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🤹 基于区块链（Hyperledger Fabric）的房地产交易系统（可作为区块链毕设项目参考）

License: MIT License

Go 43.25% Shell 3.36% JavaScript 14.96% Vue 34.09% HTML 0.31% SCSS 3.68% Dockerfile 0.34%

blockchain hyperledger-fabric smart-contracts fabric

fabric-realty's Introduction

🚀 本项目使用 Hyperledger Fabric 构建底层区块链网络, go 编写智能合约，应用层使用 gin+fabric-sdk-go ，前端使用 vue+element-ui

如果想要联系我，可以关注我的公众号【gopher云原生】

教程

万字长文，教你用go开发区块链应用

🤔 有任何疑问，请先看完本篇文章。本项目涉及的知识点都有在文章中进行说明

手动部署

环境要求：安装了 Docker 和 Docker Compose 的 Linux 或 Mac OS 环境

附 Linux Docker 安装教程：点此跳转

🤔 Docker 和 Docker Compose 需要先自行学习。本项目的区块链网络搭建、链码部署、前后端编译/部署都是使用 Docker 和 Docker Compose 完成的。

下载本项目放在任意目录下，例：/root/fabric-realty
给予项目权限，执行 sudo chmod -R +x /root/fabric-realty/
进入 network 目录，执行 ./start.sh 部署区块链网络和智能合约
进入 application 目录，执行 ./start.sh 启动前后端应用，然后就可使用浏览器访问前端页面 http://localhost:8000 ，其中后端接口地址为 http://localhost:8888
（可选）进入 network/explorer 目录，执行 ./start.sh 启动区块链浏览器后，访问 http://localhost:8080，用户名 admin，密码 123456

完全清理环境

注意，该操作会将所有数据清空。按照该先后顺序：

（如果启动了区块链浏览器）进入 network/explorer 目录，执行 ./stop.sh 关闭区块链浏览器
进入 application 目录，执行 ./stop.sh 关闭区块链应用
最后进入 network 目录，执行 ./stop.sh 关闭区块链网络并清理链码容器

目录结构

application/server : fabric-sdk-go 调用链码（即智能合约），gin 提供外部访问接口（RESTful API）
application/web : vue + element-ui 提供前端展示页面
chaincode : go 编写的链码（即智能合约）
network : Hyperledger Fabric 区块链网络配置

功能流程

管理员为用户业主创建房地产。

业主查看名下房产信息。

业主发起销售，所有人都可查看销售列表，购买者购买后进行扣款操作，并等待业主确认收款，交易完成后，更新房产持有人。在有效期期间可以随时取消交易，有效期到期后自动关闭交易。

业主发起捐赠，指定受赠人，受赠人确认接收受赠前，双方可取消捐赠/受赠。

演示效果

fabric-realty's People

Contributors

Stargazers

Watchers

Forkers

zyf7862634 skylovead beaquant tmac33 randyshu2018 firstzzq kjfcpua shishengsen lyszhang daniel-007 acrowise gkzcl cjj3770 oushii0808 yinlistarapp lhx-git 15811431393 929220967 yueer-creative hnzhangyongjie dgo2dance protobe hub-panpan 4thservice skyejy marvin-liu-sx gu-yy linjin8886 leixw0102 zfg88287508 perfectli7 army82 jonathankin suosuidewenqing gbzdy musigo klsfct junwuguaai j5s ggmaster fangyuan1993 zhongwang-boy miaozzzz wuchunfu wzl521 lwb69 fmy1993 yjian180 wjywood transferhhh gqqnbig cyril1992 playniuniu cealiu wappoint xuew8412 wangwangwang978 admaing makingchance2018 jacliscs judgegao longyy ttttyy yujie1017 cld378632668 du1261926849 xiaohuojian-xys zzy2005137 q544891464 t-cookie msygraduationthesis tanxiangyuu zhaoyanfang hml-guet sure-l jjwygjj tomlili43 wuzhanfly kevin-soul huiliyikk npmmirror ivil tbayan msagef xiaobingchan qauroraq pomelo-company territoryfan itutopia lifengya15 pwhdgur nothibio ziyang-007 jiahao-shen chicken-hard wwwppp-809 metaverse-going telesoho hitomiyyds zouyip

fabric-realty's Issues

user not found

failed to create channel context: failed to get client context to create channel client: user not found

调用链码报错connection refused

在运行start.sh的时候安装和实例化链码都正常，但是再次使用命令调用链码时报错

切换leveldb为couchdb报错

修改 - CORE_LEDGER_STATE_STATEDATABASE=CouchDB ，没生效，大佬还需要修改哪里

启动区块链最后一步失败

报错如下
Error: error getting endorser client for invoke: endorser client failed to connect to peer0.org1.blockchainrealestate.com:7051: failed to create new connection: context deadline exceeded

大佬，第一步启动就出问题Creating cli ... error

区块链：启动
Creating network "deploy_default" with the default driver
Creating orderer.blockchainrealestate.com ...
Creating cli ... error

ERROR: for cli Cannot create container for service cli: Conflict. The container name "/cli" is already in use by container "f1b5833e0765d5666d08d25756d4a82cd05da90edef0cd6c2dfa3aec1cc5e8b4". You have to remove (or rename) that
Creating orderer.blockchainrealestate.com ... error

Service 'fabric-realty.app' failed to build : Build failed

请求失败 network error

请问一下，将此项目部署在阿里云服务器上，为什么会出现请求失败 Network Error呢

部署成功，但是浏览器端http://localhost:8000/web无法访问

pull access denied for fabric-realty.web

在application中运行./start.sh时候，发生错误
pull access denied for fabric-realty.web, repository does not exist or may require 'docker login': denied: requested acce...

区块链浏览器配置问题

您好，十分感谢您分享这个项目，它对我帮助很大！我按照您的说明部署了这个项目，但是访问区块链浏览器时发现上面不能正确显示网络的结点数量，在readme展示图片中也是如此。我想问问是不是区块链浏览器的配置问题，如何修正？谢谢！

多机搭建方面的求助

你好，如果我想进行多机交互，除了在本机hosts文件配置对应ip和在docker-compose.yaml文件里面修改IP配置信息还需要修改什么吗

第七步和第八步出现error，求解答，感恩！！！

七、实例化链码
2021-11-10 15:46:12.036 UTC [main] InitCmd -> WARN 001 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
2021-11-10 15:46:12.042 UTC [main] SetOrdererEnv -> WARN 002 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
2021-11-10 15:46:12.049 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2021-11-10 15:46:12.050 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
Error: could not assemble transaction, err proposal response was not successful, error code 500, msg error starting container: error starting container: Failed to generate platform-specific docker build: Error returned from build: 1 "no required module provides package github.com/togettoyou/blockchain-real-estate/chaincode/blockchain-real-estate: go.mod file not found in current directory or any parent directory; see 'go help modules'
"
正在等待链码实例化完成，等待5秒
八、验证查询账户信息
2021-11-10 15:46:20.402 UTC [main] InitCmd -> WARN 001 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
2021-11-10 15:46:20.409 UTC [main] SetOrdererEnv -> WARN 002 CORE_LOGGING_LEVEL is no longer supported, please use the FABRIC_LOGGING_SPEC environment variable
2021-11-10 15:46:20.482 UTC [chaincodeCmd] InitCmdFactory -> INFO 003 Retrieved channel (assetschannel) orderer endpoint: orderer.blockchainrealestate.com:7050
Error: endorsement failure during invoke. response: status:500 message:"make sure the chaincode blockchain-real-estate has been successfully instantiated and try again: chaincode blockchain-real-estate not found"

接口调用智能合约失败event service creation failed:

{"code":500,"msg":"失败","data":"event service creation failed: could not get chConfig cache reference: QueryBlockConfig failed: QueryBlockConfig failed: queryChaincode failed: Multiple errors occurred: - Transaction processing for endorser [127.0.0.1:37051]: Endorser Client Status Code: (2) CONNECTION_FAILED. Description: dialing connection on target [127.0.0.1:37051]: connection is in TRANSIENT_FAILURE - Transaction processing for endorser [127.0.0.1:27051]: Endorser Client Status Code: (2) CONNECTION_FAILED. Description: dialing connection on target [127.0.0.1:27051]: connection is in TRANSIENT_FAILURE"}

