测试代码：

func TestInvokeWasmContract2(t *testing.T) {
	acc, _ := account.RetrieveAccount(mnemonic, 1)
	wasmContract := InitWasmContract(acc, node, "xuper", "counter", "XC1111111111111111@xuper")

	wg := &sync.WaitGroup{}
	for i := 0; i < 4; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			txid, err := wasmContract.InvokeWasmContract("increase", map[string]string{"key": "counter"})
			if err != nil {
				t.Log("err:", err)
				return
			}
			t.Log("txid:", txid)
		}()
	}
	wg.Wait()
}

错误：

--- PASS: TestInvokeWasmContract2 (3.82s)
    contract_test.go:191: txid: 958bdd5540491fb90707cecd2b07febb3523a1762cdbd86f2a53a07700d3bd4a
    contract_test.go:188: err: Failed to post tx: UTXOVM_NOT_FOUND_ERROR
    contract_test.go:188: err: Failed to post tx: UTXOVM_NOT_FOUND_ERROR
    contract_test.go:188: err: Failed to post tx: UTXOVM_NOT_FOUND_ERROR

XuperChain使用Go-SDK调用模板合约“文件hash上链时，更改文件hash_id后仍出现”such hash has existed already的报错
image
我在“工作台”中“合约管理”中调用中修改不同的hash_id均成功了，但是在本地调用时修改不同的hash_id出现了such hash has existed already的报错
智能合约中的存证函数如下：
void storeFileInfo() {
xchain::Context* ctx = this->context();
std::string user_id = ctx->arg("user_id");
std::string hash_id = ctx->arg("hash_id");
std::string file_name = ctx->arg("file_name");
const std::string userKey = UserBucket + "/" + user_id + "/" + hash_id;
const std::string hashKey = HashBucket + "/" + hash_id;
std::string value = user_id + "\t" + hash_id + "\t" + file_name;
std::string tempVal;
if (ctx->get_object(hashKey, &tempVal)) {
ctx->error("storeFileInfo failed, such hash has existed already");
return;
}
if (ctx->put_object(userKey, value) && ctx->put_object(hashKey, value)) {
ctx->ok("storeFileInfo success");
return;
}
ctx->error("storeFileInfo failed");
}
后续更新：
去除了智能合约中的唯一性约束代码：
if (ctx->get_object(hashKey, &tempVal)) {
ctx->error("storeFileInfo failed, such hash has existed already");
return;
多次使用不同的hash_id运行成功，两次使用相同的hash_id上链存储也成功运行。但是实际的区块链存证业务场景中要求对存证文件的唯一性约束，请问错误是处在SDK上还是智能合约上？

xchain.go

	utxoOutput := &pb.UtxoOutput{
		//		UtxoList: utxolist,
		//		TotalSelected: totalSelected.String(),
		UtxoList:      response.UtxoOutput.UtxoList,
		TotalSelected: response.UtxoOutput.TotalSelected,

"response.UtxoOutput" will be nil when invoke contract

error message

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xaa2475]

goroutine 1 [running]:
github.com/xuperchain/xuper-sdk-go/xchain.(*Xchain).GenRealTxOnly(0xc00026c010, 0xc0002967d0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/root/go/pkg/mod/github.com/xuperchain/[email protected]/xchain/xchain.go:479 +0xa5
github.com/xuperchain/xuper-sdk-go/xchain.(*Xchain).GenCompleteTxAndPost(0xc00026c010, 0xc0002967d0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/root/go/pkg/mod/github.com/xuperchain/[email protected]/xchain/xchain.go:745 +0x1097
github.com/xuperchain/xuper-sdk-go/contract.(*WasmContract).PostWasmContract(0xc00026c000, 0xc0002967d0, 0x0, 0x0, 0x0, 0x0)
	/root/go/pkg/mod/github.com/xuperchain/[email protected]/contract/contract.go:120 +0x416
github.com/xuperchain/xuper-sdk-go/contract.(*WasmContract).InvokeWasmContract(0xc00026c000, 0xbf6580, 0x8, 0xc0001a3e48, 0x0, 0x0, 0x0, 0x0)
	/root/go/pkg/mod/github.com/xuperchain/[email protected]/contract/contract.go:132 +0x205

