npm安装cnpm时候报错code EINTEGRITY

npm安装cnpm时候报错code EINTEGRITY
错误展现

PS C:\Users\by\Desktop\element_ui_demo> npm install --g  npm
npm ERR! code EINTEGRITY
npm ERR! sha512-DowXzQwtSWDtbAjuWecuEiismR0VdNEYaL3VxNTYTdW6AGkYxfGk9LUZ/rt6etEyiH4IEk95HkJeGfXE5Rz9xQ== integrity checksum failed when using sha512: wanted sha512-DowXzQwtSWDtbAjuWecuEiismR0VdNEYaL3VxNTYTdW6AGkYxfGk9LUZ/rt6etEyiH4IEk95HkJeGfXE5Rz9xQ== but got sha512-tHlXGeHDDxcwcfwJc/dRDLcLCtuq5y9ATPgiG9tkyLom4u9Yqc+nRbk0JI7c2biglh8jwsUIseBIivimVFmZQg==. (5156776 bytes)

缘由是npm版本太低解决办法
npm

1.若是有package-lock.json文件,就删掉json

2.管理员权限进入cmdvim

3.执行npm cache clean --forceui

4.以后再npm install -g npm
spa

5.npm -v查看版本code

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