我正在尝试正确处理对Firebase上托管的本地化角度应用程序的请求。目标是根据以下条件加载正确的应用程序捆绑包:1)名为locale
的cookie。 2)accept-language
标头。 3)当其他人不可用时,默认设置为en-us
。
在使用i18n本地化角度应用程序时,angular-cli会为angular.json
中存在的每种语言/地区生成捆绑包(您的应用程序的版本)。 Firebase将您的捆绑包作为静态内容提供,并且具有严格的安全度量,不允许遍历路径。
我尝试在firebase.json
中设置 rewrites 和 redirects ,但是没有拦截locale
cookie的功能。然后,我使用云函数来读取Cookie,解析请求并使用express
,cookie-parser
和express-locale
返回正确的资源。
1。仅使用托管
firebase.json
{
"hosting": {
"public": "dist",
"ignore": [
"firebase.json",
"**/.*",
"**/node_modules/**"
],
"rewrites": [
{
"source": "/en-us/**",
"destination": "/en-us/index.html"
},
{
"source": "/es-co/**",
"destination": "/es-co/index.html"
},
{
"source": "/zh-hans/**",
"destination": "/zh-hans/index.html"
},
{
"source": "**",
"destination": "/en-us/index.html"
}
]
}
}
2。使用云功能并表达
firebase.json
{
"functions": {
"predeploy": [
"npm --prefix \"$RESOURCE_DIR\" run lint"
]
},
"hosting": {
"public": "dist",
"ignore": [
"firebase.json",
"**/.*",
"**/node_modules/**"
],
"rewrites": [
{
"source": "**",
"function": "multilang"
}
]
}
}
functions / index.js
const express = require('express')
const expressLocale = require('express-locale')
const cookieParser = require('cookie-parser')
const functions = require('firebase-functions')
const path = require('path')
const fs = require('fs')
const _ = require('lodash')
const app = express()
const localeMap = {
en: 'en_US',
es: 'es_CO',
zh: 'zh_TW',
'en-US': 'en_US',
'es-CO': 'es_CO',
'zh-TW': 'zh_TW',
'zh-Hans': 'zh_TW',
en_US: 'en_US',
es_CO: 'es_CO',
zh_TW: 'zh_TW',
zh_Hans: 'zh_TW'
}
const defaultLocale = 'en_US'
const baseMap = {
en_US: 'en-us',
es_CO: 'es-co',
zh_TW: 'zh-hans'
}
app
.use(cookieParser())
.use(expressLocale({
priority: ['cookie', 'accept-language', 'map', 'default'],
default: defaultLocale,
map: localeMap
}))
.use('**', (req, res, next) => {
const locale = localeMap[req.locale.language]
const sanitized = req.originalUrl.replace(/\.{2,}/g, '').replace(/\/{2,}/g, '/')
const url = sanitized.split('/')
const idx = url.length === 1 ? 0 : 1
url[0] = _.values(baseMap).includes(url[idx]) ?
url[idx] : (baseMap[locale] || baseMap[defaultLocale])
if (url.length > 1 && url[0] === url[1]) {
url.shift()
}
let file = path.resolve(`dist/${url.join('/')}`)
if (!url[url.length - 1].match(/^[\w,\s-]+\.[a-z0-9]{2,4}$/) || !fs.existsSync(file)) {
file = path.resolve(`dist/${url[0]}/index.html`)
}
res.sendFile(file)
})
exports.multilang = functions.https.onRequest(app)
最后的设置非常适合index.html或任何其他请求文件的本地Firebase仿真解析路径(例如,ngsw-worker.js
为渐进式应用程序支持)。
部署到Firebase时,即使将路径更改为:
,它也无法解析并找到托管文件(例如index.html
)。
/${url[0]}/index.html
../${url[0]}/index.html
/public/${url[0]}/index.html
或将req.sendFile
重写为req.redirect
。
感谢您的帮助。
答案 0 :(得分:0)
对于面临相同问题的任何人,这是使用Firebase函数的幼稚解决方案:
char guess = '\0';
bool guessInputSuccess = false;
while (!guessInputSuccess)
{
Console.Write("Guess your letter: ");
char.TryParse(Console.ReadLine().ToLower(), out guess);
if (!char.IsLetter(guess))
{
Console.Write("You have not entered a letter from a-z.");
}
else
{
guessInputSuccess = true;
}
}
return guess;
const express = require('express')
const cookieParser = require('cookie-parser')
const expressLocale = require('express-locale')
const functions = require('firebase-functions')
const localeMap = {
en: 'en_US',
es: 'es_CO',
zh: 'zh_CN',
en_US: 'en_US',
es_CO: 'es_CO',
zh_Hans: 'zh_CN'
}
const prefixMap = {
en_US: 'en-us',
es_CO: 'es-co',
zh_CN: 'zh-hans',
}
const defaultLocale = 'en_US'
const app = express()
app
.use(cookieParser())
.use(expressLocale({
priority: ['cookie', 'accept-language', 'map', 'default'],
default: defaultLocale,
map: localeMap
}))
.use('*', (req, res, next) => {
const locale = localeMap[req.locale.language]
const prefix = prefixMap[locale] || prefixMap[defaultLocale]
res.redirect(`/${prefix}${req.originalUrl}`)
})
exports.multilang = functions.https.onRequest(app)