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添加前

添加后

解决办法

• 在setting.gradle中添加
  maven{url=“https://maven.aliyun.com/repository/public/”}
• 文件代码如下

pluginManagement {
    repositories {
        maven{url="https://maven.aliyun.com/repository/public/"}
        gradlePluginPortal()
        google()
        mavenCentral()
    }
}
dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {

//        maven{ url = “https://maven.aliyun.com/repository/public/” }
        google()
        mavenCentral()
    }
}
rootProject.name = "Mqtt"
include ':app'