1. queryUser时：

2020-04-22 08:10:09.237 UTC [msp] GetLocalMSP -> DEBU 001 Returning existing local MSP
2020-04-22 08:10:09.237 UTC [msp] GetDefaultSigningIdentity -> DEBU 002 Obtaining default signing identity
2020-04-22 08:10:09.237 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 003 Using default escc
2020-04-22 08:10:09.237 UTC [chaincodeCmd] checkChaincodeCmdParams -> INFO 004 Using default vscc
2020-04-22 08:10:09.237 UTC [msp/identity] Sign -> DEBU 005 Sign: plaintext: 0A92070A6C08031A0B08E1F7FFF40510...7175657279557365720A057573657232 
2020-04-22 08:10:09.237 UTC [msp/identity] Sign -> DEBU 006 Sign: digest: 036E9C40913814F17B04FE8CF94E94283B0DE28028C45ABCCE2B54CE3F13AE0E 
Query Result: 269291049
2020-04-22 08:10:09.241 UTC [main] main -> INFO 007 Exiting.....

2. 再次注册同一个用户时，也会返回成功，如下

2020-04-22 08:17:44.687 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> DEBU 0ca ESCC invoke result: version:1 response:<status:200 message:"OK" payload:"1003589531" > payload:"\n w\260\212\336^}o\216\204P3\3057gT\320\221\3655Np\033(\302\267PJ\342\323\275\224\323\022<\n\030\022\026\n\004lscc\022\016\n\014\n\006assets\022\002\010\001\032\017\010\310\001\032\n1003589531\"\017\022\006assets\032\0051.0.0" endorsement:<endorser:"\n\007Org1MSP\022\370\005-----BEGIN -----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\nim3+4NLaEw==\n-----END -----\n" signature:"0D\002 ]Z\002\351\253\036\267\276]t\265f\353\272\36030\322\250K>\217i\365\255\010jon!\242\364\002 ,j\252\331\"\330\236\235\347\016\257P!iz\003pwP=\273\314\251\247\330H\237%%\033\030y" > 
2020-04-22 08:17:44.688 UTC [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 0cb Chaincode invoke successful. result: status:200 payload:"1003589531" 
2020-04-22 08:17:44.688 UTC [main] main -> INFO 0cc Exiting.....