使用PUT方法上传资源

一些服务器支持以PUT方法上传单个资源到目标路径，请求体的内容即为资源内容。可以用-T或--upload-file指定本地文件用于上传：

$ echo -n 'hello world' > /tmp/greeting.txt
$ curl -T /tmp/greeting.txt http://localhost:8080

================================
Request 7
================================

PUT /greeting.txt HTTP/1.1
Host: localhost:8080
Accept: */*
Content-Length: 11
User-Agent: curl/8.10.1

hello world

可以看出，-T其实是一种快捷方式，我们可以用-X和--data-binary的组合实现同样的请求：

$ curl -X PUT -H 'Content-Type:' --data-binary @/tmp/greeting.txt http://localhost:8080

================================
Request 9
================================

PUT / HTTP/1.1
Host: localhost:8080
Accept: */*
Content-Length: 11
User-Agent: curl/8.10.1

hello world