gralde生成Q类 idea

1. 生成Q类：

　　IDEA ->File-> Settings-> Build, Execution, Deployment->Compiler->Annotation Processors

　　选择右侧的Enable annotation processing(右侧第一行)

　　选择Module content root(右侧第4行)

　　点击Apply

　　点击OK

2. 如果不生效，则copy如下部分到build.gradle中，然后鼠标移到 runAPT 方法的内部，右键，Run 'projectName[runAPT]'

生成Q类后，在generaed文件夹上，右键Mark Directory as -> Generated Sources Root 即可

ext {
    querydslGeneratedSourcesDir = file("$projectDir/src/main/generated")
}
//单独运行QueryDSL的APT来生成Q源代码
task runAPT(type: JavaCompile) {
    doFirst {
        /*
         * This is a workaround to delete the file that will be created by the annotation processor if it already exists.
         * There is a known bug in the Java compiler and JDK 8 which should be fixed at JDK 9.
         * http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8067747 <-- Master report
         * http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8146348 <-- duplicates master report
         */
        if ( querydslGeneratedSourcesDir.exists() ) {
            FileCollection collection = files { querydslGeneratedSourcesDir.listFiles() }
            collection.each { delete it }
        }
        querydslGeneratedSourcesDir.mkdirs()

        println "classpath:"+classpath.getFiles()
        println "Generate QueryDsl CLass..."
        println "options:"+options
        println "options.compilerArgs:"+options.compilerArgs

        println "AnnotationProcessorPath for $name is ${options.getAnnotationProcessorPath().getFiles()}"
    }

    source = sourceSets.main.java.srcDirs
    destinationDir = sourceSets.main.java.outputDir

    classpath = configurations.compileClasspath + configurations.annotationProcessor
    options.annotationProcessorPath = classpath  //@wjw_note: 设置这个annotationProcessorPath很关键

    options.encoding = 'UTF-8'
    options.deprecation = true
    options.compilerArgs += ["-parameters","-Xlint:deprecation"]

    options.compilerArgs += ['-proc:only']
    options.compilerArgs += ['-processor', 'com.querydsl.apt.jpa.JPAAnnotationProcessor']
    options.compilerArgs += ['-s', querydslGeneratedSourcesDir]  //设定生成的Q类存放的位置
    options.compilerArgs += ["-Aquerydsl.excludedPackages=xyz.erupt.upms,xyz.erupt.bi"]  //设定QueryDsl要排除的包列表(逗号来分割)
}

　　

其中runAPT来自： https://blog.csdn.net/wjw465150/article/details/126669946