todo post的几种提交方式. x-www-form-urlencoded和form-data区别?

Content Type:

x-www-form-urlencoded:application/x-www-form-urlencoded
form-data:multipart/form-data; boundary={boundary string}

todo

https://stackoverflow.com/questions/4007969/application-x-www-form-urlencoded-or-multipart-form-data
https://dev.to/getd/x-www-form-urlencoded-or-form-data-explained-in-2-mins-5hk6

总结:
如果你有二进制(即非字母)数据或者很大文件的传输,使用multipart/form-data,否则使用application/x-www-form-urlencoded.因为传送大文件multipart/form-data会更高效,因为他占用更少的空间.