682 lines
21 KiB
JavaScript
682 lines
21 KiB
JavaScript
/**
|
||
* Request组件, modern版, 支持IE9+,chrome,FF
|
||
* @authors yutent (yutent@doui.cc)
|
||
* @date 2016-11-27 13:08:40
|
||
*
|
||
*/
|
||
|
||
"use strict";
|
||
define(['yua'], function(yua){
|
||
var _request = function(url, protocol){
|
||
this.transport = true
|
||
protocol = (protocol + '').trim().toUpperCase()
|
||
this.xhr = Xhr()
|
||
this.opt = {
|
||
url: (url + '').trim(),
|
||
type: protocol || 'GET',
|
||
form: '',
|
||
data: {},
|
||
headers: {},
|
||
timeoutID: 0,
|
||
uuid: Math.random().toString(16).substr(2)
|
||
}
|
||
},
|
||
_requestp = _request.prototype,
|
||
toS = Object.prototype.toString,
|
||
win = window,
|
||
doc = win.document,
|
||
encode = encodeURIComponent,
|
||
decode = decodeURIComponent,
|
||
noop = function(e, res){
|
||
if(e)
|
||
throw new Error(e + '')
|
||
};
|
||
|
||
// -----------------------------
|
||
|
||
// 本地协议判断正则
|
||
var rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/
|
||
var isLocal = false
|
||
try{
|
||
isLocal = rlocalProtocol.test(location.ptyperotocol)
|
||
}catch(e){}
|
||
|
||
|
||
var rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg
|
||
|
||
// ----------------- 一些兼容性预处理 --------------------
|
||
|
||
win.Xhr = function(){
|
||
return new XMLHttpRequest()
|
||
}
|
||
var supportCors = 'withCredentials' in Xhr()
|
||
|
||
// ------------------- 几个解释方法 -----------------------
|
||
|
||
|
||
|
||
function serialize(p, obj, q){
|
||
var k
|
||
if(Array.isArray(obj)){
|
||
obj.forEach(function(it, i){
|
||
k = p ? (p + '[' + (Array.isArray(it) ? i : '') + ']') : i
|
||
if(typeof it === 'object'){
|
||
serialize(k, it, q)
|
||
}else{
|
||
q(k, it)
|
||
}
|
||
})
|
||
}else{
|
||
for(var i in obj){
|
||
k = p ? (p + '[' + i + ']') : i
|
||
if(typeof obj[i] === 'object'){
|
||
serialize(k, obj[i], q)
|
||
}else{
|
||
q(k, obj[i])
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
var Format = function(){}
|
||
|
||
Format.prototype = {
|
||
parseJS: function(code){
|
||
code = (code + '').trim()
|
||
if(code){
|
||
if(code.indexOf('use strict') === 1){
|
||
var script = doc.createElement('script')
|
||
script.text = code
|
||
doc.head
|
||
.appendChild(script)
|
||
.parentNode
|
||
.removeChild(script)
|
||
}else{
|
||
eval(code)
|
||
}
|
||
}
|
||
},
|
||
parseXML: function(data, xml, tmp){
|
||
try{
|
||
tmp = new DOMParser();
|
||
xml = tmp.parseFromString(data, 'text/xml');
|
||
}catch(e){
|
||
xml = void 0;
|
||
}
|
||
|
||
if(!xml ||
|
||
!xml.documentElement ||
|
||
xml.getElementsByTagName('parsererror').length){
|
||
console.error('Invalid XML: ' + data)
|
||
}
|
||
return xml
|
||
},
|
||
parseHTML: function (html){
|
||
return yua.parseHTML(html)
|
||
},
|
||
param: function(obj){
|
||
if(!obj || typeof obj === 'string' || typeof obj === 'number')
|
||
return obj
|
||
|
||
var arr = []
|
||
var q = function(k, v){
|
||
if(/native code/.test(v))
|
||
return
|
||
|
||
v = (typeof v === 'function') ? v() : v
|
||
v = (toS.call(v) !== '[object File]') ? encode(v) : v
|
||
|
||
arr.push(encode(k) + '=' + v)
|
||
}
|
||
|
||
if(typeof obj === 'object')
|
||
serialize('', obj, q)
|
||
|
||
return arr.join('&')
|
||
},
|
||
parseForm: function(form){
|
||
