Hyperledger Fabric-使用Node.js的HistoryQueryIterator [英] Hyperledger Fabric- HistoryQueryIterator using nodejs

问题描述

我正在尝试使用nodejs创建超级账本链代码，fabric-shim对我来说是新的. 我正在尝试使用getHistoryForKey()来获取资产的历史记录.

I am trying to create hyperledger chaincode using nodejs and fabric-shim is new to me. I am trying to fetch history of an asset using getHistoryForKey().

我尝试使用while遍历HistoryQueryIterator，但未成功.

I tried iterating through HistoryQueryIterator using while but i was not successful.

@Transaction()
public async getAllHistory(ctx:Context,key:string):Promise<void>{
    const history = await ctx.stub.getHistoryForKey(key);
     while(history.next()){
         history.next().then(value =>{
            console.info("================>",value.toString());
         })
         .catch(err =>{
            console.info("ERROR",err);
         })
     }

}

上面的代码给出了[object Object].

如果有人可以向我指出正确的方向，那将会有所帮助.

If someone could point me in the right direction it would be helpful.

推荐答案

您可以在Hyperledger Fabric官方样本(chaincodes/marbles02)中找到有关如何使用getHistoryForKey的示例.

You can find an example about how to use getHistoryForKey in the official Hyperledger Fabric samples ( chaincodes/marbles02).

https://github .com/hyperledger/fabric-samples/blob/release-1.4/chaincode/marbles02/node/marbles_chaincode.js

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