Express之get,pos请求参数的获取

query参数的获取

url假设::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"+ "<p><strong>req.params:</strong>"+(JSON.stringify(req.params) || '')+"</p>" + "<p><strong>req.params.name:</strong>"+(req.params.name || '')+"</p>" + "Query:" + "<p><strong>req.query:</strong>"+(JSON.stringify(req.query) || '')+"</p>" + "<p><strong>req.query.name:</strong>"+(req.query.name || '')+"</p>" + "<p><strong>req.query.word:</strong>"+(req.query.word || '')+"</p>"+ "<p><strong>req.query.job.st:</strong>"+(req.query.job.st || '')+"</p>" + "<p><strong>req.param('name'):</strong>"+(req.param('name') || '')+"</p>" ; 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]" + "<p><strong>req.body:</strong>"+(JSON.stringify(req.body) || '')+"</p>" + "<p><strong>req.body.name:</strong>"+(req.body.pName || '')+"</p>" + "<p><strong>req.body.name:</strong>"+(req.body.pWord || '')+"</p>"; 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')+"<br/>" _html += "[Accept-Encoding] "+req.header('Accept-Encoding')+"<br/>" _html += "[Accept-Language] "+req.header('Accept-Language')+"<br/>" _html += "[Cache-Control] "+req.header('Cache-Control')+"<br/>" _html += "[Connection] "+req.header('Connection')+"<br/>" _html += "[Cookie] "+req.header('Cookie')+"<br/>" _html += "[Host] "+req.header('Host')+"<br/>" _html += "[If-None-Match] "+req.header('If-None-Match')+"<br/>" _html += "[Upgrade-Insecure-Requests] "+req.header('Upgrade-Insecure-Requests')+"<br/>" _html += "[User-Agent] "+req.header('User-Agent')+"<br/>" 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: "<anonymous>", 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