make失败，go get github.com/xuperchain/xuper-sdk-go/v2 这个网址404

SDK版本

v2.0.0

问题描述

我想通过TxId查询判断当前这一笔交易有没有上链,但QueryTxByID()没有返回相关状态值。看下代码,貌似是有实现的但是并没有暴露出来。

QueryTx方法返回的是TxStatus结构体对象

对应的枚举值

不知道我的猜想是否正确,有没有什么方案？感谢！

请问有evm合约升级方法吗,我看sdk中只提供了native和wasm合约升级方法,另外通过解读源码发现,提示说关闭了evm升级,不知为何？

go test -race -coverprofile=coverage.txt -covermode=atomic ./account/... ./common/... ./xuper/...
go: github.com/btcsuite/[email protected]: Get "https://proxy.golang.org/github.com/btcsuite/btcutil/@v/v0.0.0-20190425235716-9e5f4b9a998d.mod": dial tcp 172.217.163.49:443: connect: connection refused
make: *** [test] Error 1

报错：panic: EndorserCall PreExecWithFee failed: rpc error: code = Unknown desc = error 17 - Error 17: execution reverted: execution reverted
sdk.yaml设置如下：

endorseServiceHost: "39.156.69.83:37100"
complianceCheck:
isNeedComplianceCheck: true
isNeedComplianceCheckFee: true
complianceCheckEndorseServiceFee: 400
complianceCheckEndorseServiceFeeAddr: aB2hpHnTBDxko3UoP2BpBZRujwhdcAFoT
complianceCheckEndorseServiceAddr: jknGxa6eyum1JrATWvSJKW3thJ9GKHA9n
minNewChainAmount: "100"
crypto: "xchain"
txVersion: 3
maxRecvMsgSize: 134217728

节点是拉的最新的代码 master 分支，配置成xpoa共识，返回报未实现？
retrieveAccount address: nuSMPvo6UUoTaT8mMQmHbfiRbJNbAymGh
2020/10/24 17:02:08 PreExecWithSelecUTXO EndorserCall failed, err: rpc error: code = Unimplemented desc = unknown service pb.xendorser
2020/10/24 17:02:08 CreateContractAccount err: EndorserCall error! Response is: rpc error: code = Unimplemented desc = unknown service pb.xendorser
exit status 255

SDK版本：0.2.0

Xchain 版本：5.1.0

使用Go SDK查询区块的Proposer返回有问题，请问是我解析的有问题还是返回的内容不正确，其他参数(PreHash 等)暂时没问题。

2021/01/18 09:03:09 start testDeployWasmContract......
W8GDt7ajEP4rh18FAgw7xnQg2P6Wg8BTh
account: &{W8GDt7ajEP4rh18FAgw7xnQg2P6Wg8BTh {"Curvname":"P-256","X":115647121523999615544642610898155919161143807124137510426248196191719673759457,"Y":6834714425167762045798660276280535385884829351045282705119506064327324275863,"D":83942495777393029042150863703958248121731008811406779280150121616048053996456} {"Curvname":"P-256","X":115647121523999615544642610898155919161143807124137510426248196191719673759457,"Y":6834714425167762045798660276280535385884829351045282705119506064327324275863} }
2021/01/18 09:03:16 Fee will cost: 171785
2021/01/18 09:03:16 contract response: initialize succeed
2021/01/18 09:03:16 ComplianceCheck txid: f3290e93d43354ed9213f4be49548ae317408080d0abe98ce0b63a540dcd45b4
2021/01/18 09:03:16 DeployWasmContract err: Failed to post tx: RWACL_INVALID_ERROR
panic: Failed to post tx: RWACL_INVALID_ERROR

