Kotlin Corda-包含该软件包的CorDapp不止一个

我正在构建一个需要多个应用程序的应用程序；让我们称它们为LibCorDapp和AppCorDapp，其中AppCorDapp取决于LibCorDapp（就像CorDapp可能取决于帐户或代币SDK）

LibCorDapp-合同 此CorDapp的目的是定义状态和契约的对象模型，这些对象模型可以开箱即用，但也可以从中派生，以创建更明确的状态和契约类型

build.gradle

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name cordapp_contract_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    workflow {
        name cordapp_workflow_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name "Test CorDapp Contract"
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

示例状态

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name cordapp_contract_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    workflow {
        name cordapp_workflow_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name "Test CorDapp Contract"
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

package com.example.libcordapp.contract
@BelongsToContract（示例contract:：class）
开放类示例状态(
覆盖val参与者：List=emptyList（），
val值：T
)：ContractState{…}

合同示例

package com.example.libcordapp.contract
开放类范例合同{
最终覆盖验证（tx:LedgerTransaction）{…}
受保护的open fun onVerifyCreate（tx:LedgerTransaction，签名者：Set）=单位
}

注意

ExampleState

和

ExampleContract

之间的关系。它们都是

open

，并且

ExampleContract

包含一个可重写的函数，允许派生类在创建时指定额外的契约逻辑

LibCorDapp-工作流 此CorDapp的目的是定义允许创建、更新和使用示例状态的流。这些流还应适用于从

ExampleState

和

examplestract

派生的状态和契约

build.gradle

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name cordapp_contract_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    workflow {
        name cordapp_workflow_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name "Test CorDapp Contract"
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

示例流

package com.example.libcordapp.workflow
类ExampleFlow（val状态：ExampleState）：FlowLogic（）{
@暂停
重写趣味调用（）：SignedTransaction{
val tx=与（TransactionBuilder（公证人））{
addOutputState（状态）
addCommand（例如contract.Issue、signers）
}
}
}

注意，我没有为输出状态显式定义契约ID，因为它应该在运行时为每个契约/状态对确定

AppCorDapp-合同 本CorDapp的目的是演示一个应用程序的示例，该应用程序使用LibCorDapp，创建和测试派生状态和契约

build.gradle

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name cordapp_contract_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    workflow {
        name cordapp_workflow_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name "Test CorDapp Contract"
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

问候状态

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name cordapp_contract_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    workflow {
        name cordapp_workflow_name
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    cordaCompile "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

cordapp {
    targetPlatformVersion cordapp_platform_version
    minimumPlatformVersion cordapp_platform_version
    contract {
        name "Test CorDapp Contract"
        vendor cordapp_vendor_name
        licence cordapp_license
        versionId cordapp_version_id
    }
    signing {
        enabled = cordapp_signing_enabled
    }
}

dependencies {
    implementation "$kotlin_group:kotlin-stdlib-jdk8:$kotlin_version"
    implementation "$corda_group:corda-core:$corda_release_version"
    cordapp project(":libcordapp-contract")

    testRuntimeOnly "$junit_group:junit-jupiter-engine:$junit_version"
    testImplementation "$junit_group:junit-jupiter-api:$junit_version"
    testImplementation "$kotlin_group:kotlin-test:$kotlin_version"
    testImplementation "$corda_group:corda-node-driver:$corda_release_version"
}

package com.example.appcordapp.contract
@BelongsToContract（GreetingContract:：class）
类问候状态(
参与者：List=emptyList（）
value:String=“你好，世界！”
)：ExampleState（参与者、值）

问候合同

package com.example.appcordapp.contract
类迎宾合同：示例合同{
override fun onVerifyCreate（tx:LedgerTransaction，signers:Set）=requireThat{…}
}

请注意，

GreetingContract

扩展了

ExampleContract

和

GreetingState

扩展了

ExampleContract

，并将

GreetingContract

定义为相关合同，因此在使用

ExampleFlow

创建

GreetingState

时，它应该选择此合同

实际上，AppCorDapp-Workflow模块中没有定义流，因为我明确希望测试我是否可以将

ExampleFlow

与我的派生状态/契约对一起使用

测试与问题 对于我的测试，我定义了以下应用程序：

cordappsForAllNodes=listOf(
TestCordapp.findCordapp（“com.example.libcordapp.contract”），
TestCordapp.findCordapp（“com.example.libcordapp.workflow”），
TestCordapp.findCordapp（“com.example.appcordapp.contract”）
)

尝试使用

ExampleFlow

创建

GreetingClaim

时

ExampleFlow（欢迎索赔（参与者=listOf（partyA）））

…我得到以下异常：

java.lang.IllegalArgumentException:类路径[/…/libcordapp-contract-0.1.jar，/…/libcordapp-workflow-0.1.jar]上有多个包含包com.example.appcordapp.contract的CorDapp。指定CorDapp唯一的程序包名称

---

我假设这要么是因为gradle，要么是因为我使用的是派生状态和契约？

阅读有关的官方文档，然后阅读；我建议您将

AppCorDapp-contract的
build.gradle
内部
cordapp项目（“：libcordapp-contract”）更改为
cordaCompile项目（“：libcordapp-contract”）

在当前的依赖项设置（即使用
cordapp
）中，
libcordapp-contract
包含在cordapp的jar文件中，因此当您运行测试时，可以在两个位置找到包：
libcordapp-contract
和
AppCorDapp-contract
CorDapps；如果将依赖项更改为
cordaCompile
，则该包将仅包含在
LibCorDapp-Contract
CorDapp的jar文件中。
阅读有关的官方文档，并阅读；我建议您将
AppCorDapp-contract的
build.gradle
内部
cordapp项目（“：libcordapp-contract”）更改为
cordaCompile项目（“：libcordapp-contract”）

在当前的依赖项设置（即使用
cordapp
）中，
libcordapp-contract
包含在cordapp的jar文件中，因此当您运行测试时，可以在两个位置找到包：
libcordapp-contract
和
AppCorDapp-contract
CorDapps；如果将依赖项更改为
cordaCompile
，则该包将仅包含在
LibCorDapp-Contract
CorDapp的jar文件中。
遗憾的是，我得到了与
cordaCompile
相同的结果：（如果