var data = {}
|
||
for(var i = 0,field; field = form.elements[i++];){
|
||
|
||
switch(field.type){
|
||
case 'select-one':
|
||
case 'select-multiple':
|
||
if(field.name.length && !field.disabled){
|
||
for(var j = 0, opt;opt = field.options[j++];){
|
||
if(opt.selected){
|
||
data[field.name] = opt.value || opt.text
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case 'file':
|
||
if(field.name.length && !field.disabled){
|
||
data[field.name] = field.files[0]
|
||
}
|
||
break;
|
||
case undefined:
|
||
case 'submit':
|
||
case 'reset':
|
||
case 'button':
|
||
break; //按钮啥的, 直接忽略
|
||
case 'radio':
|
||
case 'checkbox':
|
||
// 只处理选中的
|
||
if(!field.checked)
|
||
break;
|
||
default:
|
||
if(field.name.length && !field.disabled){
|
||
data[field.name] = field.value
|
||
}
|
||
|
||
}
|
||
|
||
}
|
||
return data
|
||
},
|
||
merge: function(a, b){
|
||
if(typeof a !== 'object' || typeof b !== 'object')
|
||
throw new TypeError('argument must be an object')
|
||
|
||
if(Object.assign)
|
||
return Object.assign(a, b)
|
||
|
||
for(var i in b){
|
||
a[i] = b[i]
|
||
}
|
||
return a
|
||
}
|
||
}
|
||
|
||
|
||
var F = new Format()
|
||
|
||
|
||
// ---------------------------------------------------------
|
||
// -------------------- request 模块开始 --------------------
|
||
// ---------------------------------------------------------
|
||
|
||
|
||
var requestConvert = {
|
||
text: function(val){
|
||
return val
|
||
},
|
||
xml: function(val, xml){
|
||
return xml !== undefined ? xml : F.parseXML(val)
|
||
},
|
||
html: function(val){
|
||
return F.parseHTML(val)
|
||
},
|
||
json: function(val){
|
||
return JSON.parse(val)
|
||
},
|
||
script: function(val){
|
||
return F.parseJS(val)
|
||
},
|
||
jsonp: function(name){
|
||
var json = request.cache[name]
|
||
delete request.cache[name];
|
||
return json
|
||
}
|
||
}
|
||
var requestExtend = {
|
||
formData: function(){
|
||
|
||
if(this.opt.form){
|
||
var data = F.parseForm(this.opt.form)
|
||
F.merge(this.opt.data, data)
|
||
}
|
||
|
||
var form = new FormData()
|
||
for(var i in this.opt.data){
|
||
var el = this.opt.data[i]
|
||
if(Array.isArray(el)){
|
||
el.forEach(function(it){
|
||
form.append(i + '[]', it)
|
||
})
|
||
}else{
|
||
form.append(i, this.opt.data[i])
|
||
}
|
||
}
|
||
return form
|
||
|
||
},
|
||
jsonp: function(jsonpcallback){
|
||
win[jsonpcallback] = function(val){
|
||
delete win[jsonpcallback]
|
||
request.cache[jsonpcallback] = val
|
||
}
|
||
},
|
||
dispatch: function(self){
|
||
|
||
|
||
if(!this.transport)
|
||
return
|
||
|
||
var _this = this,
|
||
result = {
|
||
response: {
|
||
url: this.opt.url,
|
||
headers: {'content-type': ''}
|
||
},
|
||
request: {
|
||
url: this.opt.url,
|
||
headers: _this.opt.headers
|
||
},
|
||
status: self === null ? 504 : 200,
|
||
statusText: self === null ? 'Connected timeout' : 'ok',
|
||
text: '',
|
||
body: '',
|
||
error: null
|
||
};
|
||
|
||
//状态为4,既已成功, 则清除超时
|
||
clearTimeout(_this.opt.timeoutID);
|
||
|
||
if(typeof this.transport === 'object'
|
||
&& this.opt.type === 'JSONP'){
|
||
|
||
//移除script
|
||
// this.transport.parentNode.removeChild(this.transport);
|
||
|
||
//超时返回
|
||
if(self !== null){
|
||
var exec = !this.transport.readyState
|
||
