https://img-mid.csdnimg.cn/release/static/image/mid/ask/221773637166117.png
尝试过的方法
搜索 google()然后添加 以下三个 maven ，最终如下
repositories {
maven { url 'https://maven.minecraftforge.net/' }
maven { url 'https://maven.aliyun.com/repository/public' }
maven { url 'https://maven.aliyun.com/repository/google' }
google()
mavenCentral()
}
更多可参考 https://github.com/SpongePowered/MixinGradle
jar没拉下来，用阿里的镜像仓库试试