function UserRegister(string memory userName,uint feiyong ) public payable returns(string memory isOK,string memory resourceID){
   //address conAddr;
   emit LogContractAddress(msg.sender,address(this));
   emit LogData(msg.data);
   //byte userID=sha3(bytes(userName));
   if (bytes(users[userName].name).length==0){

       emit UserRegisterEVENT("null",userName);
       return ("null",userName);
   }
   else
   {
       emit UserRegisterEVENT("UserName has been registered","null");
       return("UserName has been registered","null");
   }

var userName="def"

console.log("error="+error);

hash=0x39e027a89c27d03e71ab2a310adefceca3dde48f668d2692705466501dff563e