|| this.transport.readyState === 'loaded'
|
||
|| this.transport.readyState === 'complete';
|
||
|
||
if(exec){
|
||
result.body = requestConvert.jsonp(this.opt.data.callback)
|
||
result.text = JSON.stringify(result.body)
|
||
}
|
||
}
|
||
|
||
this.callback(result.error, result)
|
||
|
||
}else{
|
||
|
||
//成功的回调
|
||
var isSucc = self ? ((self.status >= 200 && self.status < 300) || self.status === 304) : false,
|
||
headers = self && self.getAllResponseHeaders().split('\n') || [];
|
||
|
||
//处理返回的Header
|
||
headers.forEach(function(it, i){
|
||
it = it.trim()
|
||
if(it){
|
||
it = it.split(':')
|
||
result.response.headers[it.shift().toLowerCase()] = it.join(':').trim()
|
||
}
|
||
|
||
});
|
||
|
||
|
||
if(isSucc){
|
||
result.status = self.status
|
||
if(result.status === 204){
|
||
result.statusText = 'no content'
|
||
}else if(result.status === 304){
|
||
result.statusText = 'not modified'
|
||
}
|
||
}else{
|
||
result.status = self === null ? 504 : (self.status || 500)
|
||
result.statusText = self === null ? 'Connected timeout' : (self.statusText || 'Internal Server Error')
|
||
result.error = F.merge(new Error(result.statusText), {status: result.status})
|
||
}
|
||
|
||
try{
|
||
//处理返回的数据
|
||
var dataType = result.response.headers['content-type'].match(/json|xml|script|html/i) || ['text']
|
||
|
||
dataType = dataType[0].toLowerCase()
|
||
result.text = self && (self.responseText || self.responseXML) || ''
|
||
result.body = requestConvert[dataType](result.text, self && self.responseXML)
|
||
}catch(err){
|
||
result.error = err
|
||
result.statusText = 'parse error'
|
||
}
|
||
|
||
_this.callback(result.error, result)
|
||
|
||
|
||
|
||
}
|
||
delete _this.transport;
|
||
delete _this.opt
|
||
delete _this.xhr
|
||
|
||
|
||
}
|
||
}
|
||
|
||
// 设置表单类型, 支持2种, form/json
|
||
_requestp.type = function(t){
|
||
if(this.opt.formType === 'form-data')
|
||
return this
|
||
|
||
this.opt.formType = t || 'form'
|
||
if(t === 'form' || this.opt.type === 'GET')
|
||
this.set('content-type', 'application/x-www-form-urlencoded; charset=UTF-8')
|
||
else
|
||
this.set('content-type', 'application/json; charset=UTF-8')
|
||
|
||
return this
|
||
}
|
||
|
||
//设置头信息
|
||
_requestp.set = function(k, val){
|
||
if(!this.transport)
|
||
return
|
||
|
||
if(typeof k === 'object'){
|
||
for(var i in k){
|
||
i = i.toLowerCase()
|
||
this.opt.headers[i] = k[i]
|
||
}
|
||
|
||
}else if(typeof k === 'string'){
|
||
if(arguments.length < 2)
|
||
throw new Error('2 arguments required')
|
||
|
||
// 全转小写,避免重复写入
|
||
k = k.toLowerCase()
|
||
|
||
if(val === undefined)
|
||
delete this.opt.headers[k]
|
||
else
|
||
this.opt.headers[k] = val
|
||
}else{
|
||
throw new Error('arguments must be string/object, but [' + (typeof k) + '] given')
|
||
}
|
||
return this
|
||
}
|
||
|
||
//设置请求参数
|
||
_requestp.send = function(k, val){
|
||
|
||
if(!this.transport)
|
||
return
|
||
|
||
// 1. send方法可以多次调用, 但必须保证格式一致
|
||
// 2. 2次圴提交纯字符串也会抛出异常
|
||
if(typeof k === 'object'){
|
||
if(this.opt.data && (typeof this.opt.data === 'string'))
|
||
throw new Error('param can not be string and object at the same time')
|
||
if(!this.opt.data)
|
||
this.opt.data = {}
|
||
|
||
F.merge(this.opt.data, k)
|
||
}else{
|
||
if(typeof k === 'string'){
|
||
if(arguments.length === 1){
|
||
if(this.opt.data)
|
||
throw new Error('invalid param in function send')
|
||
|
||
this.opt.data = k
|
||
}else{
|
||
if(this.opt.data && (typeof this.opt.data === 'string'))
|
||
throw new Error('param can not be string and object at the same time')
|
||
|
||
if(!this.opt.data)
|
||
this.opt.data = {}
|
||
|
||
this.opt.data[k] = val
|
||
}
|
||
|
||
}else{
|
||
throw new Error('argument of send must be string/object, but [' + (typeof k) + '] given')
|
||
}
|
||
|
||
}
|
||
|
||
return this
|
||
}
|
||
|
||
//该方法用于 form-data类型的post请求的参数设置
|
||
_requestp.field = function(k, val){
|
||
|
||
if(!this.transport)
|
||
return this
|
||
|
||
// 此类型优先级最高
|
||
this.opt.formType = 'form-data'
|
||
this.opt.type = 'POST'
|
||
if(!this.opt.data || (this.opt.data && typeof this.opt.data !== 'object'))
|
||
this.opt.data = {}
|
||
|
||
if(arguments.length === 1 && typeof k === 'object'){
|
||
F.merge(this.opt.data, k)
|
||
}else if(arguments.length === 2){
|
||
this.opt.data[k] = val
|
||
}else{
|
||
throw new TypeError('argument must be an object, but ' + (typeof k) + ' given')
|
||
}
|
||
return this
|
||
}
|
||
|
||
|
||
//设置缓存
|
||
_requestp.cache = function(t){
|
||
if(!this.transport)
|
||
return
|
||
|
||
if(this.opt.type === 'GET')
|
||
this.opt.cache = !!t
|
||
|
||
return this
|
||
}
|
||
|
||
|
||
//取消网络请求
|
||
_requestp.abort = function(){
|
||
delete this.transport
|
||
if(!this.opt.form)
|
||
this.xhr.abort()
|
||
|
||
return this
|
||
}
|
||
|
||
//超时设置, 单位毫秒
|
||
_requestp.timeout = function(time){
|
||
if(typeof time !== 'number' || time < 1)
|
||
return this
|
||
|
||
this.opt.timeout = time
|
||
return this
|
||
}
|
||
|
||
|
||
_requestp.form = function(form){
|
||
if(typeof form === 'object' && form.nodeName === 'FORM'){
|
||
this.opt.type = 'POST'
|
||
this.opt.form = form
|
||
}
|
||
|
||
return this
|
||
}
|
||
|
||
|
||
var originAnchor = doc.createElement('a');
|
||
originAnchor.href = location.href;
|
||
_requestp.end = function(callback){
|
||
var _this = this;
|
||
// 回调已执行, 或已取消, 则直接返回, 防止重复执行
|
||
if(!this.transport)
|
||
return this
|
||
|
||
if(!this.opt.url)
|
||
throw new Error('Invalid request url')
|
||
|
||
F.merge(this, requestExtend)
|
||
|
||
this.callback = callback || noop
|
||
|
||
// 1. url规范化
|
||
this.opt.url = this.opt.url.replace(/#.*$/, '').replace(/^\/\//, location.protocol + '//')
|
||
|
||
|
||
// 2. 处理跨域
|
||
if(typeof this.opt.crossDomain !== 'boolean'){
|
||
var anchor = doc.createElement('a')
|
||
try{
|
||
anchor.href = this.opt.url
|
||
// IE7及以下浏览器 '1'[0]的结果是 undefined
|
||
// IE7下需要获取绝对路径
|
||
var absUrl = !'1'[0] ? anchor.getAttribute('href', 4) : anchor.href
|
||
anchor.href = absUrl
|
||
anchor.async = true
|
||
this.opt.crossDomain = (originAnchor.protocol !== anchor.protocol) || (originAnchor.host !== anchor.host)
|
||
}catch(e){
|
||
this.opt.crossDomain = true
|
||
}
|
||
}
|
||
|
||
// 2.1 进一步处理跨域配置
|
||
if(this.opt.type === 'JSONP'){
|
||
//如果没有跨域，自动转回xhr GET
|
||
if(!this.opt.crossDomain){
|
||
this.opt.type = 'GET';
|
||
}else{
|
||
this.opt.data['callback'] = this.opt.data['callback'] || ('jsonp' + request.cid++);
|
||
this.jsonp(this.opt.data['callback']); //创建临时处理方法
|
||
}
|
||
}
|
||
// 2.2 如果不是跨域请求，则自动加上一条header信息，用以标识这是ajax请求
|
||
if(!this.opt.crossDomain){
|
||
this.set('X-Requested-With', 'XMLHttpRequest')
|
||
}else{
|
||
supportCors && (this.xhr.withCredentials = true)
|
||
}
|
||
|
||
|
||
// 3. data转字符串
|
||
this.opt.param = F.param(this.opt.data)
|
||
|
||
|
||
// 4. 设置Content-Type类型, 默认x-www-form-urlencoded
|
||
if(!this.opt.formType)
|
||
this.type('form')
|
||
|
||
// 5.处理GET请求
|
||
this.opt.hasContent = this.opt.type === 'POST' //是否为post请求
|
||
if(!this.opt.hasContent){
|
||
|
||
//GET请求直接把参数拼接到url上
|
||
if(this.opt.param){
|
||
this.opt.url += (/\?/.test(this.opt.url) ? '&' : '?') + this.opt.param
|
||
}
|
||
//加随机值,避免缓存
|
||
if(this.opt.cache === false)
|
||
this.opt.url += (/\?/.test(this.opt.url) ? '&' : '?') + '_=' + Math.random()
|
||
}else{
|
||
if(this.opt.formType === 'form-data'){
|
||
delete this.opt.headers['content-type']
|
||
this.opt.param = this.formData()
|
||
|
||
}else if(this.opt.formType !== 'form'){
|
||
this.opt.param = JSON.stringify(this.opt.data)
|
||
}
|
||
}
|
||
|
||
//jsonp
|
||
if(this.opt.type === 'JSONP'){
|
||
|
||
this.transport = doc.createElement('script')
|
||
this.transport.onerror = this.transport.onload = function(){
|
||
_this.dispatch(_this.transport)
|
||
}
|
||
this.transport.src = this.opt.url
|
||
doc.head.insertBefore(this.transport, doc.head.firstChild)
|
||
|
||
//6. 超时处理
|
||
if(this.opt.timeout && this.opt.timeout > 0){
|
||
this.opt.timeoutID = setTimeout(function(){
|
||
_this.transport.onerror = _this.transport.onload = null
|
||
_this.dispatch(null)
|
||
}, this.opt.timeout)
|
||
}
|
||
}else{
|
||
|
||
this.xhr.onreadystatechange = function(ev){
|
||
|
||
if(_this.opt.timeout && _this.opt.timeout > 0){
|
||
_this.opt['time' + this.readyState] = ev.timeStamp
|
||
if(this.readyState === 4){
|
||
_this.opt.isTimeout = _this.opt.time4 - _this.opt.time1 > _this.opt.timeout
|
||
}
|
||
}
|
||
|
||
if(this.readyState !== 4){
|
||
return
|
||
}
|
||
|
||
_this.dispatch(_this.opt.isTimeout ? null : _this.xhr)
|
||
|
||
}
|
||
|
||
|
||
// 6. 初始化xhr提交
|
||
this.xhr.open(this.opt.type, this.opt.url, true)
|
||
|
||
// 7. 设置头信息
|
||
for(var i in this.opt.headers){
|
||
if(this.opt.headers[i])
|
||
this.xhr.setRequestHeader(i, this.opt.headers[i])
|
||
}
|
||
|
||
// 8. 发起网络请求
|
||
_this.xhr.send(_this.opt.param)
|
||
|
||
//超时处理
|
||
if(this.opt.timeout && this.opt.timeout > 0){
|
||
this.xhr.timeout = this.opt.timeout;
|
||
}
|
||
}
|
||
return this
|
||
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
// ---------------------- end ------------------------
|
||
|
||
|
||
if(!win.request){
|
||
win.request = {
|
||
get: function(url){
|
||
if(!url)
|
||
throw new Error('argument url is required')
|
||
|
||
return new _request(url, 'GET')
|
||
},
|
||
post: function(url){
|
||
if(!url)
|
||
throw new Error('argument url is required')
|
||
|
||
return new _request(url, 'POST')
|
||
},
|
||
jsonp: function(url){
|
||
if(!url)
|
||
throw new Error('argument url is required')
|
||
|
||
return new _request(url, 'JSONP')
|
||
},
|
||
cache: {},
|
||
cid: 0,
|
||
version: '1.0.0-es5',
|
||
}
|
||
yua.ui.request = request.version
|
||
}
|
||
|
||
return request
|
||
})
|
JavaScript
95.2%
CSS
4.8%