官方的太慢了，下载一个半天
参考： https://blog.csdn.net/guodeqiangde/article/details/78239408?utm_medium=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase&depth_1-utm_source=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase
