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Express的版本4.X
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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:
router.get('/:name', function(req, res, next) { })
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:
//http://localhost:3000/users/zqzjs?name=zhaoqize&word=cool&job[st]=web //http://localhost:3000/users/zqzjs router.get('/:name', function(req, res, next) { //4.版本中已被废弃,不建议使用 req.param('name') console.log(JSON.stringify(req.query) || '') //获取get请求参数 var _html = "Params"+ "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:
[Get] Params req.params:{"name":"zqzjs"} 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
post的数据获取
Form Data pName:zqz pWord:job
1.获取需要的query参数
req.body.pName
具体代码:
router.post('/postTest',function(req, res, next){ var _html = "[Post]" + "req.body:"+(JSON.stringify(req.body) || '')+"
" + "req.body.name:"+(req.body.pName || '')+"
" + "req.body.name:"+(req.body.pWord || '')+"
"; res.send(_html); })
结果:
[Post] req.body:{"pName":"zqz","pWord":"job"} 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)
//http://localhost:3000/users/requestInfo/get router.get('/requestInfo/get',function(req, res, next){ var _html = ""; _html += "[Accept] "+req.header('Accept')+"
" _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
route
使用:req.route
//http://localhost:3000/users/router/get router.get('/router/get',function(req, res, next){ res.send(req.route); }) //结果: { path: "/router/get", stack: [ { name: "", keys: [ ], regexp: { }, method: "get" } ], methods: { get: true } }
cookies
使用:req.cookies
//http://localhost:3000/users/cookies/get router.get('/cookies/get',function(req, res, next){ res.send(req.cookies); }) //结果: { Hm_lvt_4f16d955a2236fc6ca7287644ecc9d79: "1480576847,1481166685" }
hostname
使用:req.hostname
//http://localhost:3000/users/hostname/get router.get('/hostname/get',function(req, res, next){ res.send(req.hostname); }) //结果: localhost
ip
使用:req.ip
//http://localhost:3000/users/ip/get router.get('/ip/get',function(req, res, next){ res.send(req.ip); }) //结果: ::1
originalUrl
使用:req.originalUrl
//http://localhost:3000/users/originalUrl/get router.get('/originalUrl/get',function(req, res, next){ res.send(req.originalUrl); }) //结果: /users/originalUrl/get
protocol
使用:req.protocol
//http://localhost:3000/users/protocol/get router.get('/protocol/get',function(req, res, next){ res.send(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
//http://localhost:3000/users/secure/get router.get('/secure/get',function(req, res, next){ res.send(req.secure); }) //结果: false
xhr
使用:req.xhr
说明:判断是否是异步请求
//http://localhost:3000/users/xhr/get router.get('/xhr/get',function(req, res, next){ res.send(req.xhr); }) //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创新互联!