运行main_trust_counter时遇到上面的问题，这个错误是怎么会是

请问：
1.调用合约返回信息中没有eventlog，那有办法在不使用订阅的情况下知道此次交易是否有eventlog吗？
2.我想同步非挖矿的交易信息，如果使用订阅所有块，返回的信息中只有交易hash，并不能区分出这个交易是出块奖励还是正常的交易，这个有办法吗？

github.com/xuperchain/[email protected]/protos/event.pb.go 代码：
func init() {
proto.RegisterEnum("protos.SubscribeType", SubscribeType_name, SubscribeType_value)
proto.RegisterType((*SubscribeRequest)(nil), "protos.SubscribeRequest")
proto.RegisterType((*Event)(nil), "protos.Event")
proto.RegisterType((*BlockRange)(nil), "protos.BlockRange")
proto.RegisterType((*BlockFilter)(nil), "protos.BlockFilter")
proto.RegisterType((*FilteredBlock)(nil), "protos.FilteredBlock")
proto.RegisterType((*FilteredTransaction)(nil), "protos.FilteredTransaction")
}

github.com/hyperledger/fabric-protos-go/blob/release-2.2/peer/events.pb.go 代码：
func init() {
proto.RegisterType((*FilteredBlock)(nil), "protos.FilteredBlock")
proto.RegisterType((*FilteredTransaction)(nil), "protos.FilteredTransaction")
proto.RegisterType((*FilteredTransactionActions)(nil), "protos.FilteredTransactionActions")
proto.RegisterType((*FilteredChaincodeAction)(nil), "protos.FilteredChaincodeAction")
proto.RegisterType((*BlockAndPrivateData)(nil), "protos.BlockAndPrivateData")
proto.RegisterMapType((map[uint64]*rwset.TxPvtReadWriteSet)(nil), "protos.BlockAndPrivateData.PrivateDataMapEntry")
proto.RegisterType((*DeliverResponse)(nil), "protos.DeliverResponse")
}

其中protos.FilteredBlock，protos.FilteredTransaction重复，导致编译后运行直接panic

之前用sdk v1.0.0做成功了，请问v2.0.0是否支持与开放网络部署的智能合约建立连接？
遇到报错如下

EndorserCall ComplianceCheck failed: rpc error: code = Unknown desc = fee not enough

请问,在调用合约得时候出现了这个错误:

请问是什么原因呢？

另外我看这个错误17 对应得枚举值为 XChainErrorEnum_ROOT_BLOCK_EXIST_ERROR 请问是不是这个枚举值呢？如何是什么情况下会出现这个错？

Description
Get directly config info from member variable，no more reloading from configuration file.

版本

• go v1.17
• xuper-sdk-go v2

问题

在我使用WatchBlockEvent()订阅方法时出现了以下错误：

对应源码:

tips: 报红是我导包出错得问题,不影响本问题

个人建议

监听方法当出现错误时支持重连逻辑

场景：

1. 使用的链地址（39.156.69.83:37100）
2. 本来想通过SDK部署本地编译的solidity合约到链上，提示合约账号UTXO不足；
3. 所以尝试通过普通账号给合约账号转账一些，结果出现TX_VERIFICATION_ERROR的错误？

这个合约账号是普通账号下的。

请问是什么原因？

请问
在合约部署的时候,我们消耗的gas&fee是使用普通账户里面的资产还是合约账户的资产?另外sdk中option有指定消耗资产选项WithFeeFromAccount(),如果不指定该选项,潜在意思是不是说消耗的资产是使用普通账户的资产？

版本

• go 1.17
• sdk v2.0.0
• chain 5.1.x

问题

我使用 xuper-sdk-go/v2 10次并发调用evm合约出现错误rpc error: code = Unknown desc = Err:500-50404-submit tx failed+err:this utxo can not be found,另外这10次调用key value值都不一样,合约方法很简单就是单纯得set值.另外我这也没有出现读写集错误问题，请问如何解决此问题？

调用参数内容:

