Express之get,pos请求参数的获取

Express的版本4.X

Get

query参数的获取

url假设:http://localhost:3000/users/zqzjs?name=zhaoqize&word=cool&job[st]=web

路由的定义:

1.获取?name=zhaoqize这样的参数

req.query.name

2.获取&job[st]=web这样的参数

req.query.job.st

3.获取?name=zhaoqize参数的另外一种写法(4.x版本中该方法已被废弃)

req.param('name')

4.获取所有参数

JSON.stringify(req.query)

具体代码:

req.params:

"+(JSON.stringify(req.params) || '')+"

" + "

req.params.name:

"+(req.params.name || '')+"

" + "Query:" + "

req.query:

"+(JSON.stringify(req.query) || '')+"

" + "

req.query.name:

"+(req.query.name || '')+"

" + "

req.query.word:

"+(req.query.word || '')+"

"+ "

req.query.job.st:

"+(req.query.job.st || '')+"

" + "

req.param('name'):

"+(req.param('name') || '')+"

" ;

res.send(_html);
});

结果:

req.params.name:zqzjs

Query:

req.query:{"name":"zhaoqize","word":"cool","job":{"st":"web"}}

req.query.name:zhaoqize

req.query.word:cool

req.query.job.st:web

req.param('name'):zqzjs

Post

1.获取需要的query参数

req.body.pName

具体代码:

req.body:

"+(JSON.stringify(req.body) || '')+"

" + "

req.body.name:

"+(req.body.pName || '')+"

" + "

req.body.name:

"+(req.body.pWord || '')+"

"; res.send(_html); })

结果:

req.body.name:zqz

req.body.name:job

其他信息

获取请求的头信息

使用:req.header(field)

" _html += "[Accept-Encoding] "+req.header('Accept-Encoding')+"
" _html += "[Accept-Language] "+req.header('Accept-Language')+"
" _html += "[Cache-Control] "+req.header('Cache-Control')+"
" _html += "[Connection] "+req.header('Connection')+"
" _html += "[Cookie] "+req.header('Cookie')+"
" _html += "[Host] "+req.header('Host')+"
" _html += "[If-None-Match] "+req.header('If-None-Match')+"
" _html += "[Upgrade-Insecure-Requests] "+req.header('Upgrade-Insecure-Requests')+"
" _html += "[User-Agent] "+req.header('User-Agent')+"
" res.send(_html); })

//结果:
[Accept] text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8
[Accept-Encoding] gzip,deflate,sdch,br
[Accept-Language] zh-CN,zh;q=0.8,en-US;q=0.6,en;q=0.4,ja;q=0.2
[Cache-Control] max-age=0
[Connection] keep-alive
[Cookie] Hm_lvt_4f16d955a2236fc6ca7287644ecc9d79=1480576847,1481166685
[Host] localhost:3000
[If-None-Match] W/"23b-OjTNcZfCLTvw659CYGlLrA"
[Upgrade-Insecure-Requests] 1
[User-Agent] Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/54.0.2840.99 Safari/537.36

使用:req.route

",keys: [ ],regexp: { },method: "get" } ],methods: { get: true } }

cookies

使用:req.cookies

//结果：
{
Hm_lvt_4f16d955a2236fc6ca7287644ecc9d79: "1480576847,1481166685"
}

hostname

使用:req.hostname

//结果:
localhost

ip

使用:req.ip

//结果:
::1

originalUrl

使用:req.originalUrl

//结果:
/users/originalUrl/get

protocol

使用:req.protocol

//结果:
http

secure

使用:req.secure

说明:用来判断协议是否安全,如果是https，返回的就是true

//结果:
false

xhr

使用:req.xhr

说明:判断是否是异步请求

//结果:
false

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持编程之家!