谢谢
前面对restful的概念都说的很清楚了,我这里补充一点,下面是个get请求, 我这里就懒得抓包了,直接在chrome的console中拷贝来的,你说的从报文的方式分析, 我可以直接告诉你本质区别
我觉得get和post的本质区别应该是参数放在哪里的区别,
get是放在header中的(所以长度有限制,是浏览器对url长度的限制),post是放在body中的(长度没有限制),
如果你问我header和body有什么区别,我也只能呵呵了(建议自己抓包看), 都是tcp数据流,header和body是 两个 /r/n 分开的
get Remote Address:222.186.132.183:80
Request URL:http://qiniu-plupload.qiniudn.com/bb.png?imageView2/1/w/100/h/100
Request Method:GET
Status Code:200 OK
Response Headers
view source
Accept-Ranges:bytes
Access-Control-Allow-Origin:*
Access-Control-Max-Age:2592000
Cache-Control:public, max-age=31536000
Connection:keep-alive
Content-Length:15509
Content-Type:image/png
Date:Wed, 29 Apr 2015 07:01:08 GMT
ETag:"ALCDKnR1WgNfUxiMBRwEuXoe76OQ"
Server:nginx/1.4.4
X-Log:mc.g/404;mc.g:2;RS:2;mc.s;DC/404;FOPDC/404;FOPAGENT;IMAGE:239;FOPAGENT:240;FOPAGENT;IMAGE:239;FOPAGENT:240;FOPG:241;FOPAGENT;IO:249
X-Qiniu-Zone:0
X-Reqid:YVQAABBhtnn3adkT
X-Via:1.1 tzh57:8110 (Cdn Cache Server V2.0), 1.1 zhenjiang157:10 (Cdn Cache Server V2.0)
X-Whom:nb263
Request Headers
view source
Accept:image/webp,*/*;q=0.8
Accept-Encoding:gzip, deflate, sdch
Accept-Language:zh-CN,zh;q=0.8
Cache-Control:no-cache
Connection:keep-alive
Host:qiniu-plupload.qiniudn.com
Pragma:no-cache
RA-Sid:DE49CAE2-20141215-034718-ab4eeb-10884d
RA-Ver:2.10.0
Referer:http://jssdk.demo.qiniu.io/
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36
Query String Parameters
view source
view URL encoded
imageView2/1/w/100/h/100:
Remote Address:183.136.139.10:80
Request URL:http://up.qiniu.com/
Request Method:POST
Status Code:200 OK
Response Headers
view source
Access-Control-Allow-Headers:X-File-Name, X-File-Type, X-File-Size
Access-Control-Allow-Methods:OPTIONS, HEAD, POST
Access-Control-Allow-Origin:*
Access-Control-Max-Age:2592000
Cache-Control:no-store, no-cache, must-revalidate
Connection:keep-alive
Content-Length:54
Content-Type:application/json
Date:Wed, 29 Apr 2015 07:01:08 GMT
Pragma:no-cache
Server:nginx/1.4.4
X-Content-Type-Options:nosniff
X-Log:s.ph;s.put.tw;s.put.tr:5;s.put.tw:1;s.put.tr:4;s.ph;s.put.tw:1;s.put.tr:5;s.ph;PFDS:12;PFDS:13;PFDS:14;rdb.g/no such key;DBD/404;DBG/404;v4.exist:1/Document not found;rs12_9.ins;qtbl.ins:2;mc.s;RS:3;rs.put:4;rs-upload.putFile:20;UP:27
X-Reqid:-zwAABHcpXL3adkT
Request Headers
view source
Accept:*/*
Accept-Encoding:gzip, deflate
Accept-Language:zh-CN,zh;q=0.8
Cache-Control:no-cache
Connection:keep-alive
Content-Length:620773
Content-Type:multipart/form-data; boundary=----WebKitFormBoundaryb5PfXDf4M1oCl5QM
Host:up.qiniu.com
Origin:http://jssdk.demo.qiniu.io
Pragma:no-cache
RA-Sid:DE49CAE2-20141215-034718-ab4eeb-10884d
RA-Ver:2.10.0
Referer:http://jssdk.demo.qiniu.io/
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36
Request Payload
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="name"
bb.png
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="chunk"
0
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="chunks"
1
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="key"
bb.png
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="token"
0MLvWPnyya1WtPnXFy9KLyGHyFPNdZceomLVk0c9:d5M0tc6IYvvXMsWeqXN-_cJHEd0=:eyJzY29wZSI6InFpbml1LXBsdXBsb2FkIiwiZGVhZGxpbmUiOjE0MzAyOTQ0NDd9
------WebKitFormBoundaryb5PfXDf4M1oCl5QM
Content-Disposition: form-data; name="file"; filename="bb.png"
Content-Type: image/png
------WebKitFormBoundaryb5PfXDf4M1oCl5QM--
我觉得get和post的本质区别应该是参数放在哪里的区别,
get是放在header中的(所以长度有限制,是浏览器对url长度的限制),post是放在body中的(长度没有限制),
我这里贴的post是form-data 格式的,
有很多人会把post中的 x-www-form-urlencoded方式 和get 请求搞混,因为在服务端,好多语言框架对这两种请求获取参数的方式差不多
下面可以看一下 x-www-form-urlencoded 方式
POST http://www.example.com HTTP/1.1
Content-Type: application/x-www-form-urlencoded;charset=utf-8
title=test&sub%5B%5D=1&sub%5B%5D=2&sub%5B%5D=3
这篇文章 讲的很清楚