首先改镜像

composer config -g repo.packagist composer https://packagist.composer-proxy.org
composer config -g repo.packagist composer https://p.staticq.com 
composer config -g repo.packagist composer https://packagist.phpcomposer.com

清除缓存

composer clearcache

composer.json加入以下内容

"repositories": {
        "packagist": {
            "type": "composer",
            "url": "https://packagist.phpcomposer.com"
        }
    }

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可以飞了

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