调用返回错误值:

ps: 错误值前半部是业务拼接得错误描述

你好,麻烦看下,谢谢
go: github.com/btcsuite/[email protected]: Get "https://proxy.golang.org/github.com/btcsuite/btcutil/@v/v0.0.0-20190425235716-9e5f4b9a998d.mod": dial tcp 172.217.160.113:443: i/o timeout

请问
我使用订阅事件功能,我订阅solidity合约如何拿到emit抛出的数据内容？合约内容大概如下

对应event定义

然后下面的是对应订阅收到的数据内容

请问body里面的数据是对应我emit抛出的数据么？如果是我该怎么解析？

在利用solidity语言开发是，如ERC20、ERC721等，参数会经常传入以太坊0x的40位地址，这与xuper的16位地址不相同。
目前我是通过cli的形式在转换，既然cli已经支持，为什么sdk不加入该接口呢？

账户余额查询正确，执行transfer报错，错误信息如下：

2020/08/05 15:58:44 PreExecWithSelecUTXO EndorserCall failed, err: rpc error: code = DeadlineExceeded desc = context deadline exceeded
2020/08/05 15:58:44 Transfer PreExecWithSelecUTXO failed, err: EndorserCall error! Response is: rpc error: code = DeadlineExceeded desc = context deadline exceeded
Transfer err: EndorserCall error! Response is: rpc error: code = DeadlineExceeded desc = context deadline exceeded
transfer tx:

solidity代码如下：
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/// @Custom:security-contact [email protected]
contract Seatune is ERC20, Pausable, Ownable {
constructor() ERC20("Seatune", "TUN") {
_mint(msg.sender, 990000 * 10 ** decimals());
}

function pause() public onlyOwner {
    _pause();
}

function unpause() public onlyOwner {
    _unpause();
}

function mint(address to, uint256 amount) public onlyOwner {
    _mint(to, amount);
}

function _beforeTokenTransfer(address from, address to, uint256 amount)
    internal
    whenNotPaused
    override
{
    super._beforeTokenTransfer(from, to, amount);
}

}
当我执行继承自openzeppelin包的方法时，如果xuperIDE调试，结果如下：

如果用cli调用，也是一致的

唯独在调用sdk时，返回结果不一致，是一串代码

返回的结果是这样的

请问如何才能取到正确的返回数据？

使用go sdk时报错出现空指针异常

make 成功了，但 make test 的时候报以下错误
go test github.com/xuperchain/xuper-sdk-go/account
ok github.com/xuperchain/xuper-sdk-go/account 0.030s
go test github.com/xuperchain/xuper-sdk-go/transfer
ok github.com/xuperchain/xuper-sdk-go/transfer (cached)
go test github.com/xuperchain/xuper-sdk-go/common
ok github.com/xuperchain/xuper-sdk-go/common (cached)
go test github.com/xuperchain/xuper-sdk-go/contract_account
ok github.com/xuperchain/xuper-sdk-go/contract_account (cached)
go test github.com/xuperchain/xuper-sdk-go/contract
ok github.com/xuperchain/xuper-sdk-go/contract (cached)
go test github.com/xuperchain/xuper-sdk-go/xchain

github.com/xuperchain/xuper-sdk-go/xchain [github.com/xuperchain/xuper-sdk-go/xchain.test]

