我有一个项目,有Maven、Kotlin、QueryDSL、Spring Boot和MongoDB。它工作得相当好,但我认为迁移到Gradle可以加快构建它。在我开始用QueryDSL移动模块之前,一切都很好。结果发现我无法为用@Document注释的Kotlin类生成Q类,那么有没有办法解决呢?Document例子(放在kotlin目录下的srcmainkotlincomcompany)。
package ...
import org.springframework.data.annotation.Id
import org.springframework.data.mongodb.core.mapping.Document
@Document(collection = "myDocument")
data class MyDocument(
val smth: String
)
maven(负责生成的那块)
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<configuration>
<args>
<arg>-Werror</arg>
</args>
<annotationProcessors>
org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor
</annotationProcessors>
<compilerPlugins>
<plugin>spring</plugin>
</compilerPlugins>
</configuration>
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-noarg</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-allopen</artifactId>
<version>${kotlin.version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/main/java</sourceDir>
</sourceDirs>
</configuration>
<goals>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>kapt</id>
<goals>
<goal>kapt</goal>
</goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/main/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
</sourceDirs>
</configuration>
<goals>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
</plugin>
对于gradle+kotlin来说,AFAIU我们必须使用kapt来生成Q类,具体做法是这样的
kapt("com.querydsl:querydsl-apt:4.2.1:jpa")
但对我来说,我的新build.gradle.kts.却不能工作。
import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
id("org.springframework.boot") version "2.2.0.RELEASE"
id("io.spring.dependency-management") version "1.0.8.RELEASE"
kotlin("jvm") version "1.3.50"
kotlin("kapt") version "1.3.50"
kotlin("plugin.jpa") version "1.3.50"
id("org.jetbrains.kotlin.plugin.spring") version "1.3.21"
}
apply(plugin = "kotlin")
apply(plugin = "kotlin-kapt")
apply(plugin = "kotlin-jpa")
apply(plugin = "org.springframework.boot")
apply(plugin = "io.spring.dependency-management")
group = "com.example"
version = "0.0.1-SNAPSHOT"
java.sourceCompatibility = JavaVersion.VERSION_1_8
repositories {
mavenCentral()
}
dependencies {
implementation("org.springframework.boot:spring-boot-starter-data-jpa")
implementation("com.querydsl:querydsl-jpa")
implementation("com.querydsl:querydsl-apt")
kapt("com.querydsl:querydsl-apt:4.2.1:jpa")
kapt("org.springframework.boot:spring-boot-starter-data-jpa")
kapt("org.springframework.boot:spring-boot-configuration-processor")
kapt("org.springframework.data:spring-data-mongodb:2.2.0.RELEASE")
implementation("org.springframework.boot:spring-boot-starter-data-mongodb")
implementation("org.jetbrains.kotlin:kotlin-reflect")
implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
testImplementation("org.springframework.boot:spring-boot-starter-test") {
exclude(group = "org.junit.vintage", module = "junit-vintage-engine")
}
}
//sourceSets { main["kotlin"].srcDirs += [generated] }
//val querydslSrcDir = "src/main/generated"
tasks.withType<Test> {
useJUnitPlatform()
}
tasks.withType<KotlinCompile> {
kotlinOptions {
freeCompilerArgs = listOf("-Xjsr305=strict")
jvmTarget = "1.8"
}
}
在maven中,我可以精确地设置注解处理器(org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor),但在gradle中,我不知道如何实现。
你应该添加 implementation("com.querydsl:querydsl-mongodb")
和 kapt("com.querydsl:querydsl-apt")
在 dependencies
节。
然后在 dependencies
部分。
kapt {
annotationProcessor("org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor")
}
另外,别忘了把那些JPA的依赖关系也去掉。