修改镜像源：改为阿里云镜像
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
报错：Content-Length mismatch, received 523324 bytes out of the expected 605211
处理：
修改缓存文件大小配置：composer config cache-files-maxsize 800MiB
修改镜像源：改为阿里云镜像
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
报错：Content-Length mismatch, received 523324 bytes out of the expected 605211
处理：
修改缓存文件大小配置：composer config cache-files-maxsize 800MiB