之后,cd到network_resources/chaincode/src/github.com/fabcar目錄下，然后執行
go mod init
go mod vendor然后刪掉docker容器，重新跑一遍就好了
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