Kotlin-gRPC：错误：不兼容的类型：NonExistentClass 无法转换为注解 @error.NonExistentClass()

Question

我从 micronaut.lanch 下载了一个简单的 grpc 项目，在添加 Kotlin gRPC 插件之前我可以构建它。

除了 build.gradle.kts 的变化之外，除了原来的 scafolded 项目之外别无他物。

我在 build.gradle.kts 中编辑过。

首先，为了匹配 IntelliJ Kotlin 版本

plugins {
    id("org.jetbrains.kotlin.jvm") version "1.4.21"
    id("org.jetbrains.kotlin.kapt") version "1.4.21"
    id("org.jetbrains.kotlin.plugin.allopen") version "1.4.21"

其次，为 kotlin grpc proto 自动生成的文件添加了文件夹

sourceSets {
    main {
        java {
...
            srcDirs ("build/generated/source/proto/main/grpckt")

最后

protobuf {
    protoc {
        artifact = "com.google.protobuf:protoc:3.14.0"
    }
    plugins {
        id("grpc") {
            artifact = "io.grpc:protoc-gen-grpc-java:1.33.1"
        }
        id("grpckt")
            { artifact = "io.grpc:protoc-gen-grpc-kotlin:0.1.2" }
    }
    generateProtoTasks {
        ofSourceSet("main").forEach {
            it.plugins {
                // Apply the "grpc" plugin whose spec is defined above, without options.
                id("grpc")
                id("grpckt")
            }
        }
    }
}

从 INtelliJ 或从命令行直接构建时的结果是

C:\_d\toLearn\kafka-proto\build\tmp\kapt3\stubs\main\com\test\KafkaProtoServiceGrpcKt.java:35: error: incompatible types: NonExistentClass cannot be converted to Annotation
    @error.NonExistentClass()

***已编辑

tasks {
    compileKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
        dependsOn ="generateProto" //how add this ?????
    }
    compileTestKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
    }


}

*** 编辑 2

我尝试了另一个项目。我从头开始，再次陷入同样的​​问题。

这里是 build.gradle

plugins {
    id("org.jetbrains.kotlin.jvm") version "1.4.10"
    id("org.jetbrains.kotlin.kapt") version "1.4.10"
    id("org.jetbrains.kotlin.plugin.allopen") version "1.4.10"
    id("com.github.johnrengelman.shadow") version "6.1.0"
    id("io.micronaut.application") version "1.2.0"
    id("com.google.protobuf") version "0.8.13"
}

version = "0.1"
group = "com.tolearn"

repositories {
    mavenCentral()
    jcenter()
}

micronaut {
    testRuntime("junit5")
    processing {
        incremental(true)
        annotations("com.tolearn.*")
    }
}

//https://stackoverflow.com/a/55646891/4148175
//kapt {
//    correctErrorTypes true
//}

dependencies {

    //implementation("io.grpc:protoc-gen-grpc-kotlin:1.0.0")

    implementation("io.micronaut:micronaut-validation")
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:${kotlinVersion}")
    implementation("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}")
    implementation("io.micronaut.kotlin:micronaut-kotlin-runtime")
    implementation("io.micronaut:micronaut-runtime")
    implementation("io.micronaut.grpc:micronaut-grpc-runtime")
    implementation("javax.annotation:javax.annotation-api")
    implementation("io.micronaut:micronaut-http-client")
    implementation("io.micronaut:micronaut-tracing")

    runtimeOnly("io.jaegertracing:jaeger-thrift")
    runtimeOnly("ch.qos.logback:logback-classic")
    runtimeOnly("com.fasterxml.jackson.module:jackson-module-kotlin")
}


application {
    mainClass.set("com.tolearn.ApplicationKt")
}

java {
    sourceCompatibility = JavaVersion.toVersion("11")
}

tasks {
    compileKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
        dependsOn ':generateProto'
    }
    compileTestKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
    }


}

sourceSets {
    main {
        java {
            srcDirs("build/generated/source/proto/main/grpc")
            srcDirs 'build/generated/source/proto/main/grpckt'
            srcDirs("build/generated/source/proto/main/java")
        }
    }
}

protobuf {
    protoc { artifact = "com.google.protobuf:protoc:3.14.0" }
    plugins {
        grpc { artifact = "io.grpc:protoc-gen-grpc-java:1.33.1" }
        grpckt { artifact = "io.grpc:protoc-gen-grpc-kotlin:1.0.0:jdk7@jar"}
    }
    generateProtoTasks {
        all()*.plugins {
            grpc {}
            grpckt {}
        }
    }
}

问题是在自动生成的存根上提出的

这里是完整代码github

Answer 1

我通过添加 api("io.grpc:grpc-kotlin-stub:1.0.0") 解决了这个问题，感谢https://github.com/grpc/grpc-kotlin/issues/220 的帮助。

所以我的 build.gradle 现在是：

plugins {
    id("org.jetbrains.kotlin.jvm") version "1.4.10"
    id("org.jetbrains.kotlin.kapt") version "1.4.10"
    id("org.jetbrains.kotlin.plugin.allopen") version "1.4.10"
    id("com.github.johnrengelman.shadow") version "6.1.0"
    id("io.micronaut.application") version "1.2.0"
    id("com.google.protobuf") version "0.8.13"
}

version = "0.1"
group = "com.tolearn"

repositories {
    mavenCentral()
    jcenter()
}

micronaut {
    testRuntime("junit5")
    processing {
        incremental(true)
        annotations("com.tolearn.*")
    }
}

//https://stackoverflow.com/a/55646891/4148175
//https://kotlinlang.org/docs/reference/kapt.html
//kapt {
//    correctErrorTypes true
//    useBuildCache = false
//}

dependencies {

    implementation("io.grpc:protoc-gen-grpc-kotlin:1.0.0")
    api("io.grpc:grpc-kotlin-stub:1.0.0")

    implementation("io.micronaut:micronaut-validation")
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:${kotlinVersion}")
    implementation("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}")
    implementation("io.micronaut.kotlin:micronaut-kotlin-runtime")
    implementation("io.micronaut:micronaut-runtime")
    implementation("io.micronaut.grpc:micronaut-grpc-runtime")
    implementation("javax.annotation:javax.annotation-api")
    implementation("io.micronaut:micronaut-http-client")
    implementation("io.micronaut:micronaut-tracing")

    runtimeOnly("io.jaegertracing:jaeger-thrift")
    runtimeOnly("ch.qos.logback:logback-classic")
    runtimeOnly("com.fasterxml.jackson.module:jackson-module-kotlin")
}


application {
    mainClass.set("com.tolearn.ApplicationKt")
}

java {
    sourceCompatibility = JavaVersion.toVersion("11")
}

tasks {
    compileKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
        dependsOn ':generateProto'
    }
    compileTestKotlin {
        kotlinOptions {
            jvmTarget = "11"
        }
    }


}

sourceSets {
    main {
        java {
            srcDirs("build/generated/source/proto/main/grpc")
            srcDirs 'build/generated/source/proto/main/grpckt'
            srcDirs("build/generated/source/proto/main/java")
        }
    }
}

protobuf {
    protoc { artifact = "com.google.protobuf:protoc:3.14.0" }
    plugins {
        grpc { artifact = "io.grpc:protoc-gen-grpc-java:1.33.1" }
        grpckt { artifact = "io.grpc:protoc-gen-grpc-kotlin:1.0.0:jdk7@jar"}
    }
    generateProtoTasks {
        all()*.plugins {
            grpc {}
            grpckt {}
        }
    }
}