这是什么问题可以告诉我排查思路吗，链码容器内部可以调用成功的

启动区块链问题

自定义改动代码无法生效

尝试自定义改动代码后，按照要求执行./build.sh并更改docker-compose.yml路径后，依旧无法生效
请问前端打包后的dist文件存放在哪里？是不是除了这两处之外还需要修改其他地方的路径？麻烦作者大大了

请您指教——浏览器访问 http://localhost:8000/web 读不出数据

您好，我们按照您的步骤运行到了浏览器访问 http://localhost:8000/web这一步，顺利打开了网页，但“无数据”，报错“请求失败，timeout of 5000ms exceeded”
还望您指教，非常感谢！

启动区块链网络的最后一步报错了

如图

前面的都是对的，最后一步不知道啥情况。求求哪位大佬来指点一下吧

执行完部署流程没有报错，访问http://localhost:8000/web显示无法连接

启动浏览器报错

您好，请问在启动区块链浏览器的时候报这个错该怎么解决啊，我改了好多地方都没用。

cryptogen工具无法启用

2021-04-13 07:31:13.704 UTC [main] InitCmd -> ERRO 002 Cannot run peer because cannot init crypto, folder "/etc/hyperledger/peer/users/[email protected]/msp" does not exist

大佬在启动区块链时报了错，怎么解决啊，求指点

Error: error getting endorser client for invoke: endorser client failed to connect to peer0.org1.blockchainrealestate.com:7051: failed to create new connection: context deadline exceeded

大哥，部署的云雀文件失效了，能在恢复下吗？谢谢

第二部启动时，镜像拉取失败

Can you write another backend version with ExpressJS for this project

Can you write another backend version with ExpressJS for this project. I tried with ExpressJS for RestAPI but I can't connect to blockchain network.

Changes in Front End is not reflecting...

I tried to change some text from Chinese to English or Arabic in application/web/views pages but it is not reflecting on the browser

Could you please help me how can I update on the front end side?

http://localhost:8000/api/v1/queryAccountList出错偶尔请求成功

data: Transaction processing for endorser [peer0.jd.com:7051]: Chaincode status Code: (500) UNKNOWN. Description: failed to execute transaction 08405a66e161e0b2b76a825d7ebcfd30d4f540a7860162fd3f243c9b5526ec18: error sending: txid: 08405a66e161e0b2b76a825d7ebcfd30d4f540a7860162fd3f243c9b5526ec18(appchannel) exists

导入其他包报错

您好，我在学习fabric，尝试在这个项目基础上增加一个获取当前channel blockinfo的功能，导入
"github.com/hyperledger/fabric-sdk-go/pkg/client/ledger" 其中有一个queryinfo的函数
我尝试在hello.go导入这个包，但是编译会报错

cannot use responses (type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common".Block) as type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-protos-go/common".Block in argument to matchBlockData
../vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/ledger/ledger.go:208:23: cannot use responses (type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common".Block) as type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-protos-go/common".Block in argument to matchBlockData
../vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/ledger/ledger.go:232:23: cannot use responses (type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common".Block) as type []"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-protos-go/common".Block in argument to matchBlockData
../vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/ledger/ledger.go:307:2: cannot use response (type *"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/peer".ProcessedTransaction) as type *"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-protos-go/peer".ProcessedTransaction in return argument
../vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/ledger/ledger.go:343:2: cannot use *"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common".Block value as type *"github.com/togettoyou/blockchain-real-estate/vendor/github.com/hyperledger/fabric-protos-go/common".Block in return argument

就是在third-party里有这个ledger的依赖包，但是我也尝试导入
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/fab"
"github.com/hyperledger/fabric-protos-go/common"
"github.com/hyperledger/fabric-protos-go/peer"
这三个包，但是依然报错

也在stackoverflow提问了，请问这个要怎么解决，能直接删了third-party 包吗？

https://stackoverflow.com/questions/66728204/fabric-govendor-project-third-party-issue

刚接触go和fabric,学校里老师让做一个基本的农产品信息上链功能的小demo，遇到这个问题实在解决不了了，谢谢