xchain/xchain_test.go:41:5: cli.Amount undefined (type *Xchain has no field or method Amount)
xchain/xchain_test.go:43:5: cli.To undefined (type *Xchain has no field or method To)
xchain/xchain_test.go:55:40: cli.Amount undefined (type *Xchain has no field or method Amount)
xchain/xchain_test.go:81:26: not enough arguments in call to cli.GenRealTx
have (*pb.PreExecWithSelectUTXOResponse, *pb.Transaction)
want (*pb.PreExecWithSelectUTXOResponse, *pb.Transaction, string)
xchain/xchain_test.go:92:6: assignment mismatch: 1 variable but cli.PostTx returns 2 values
xchain/xchain_test.go:104:5: cli.Amount undefined (type *Xchain has no field or method Amount)
xchain/xchain_test.go:106:5: cli.To undefined (type *Xchain has no field or method To)
xchain/xchain_test.go:118:40: cli.Amount undefined (type *Xchain has no field or method Amount)
xchain/xchain_test.go:143:44: cli.To undefined (type *Xchain has no field or method To)
xchain/xchain_test.go:143:52: cli.Amount undefined (type *Xchain has no field or method Amount)
xchain/xchain_test.go:143:52: too many errors
FAIL github.com/xuperchain/xuper-sdk-go/xchain [build failed]
FAIL
Makefile:20: recipe for target 'test' failed
make: *** [test] Error 2

现在，修改XPOA共识候选人列表只能通过命令行多签，调用修改。后续是否可以在 sdk 中添加对应的方法。

链接本地国密环境时sdk报错：[SM2-P-256] is not supported yet

另：使用注释方法GetCryptoClient() base.CryptoClient出现以下编译异常信息：

# github.com/xuperchain/xuper-sdk-go/account
..\account\account.go:32:27: ecdsaAccount.JsonPublicKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPublicKey, but does have JSONPublicKey)
..\account\account.go:33:27: ecdsaAccount.JsonPrivateKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPrivateKey, but does have JSONPrivateKey)
..\account\account.go:48:27: ecdsaAccount.JsonPublicKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPublicKey, but does have JSONPublicKey)
..\account\account.go:49:27: ecdsaAccount.JsonPrivateKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPrivateKey, but does have JSONPrivateKey)
..\account\account.go:75:27: ecdsaAccount.JsonPublicKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPublicKey, but does have JSONPublicKey)
..\account\account.go:76:27: ecdsaAccount.JsonPrivateKey undefined (type *"github.com/xuperchain/xuperchain/core/crypto/account".ECDSAAccount has no field or method JsonPrivateKey, but does have JSONPrivateKey)
..\account\account.go:91:40: cryptoClient.GetEcdsaPrivateKeyJsonFormatStr undefined (type base.CryptoClient has no field or method GetEcdsaPrivateKeyJsonFormatStr)
..\account\account.go:95:39: cryptoClient.GetEcdsaPublicKeyJsonFormatStr undefined (type base.CryptoClient has no field or method GetEcdsaPublicKeyJsonFormatStr)
# github.com/xuperchain/xuper-sdk-go/txhash
..\txhash\txhash.go:20:22: cryptoClient.HashUsingDoubleSha256 undefined (type base.CryptoClient has no field or method HashUsingDoubleSha256)
..\txhash\txhash.go:34:24: cryptoClient.HashUsingDoubleSha256 undefined (type base.CryptoClient has no field or method HashUsingDoubleSha256)

请教一下,我现在操作3.7版本的链需要支持,调用合约,安装合约等操作都会出现以下类似的错误,请问怎么解决呢？

出现的错误:

2022/02/18 17:40:48 GetConfig: &{************:37101 {false false 400 aB2hpHnTBDxko3UoP2BpBZRujwhdcAFoT jknGxa6eyum1JrATWvSJKW3thJ9GKHA9n} 100 xchain}
2022/02/18 17:40:48 PreExecWithSelecUTXO EndorserCall failed, err: rpc error: code = Unimplemented desc = unknown service pb.xendorser
2022/02/18 17:40:48 DeployWasmContract preExe failed, err: EndorserCall error! Response is: rpc error: code = Unimplemented desc = unknown service pb.xendorser
panic: EndorserCall error! Response is: rpc error: code = Unimplemented desc = unknown service pb.xendorser

