如何修复Visual Studio+LibGDX项目中‘core不存在导致无法构建’错误

我使用Visual Studio、JDK 17和LibGDX进行桌面开发，代码可正常运行，但无法使用自动补全功能，也看不到错误下划线提示。通过GitHub跨设备协作开发，最初构建项目时无此问题，经过几次提交后，两台设备出现该问题，另一台设备正常。目前还遇到「因core不存在导致项目无法构建」的错误，求修复方案。

core模块 build.gradle #

sourceCompatibility = 1.8
[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'

sourceSets.main.java.srcDirs = [ "src/" ]

eclipse.project.name = appName + "-core"

desktop模块 build.gradle #

sourceCompatibility = 1.8
sourceSets.main.java.srcDirs = [ "src/" ]
sourceSets.main.resources.srcDirs = ["../assets"]

project.ext.mainClassName = "com.mygdx.game.DesktopLauncher"
project.ext.assetsDir = new File("../assets")

import org.gradle.internal.os.OperatingSystem

tasks.register('run', JavaExec) {
    dependsOn classes
    mainClass = project.mainClassName
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = project.assetsDir
    ignoreExitValue = true

    if (OperatingSystem.current() == OperatingSystem.MAC_OS) {
        // Required to run on macOS
        jvmArgs += "-XstartOnFirstThread"
    }
}

tasks.register('debug', JavaExec) {
    dependsOn classes
    mainClass = project.mainClassName
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = project.assetsDir
    ignoreExitValue = true
    debug = true
}

tasks.register('dist', Jar) {
    duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
    manifest {
        attributes 'Main-Class': project.mainClassName
    }
    dependsOn configurations.runtimeClasspath
    from {
        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
    }
    with jar
}


dist.dependsOn classes

eclipse.project.name = appName + "-desktop"

根目录 build.gradle #

buildscript {
    

    repositories {
        mavenLocal()
        mavenCentral()
        gradlePluginPortal()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        google()
    }
    dependencies {
        

    }
}

allprojects {
    apply plugin: "eclipse"

    version = '1.0'
    ext {
        appName = "Mario"
        gdxVersion = '1.12.1'
        roboVMVersion = '2.3.20'
        box2DLightsVersion = '1.5'
        ashleyVersion = '1.7.4'
        aiVersion = '1.8.2'
        gdxControllersVersion = '2.2.1'
    }

    repositories {
        mavenLocal()
        mavenCentral()
        google()
        gradlePluginPortal()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        maven { url "https://oss.sonatype.org/content/repositories/releases/" }
        maven { url "https://jitpack.io" }
    }
}

project(":desktop") {
    apply plugin: "java-library"


    dependencies {
        implementation project(":core")
        api "com.badlogicgames.gdx:gdx-backend-lwjgl3:$gdxVersion"
        api "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
        
    }
}

project(":core") {
    apply plugin: "java-library"


    dependencies {
        api "com.badlogicgames.gdx:gdx:$gdxVersion"
        
    }
}

settings.gradle #

include 'desktop', 'core'

• 同步Gradle并清理缓存

  1. 在Visual Studio中执行Gradle: Refresh Gradle Project命令，强制IDE重新识别所有模块
  2. 删除项目根目录下的.gradle、.vs（Visual Studio缓存目录）文件夹，以及core/desktop模块下的build目录
  3. 打开终端执行gradle clean build，重新构建项目

• 修正版本兼容问题
  将core和desktop模块build.gradle中的sourceCompatibility = 1.8改为sourceCompatibility = 17，与使用的JDK 17版本保持一致，避免编译版本不匹配导致的IDE识别异常

• 检查模块与目录结构

  1. 确认settings.gradle中include 'desktop', 'core'的模块都存在于项目根目录下，core文件夹与desktop同级
  2. 检查core模块的src目录是否存在且包含Java源文件，确保sourceSets.main.java.srcDirs = [ "src/" ]指向正确路径

• 修复IDE语言服务

  1. 在Visual Studio的项目设置中，确认core模块被标记为Java源模块，未被排除在语言服务扫描范围外
  2. 重启Visual Studio，清除IDE的缓存，确保语言服务重新加载项目配置

• 检查Git提交完整性

  1. 查看.gitignore文件，确认没有误忽略core模块的src目录或build.gradle文件
  2. 同步GitHub仓库时，确保core模块的所有必要文件都已提交到远程仓库，本地拉取完整的项目文件

内容的提问来源于stack exchange，提问作者Jack Lander