java-sdk 常见问题¶

标签：JAVA SDK 问题排查

1. java sdk如何解析交易的input¶

解决方法 2.8.1 添加了如下接口支持交易input解析:

public Pair<List<Object>, List<ABIObject>> decodeTransactionInput(String ABI, String input);
public List<String> decodeTransactionInputToString(String ABI, String input);

对应的PR可参考 PR #360 目前版本已经正式发布，可引入2.8.1以及以上的版本。

2. maven环境 java-sdk2.7.2 引用 io.netty4.1.66 错误¶

问题描述 gradle 环境，java-sdk2.7.2 引用的 io.netty4.1.53 运行正常； maven 环境，java-sdk2.7.2 引用的 io.netty4.1.66 运行失败。

问题分析 原因：io.netty4.1.66 缺失 internal 包；

解决方法

第一种: 升级java-sdk版本至java-sdk 2.9.0+

Maven:

 <dependency>
  <groupId>org.fisco-bcos.java-sdk</groupId>
  <artifactId>fisco-bcos-java-sdk</artifactId>
  <version>2.9.1</version>
 </dependency>

Gradle:

implementation("org.fisco-bcos.java-sdk:fisco-bcos-java-sdk:2.9.1")

第二种:

强制使用低版本netty

<dependency>
  <groupId>io.netty</groupId>
  <artifactId>netty-all</artifactId>
  <version>4.1.53.Final</version>
 </dependency>

 <dependency>
  <groupId>org.fisco-bcos.java-sdk</groupId>
  <artifactId>fisco-bcos-java-sdk</artifactId>
  <version>2.7.2</version>
  <exclusions>
   <exclusion>
    <groupId>io.netty</groupId>
    <artifactId>netty-all</artifactId>
   </exclusion>
  </exclusions>
 </dependency>

3. Java SDK没有原生支持从 jar 包中加载证书¶

问题描述 将 Java SDK 以及 SDK证书 打入到 jar 包后，通过 java -jar 的方式运行demo，提示报错:

org.fisco.bcos.sdk.channel.ChannelImp    : init channel network error, Not providing all the certificates to connect to the node! Please provide the certificates to connect with the block-chain.

解决办法 目前 2.8.0+ 已经支持直接加载jar包中的证书，可以通过下面方式引入：

Gradle:

implementation('org.fisco-bcos.java-sdk:fisco-bcos-java-sdk:2.9.1')

Maven:

<dependency>
    <groupId>org.fisco-bcos.java-sdk</groupId>
    <artifactId>fisco-bcos-java-sdk</artifactId>
    <version>2.9.1</version>
</dependency>

基于 Spring boot 封装 java sdk 请参考: https://github.com/FISCO-BCOS/spring-boot-crud/tree/master-2.0

4. sdk国密版连接时所需的包重复依赖netty，导致冲突¶

问题描述 ../../_images/import_package_conflict.png

解决办法 SDK国密SSL连接修改了tcnative，可能会导致netty冲突，若出现无法加载bcosSDK，可以通过依赖解析来查找对应冲突，建议指定netty版本到 SDK依赖的最低netty版本，即 4.1.53

5. 创建BcosSDK时出现warning，是否有影响¶

问题描述 执行下列代码时出现警告信息 get method for EC5Util failed, method name: convertSpec

String configFile = Test.class.getClassLoader().getResource("config.toml").getPath();
BcosSDK sdk = BcosSDK.build(configFile);

日志如下：

2021-03-29 16:39:27,703 INFO [org.fisco.bcos.sdk.BcosSDK] - create BcosSDK, configPath: /C:/Users/Wang/IdeaProjects/fisco-bcos/target/classes/config.toml
2021-03-29 16:39:28,094 INFO [org.fisco.bcos.sdk.network.ConnectionManager] - all connections, size: 1, list: [ConnectionInfo{host='172.16.40.100', port=20200}]
2021-03-29 16:39:28,828 INFO [org.fisco.bcos.sdk.network.ConnectionManager] - build ECDSA ssl context with configured certificates
2021-03-29 16:39:31,499 INFO [org.fisco.bcos.sdk.network.ChannelHandler] - handshake success, host: 172.16.40.100, port: 20200, ctx: 2102505486
2021-03-29 16:39:31,609 INFO [org.fisco.bcos.sdk.channel.ChannelImp] - node: ClientVersion{version='2.7.2', supportedVersion='2.7.2', chainId='1', buildTime='20210201 10:03:03', buildType='Linux/clang/Release', gitBranch='HEAD', gitCommitHash='4c8a5bbe44c19db8a002017ff9dbb16d3d28e9da'}, content: {"id":0,"jsonrpc":"2.0","result":{"Build Time":"20210201 10:03:03","Build Type":"Linux/clang/Release","Chain Id":"1","FISCO-BCOS Version":"2.7.2","Git Branch":"HEAD","Git Commit Hash":"4c8a5bbe44c19db8a002017ff9dbb16d3d28e9da","Supported Version":"2.7.2"}}

2021-03-29 16:39:31,609 INFO [org.fisco.bcos.sdk.channel.ChannelImp] - support channel handshake node
2021-03-29 16:39:31,609 INFO [org.fisco.bcos.sdk.channel.ChannelImp] - channel protocol handshake success, set socket channel protocol, host: 172.16.40.100:20200, channel protocol: ChannelProtocol [protocol=3, nodeVersion=2.7.2, EnumProtocol=VERSION_3]
2021-03-29 16:39:31,656 INFO [org.fisco.bcos.sdk.channel.ChannelImp] - Connect to nodes: 172.16.40.100:20200, java version: 1.8.0_241 ,java vendor: Oracle Corporation
2021-03-29 16:39:31,656 INFO [org.fisco.bcos.sdk.BcosSDK] - create BcosSDK, start channel success, cryptoType: 0
2021-03-29 16:39:31,671 INFO [org.fisco.bcos.sdk.BcosSDK] - create BcosSDK, start channel succ, channelProcessorThreadSize: 4, receiptProcessorThreadSize: 4
2021-03-29 16:39:31,687 INFO [org.fisco.bcos.sdk.service.GroupManagerServiceImpl] - registerBlockNumberNotifyHandler
2021-03-29 16:39:31,687 INFO [org.fisco.bcos.sdk.service.GroupManagerServiceImpl] - registerTransactionNotifyHandler
2021-03-29 16:39:31,718 INFO [org.fisco.bcos.sdk.BcosSDK] - create BcosSDK, create groupManagerService success
2021-03-29 16:39:32,315 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,315 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,505 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,505 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,521 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,537 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,552 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,552 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,552 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,552 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,583 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,583 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,599 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,599 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,630 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,630 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,646 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,646 WARN [org.fisco.bcos.sdk.crypto.keystore.KeyTool] - get method for EC5Util failed, method name: convertSpec
2021-03-29 16:39:32,646 INFO [org.fisco.bcos.sdk.amop.AmopImp] - update subscribe inform 1 peers
2021-03-29 16:39:32,646 INFO [org.fisco.bcos.sdk.amop.AmopImp] - amop module started
2021-03-29 16:39:32,646 INFO [org.fisco.bcos.sdk.amop.AmopImp] - update subscribe inform 1 peers
2021-03-29 16:39:32,646 INFO [org.fisco.bcos.sdk.BcosSDK] - create BcosSDK, create Amop success

回答不影响。这个 WARN 是为了解决对bc库的兼容引入的，没有任何影响。后续版本我们看看优化日志输出。