另外我的skd配置内容如下,也没有配置xendorser开关什么的

endorseServiceHost: "*************"

complianceCheck:
  # 是否需要进行合规性背书
  isNeedComplianceCheck: false
  # 是否需要支付合规性背书费用
  isNeedComplianceCheckFee: false
  # 合规性背书费用
  complianceCheckEndorseServiceFee: 400
  # 支付合规性背书费用的收款地址
  complianceCheckEndorseServiceFeeAddr: aB2hpHnTBDxko3UoP2BpBZRujwhdcAFoT
  # 如果通过合规性检查，签发认证签名的地址
  complianceCheckEndorseServiceAddr: jknGxa6eyum1JrATWvSJKW3thJ9GKHA9n
#创建平行链所需要的最低费用
minNewChainAmount: "100"

# sdk调用生成账号相关的密码类型.简单来说生成的是否是国密算法。
crypto: "xchain"
txVersion: 1

我链的配置如下 xchain.yaml内容如下

# node config
# 日志配置
log:
  # 模块名称
  module: xchain
  # 日志目录
  filepath: logs
  # 日志文件名
  filename: xchain
  fmt: logfmt
  # 是否打印命令行工具端口
  console: true
  # 日志等级
  level: debug

# RPC 服务暴露的端口
tcpServer:
  port: :37101
  # prometheus监控指标端口, 为空的话就不启动
  metricPort: :37200
  tls: false
  #cachePeriod: 2
  # 最大接受数据包长度

# 区块链节点配置
p2p:
  # module is the name of p2p module plugin, value is [p2pv2/p2pv1], default is p2pv2
  module: p2pv2
  port: 47101
  #certPath: ./data/tls/1
  #serviceName: saas_test.server.com
  #bootNodes:
  #  - "/ip4/<ip>/tcp/<port>/p2p/<node_hash>" for p2pv2 or - "<ip>:<port>" for p2pv1
  #staticNodes:
  #  xuper:
  #    - "127.0.0.1:47102"

miner:
  # 密钥存储路径
  keypath: ./data/keys

# 数据存储路径
datapath: ./data/blockchain

# 多盘存储的路径
#datapathOthers:
#    - /ssd1/blockchain
#    - /ssd2/blockchain
#    - /ssd3/blockchain

utxo:
  # utxo的内存LRUCache大小，表示内存中最多缓存多少个UtxoItem
  cachesize: 2000000
  # GenerateTx的临时锁定期限，默认是60秒
  tmplockSeconds: 60
  #单个块的合约执行的总时间(单位ms)
  contractExecutionTime: 500

kernel:
  # minNewChainAmount 设置创建平行链时最少要转多少钱到同链名address
  minNewChainAmount: "100"
  newChainWhiteList:
    - dpzuVdosQrF2kmzumhVeFQZa1aYcdgFpN: true

# 管理native合约的配置
native:
  enable: false
  # 与部署相关的配置
  deploy:
    # 部署白名单，列表为钱包地址
    whiteList:
      enable: false
      addresses:
        - dpzuVdosQrF2kmzumhVeFQZa1aYcdgFpN

  # docker相关配置
  docker:
    enable: false
    # 合约运行的镜像名字
    imageName: "docker.io/centos:7.5.1804"
    # cpu核数限制，可以为小数
    cpus: 1
    # 内存大小限制
    memory: "1G"

  # 停止合约的等待秒数，超时强制杀死
  stopTimeout: 3

# 插件配置文件路径
pluginConfPath: "./conf/plugins.conf"

# 是否启用p2p核心节点直连
coreConnection: false

txidCacheExpiredTime: "10s"

# 是否压缩交易/区块
enableCompress: true

# 块广播模式
blockBroadcaseMode: 0

# 剪枝配置
prune:
  switch: false
  bcname: "xuper"
  targetBlockid: "xxx"

# wasm合约配置

wasm:
  driver: "xvm"
  enableUpgrade: false
  xvm:
    optLevel: 0

# 是否开启默认的XEndorser背书服务
enableXEndorser: false

我是用v2和v1.1版本的sdk都不行,恳求帮助

在并发场景下，容易因为引用同一utxo造成交易失败。

临时锁定utxo可增加交易成功率

account包的SetContractAccount方法，下图逻辑限制了16位，但是某些场景需要传入以太坊地址，由于该字段未export，所以在包外又无法修改

比如下图合约：

mint方法需要校验合约账户是否为owner，此时需要传入eth的40位地址，而不是xuper的16位地址

If a user want to use other languages that he is very good at to interact with our blockchain, he'll can use it in the following ways:

