错误：链码参数错误：无效字符 'â' 寻找值的开头答案

【问题标题】：Error: chaincode argument error: invalid character 'â' looking for beginning of value错误：链码参数错误：无效字符 'â' 寻找值的开头
【发布时间】：2020-07-17 13:58:22
【问题描述】：

我正在尝试查询我在 hyperledger fabric 2.2 网络上安装的链码。

我正在尝试 test-network 。我正在使用这个命令

peer chaincode query -C mychannel -n fabcar -c ‘{“Args”:[“queryAllCars”]}’

但我收到此错误。

Error: chaincode argument error: invalid character 'â' looking for beginning of value
Usage:
  peer chaincode query [flags]

Flags:
  -C, --channelID string               The channel on which this command should be executed
      --connectionProfile string       Connection profile that provides the necessary connection information for the network. Note: currently only supported for providing peer connection information
  -c, --ctor string                    Constructor message for the chaincode in JSON format (default "{}")
  -h, --help                           help for query
  -x, --hex                            If true, output the query value byte array in hexadecimal. Incompatible with --raw
  -n, --name string                    Name of the chaincode
      --peerAddresses stringArray      The addresses of the peers to connect to
  -r, --raw                            If true, output the query value as raw bytes, otherwise format as a printable string
      --tlsRootCertFiles stringArray   If TLS is enabled, the paths to the TLS root cert files of the peers to connect to. The order and number of certs specified should match the --peerAddresses flag

Global Flags:
      --cafile string                       Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
      --certfile string                     Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
      --clientauth                          Use mutual TLS when communicating with the orderer endpoint
      --connTimeout duration                Timeout for client to connect (default 3s)
      --keyfile string                      Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
  -o, --orderer string                      Ordering service endpoint
      --ordererTLSHostnameOverride string   The hostname override to use when validating the TLS connection to the orderer.
      --tls                                 Use TLS when communicating with the orderer endpoint
      --transient string 

               Transient map of arguments in JSON encoding

【问题讨论】：

你可以试试这个命令peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}' 吗？

标签： docker docker-compose hyperledger-fabric hyperledger-chaincode chaincode

【解决方案1】：

正如@alpha peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}' 所注释的那样，它将起作用。不同之处在于在传递参数时将’ 替换为'。

【讨论】：

【解决方案2】：

请将引号‘ 替换为 ' 和“ 替换为 " 。这里的问题是它无法检测到引号。

【讨论】：