Getting Error: http: read on closed response body from Transaction Processor function in Hyperledger Composer

Question

我有一个结构网络运行一个简单的 BNA。该 BNA 定义了两种类型的参与者，即。公司和个人。在这里，每个人与公司的关系如下所示（cto 文件）：

participant Corporate identified by corporateId {
    o String corporateId
    o String corporateName
}
participant Person identified by personId {
    o String personId
    --> Corporate corporate
}

我想做什么：

使用交易处理器功能创建公司：成功
使用交易处理器功能创建个人：失败

以下是 #2 的交易处理器函数的片段：

let corporateIdExpected = personDetails.corporate;

if(corporateIdExpected && corporateIdExpected != '') {
    let corporateRetrieved = await query("GetCorporateByCorporateId", {corporateId: corporateIdExpected});
    if(!corporateRetrieved || corporateRetrieved == '') {
        throw new Error("Corporate details not valid. Please check if your corporate is present on the network.");
    }
}

来自我的 queries.qry 的片段：

query GetCorporateByCorporateId {
  description: "Returns all corporates in the registry"
  statement:  
      SELECT  org.samplenetwork.participants.Corporate
          WHERE (corporateId == _$corporateId)
}

因此，当我尝试 #2 时出现以下错误：

Error: 2 UNKNOWN: error executing chaincode: transaction returned with failure: Error: Error: http: read on closed response body

但是，当我尝试直接从 swagger 执行查询时，它运行成功。

我正在使用：

超级账本结构：1.1 超级账本作曲家：0.19.8

我是否遗漏了这一项的任何检查或步骤？

Answer 1

对于第 2 项 - 您真的不需要每次都执行命名查询。

您可以按如下方式进行等效检查 ("does he exist already?")（其中 trxn 下面是您的交易定义等中定义的交易对象）：

const personRegistry = await getParticipantRegistry('org.acme.example.Person');
console.log("The person identifier to check is " + trxn.corporate.getIdentifier() ) 

const exists = await personRegistry.exists(trxn.corporate.getIdentifier() ) ;

console.log("exists is set to " + exists); // boolean

if (exists)
        console.log("he exists") 
else
        console.log("he doesn't exist");

Getting Error: http: read on closed response body from Transaction Processor function in Hyperledger Composer

Getting Error: http: read on closed response body from Transaction Processor function in Hyperledger Composer

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