1. He can user our lib that we'll provide in the future
2. Develop his API by the language that he use

If we don't add this function, a user can't use our lib directly.

update the version of the dependency of xchain

在使用sdk有这样的场景,有人部署了一个native go得合约,或者我忘记了，现在我想调用这个合约，但是我不知道这个合约是什么类型，现在我用别得类型比如InvokeEVMContract() 方法去调用这个go合约就会出错，请问我如何能拿到合约module类型，如果没有可否考虑在QueryAddressContracts()方法或者QueryAccountContracts()方法中进行扩展？

sdk在无币模式下，部署和调用合约会触发空指针异常

// GenerateTxInput generate txinput part
func (xc *Xchain) GenerateTxInput(utxoOutputs *pb.UtxoOutput, totalNeed *big.Int) (
	[]*pb.TxInput, *pb.TxOutput, error) {
	// utxoList => TxInput
	//
	// gen txInputs
	var txInputs []*pb.TxInput
	var txOutput *pb.TxOutput

        //utxoOutputs是空对象
	for _, utxo := range utxoOutputs.UtxoList {
		txInput := &pb.TxInput{}
		txInput.RefTxid = utxo.RefTxid
		txInput.RefOffset = utxo.RefOffset
		txInput.FromAddr = utxo.ToAddr
		txInput.Amount = utxo.Amount
		txInputs = append(txInputs, txInput)
	}
}

错误描述

panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x90c047]

goroutine 6 [running]:
testing.tRunner.func1(0xc0000f2300)
	/usr/local/go/src/testing/testing.go:874 +0x3a3
panic(0x9ad1e0, 0xf36b90)
	/usr/local/go/src/runtime/panic.go:679 +0x1b2
github.com/xuperchain/xuper-sdk-go/xchain.(*Xchain).GenerateTxInput(0xc0002a6420, 0x0, 0xc000303b60, 0x0, 0x1, 0x40db86, 0x12, 0x0, 0xc0002ca310)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/xchain/xchain.go:208 +0x37
github.com/xuperchain/xuper-sdk-go/xchain.(*Xchain).GenComplianceCheckTx(0xc0002a6420, 0xc0000a2870, 0x20, 0xc0002aee00, 0x3a)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/xchain/xchain.go:99 +0xa1
github.com/xuperchain/xuper-sdk-go/xchain.(*Xchain).GenCompleteTxAndPost(0xc0002a6420, 0xc0000a2870, 0xa81602, 0x1, 0x2, 0xc0002aee00)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/xchain/xchain.go:407 +0x4d
github.com/xuperchain/xuper-sdk-go/contract.(*WasmContract).PostWasmContract(0xc0002a6410, 0xc0000a2870, 0xa821d8, 0x25, 0xa6a20d, 0x1)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/contract/contract.go:100 +0x141
github.com/xuperchain/xuper-sdk-go/contract.(*WasmContract).DeployWasmContract(0xc0002a6410, 0xc0000e3e20, 0xa821d8, 0x25, 0xa6a20d, 0x1, 0x8, 0xa78ad3, 0x18, 0xc0002a6410)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/contract/contract.go:52 +0x126
github.com/xuperchain/xuper-sdk-go/contract.TestJason(0xc0000f2300)
	/home/jason/桌面/github.com/xuperchain/xuper-sdk-go/contract/contract_test.go:216 +0x2fb
testing.tRunner(0xc0000f2300, 0xa9c368)
	/usr/local/go/src/testing/testing.go:909 +0xc9
created by testing.(*T).Run
	/usr/local/go/src/testing/testing.go:960 +0x350