使用 Cloudflare Workers 创建短网址程序
https://dash.cloudflare.com/ (opens new window)
用域名添加站点，然后点击“Workers”
点击“管理 Workers”，
部署一个 Workers，并使用以下代码
const html404 = `<!DOCTYPE html>
<body>
<h1>404 Not Found.</h1>
<p>The url you visit is not found.</p>
</body>`
async function randomString(len) {
len = len || 6;
let $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/
let maxPos = $chars.length;
let result = '';
for (i = 0; i < len; i++) {
result += $chars.charAt(Math.floor(Math.random() * maxPos));
}
return result;
}
async function checkURL(URL){
let str=URL;
let Expression=/http(s)?:\/\/([\w-]+\.)+[\w-]+(\/[\w- .\/?%&=]*)?/;
let objExp=new RegExp(Expression);
if(objExp.test(str)==true){
if (str[0] == 'h')
return true;
else
return false;
}else{
return false;
}
}
async function save_url(URL){
let random_key=await randomString()
let is_exist=await LINKS.get(random_key)
console.log(is_exist)
if (is_exist == null)
return await LINKS.put(random_key, URL),random_key
else
save_url(URL)
}
async function handleRequest(request) {
console.log(request)
if (request.method === "POST") {
let req=await request.json()
console.log(req["url"])
if(!await checkURL(req["url"])){
return new Response(`{"status":500,"key":": Error: Url illegal."}`, {
headers: {
"content-type": "text/html;charset=UTF-8",
"Access-Control-Allow-Origin":"*",
"Access-Control-Allow-Methods": "POST",
},
})}
let stat,random_key=await save_url(req["url"])
console.log(stat)
if (typeof(stat) == "undefined"){
return new Response(`{"status":200,"key":"/`+random_key+`"}`, {
headers: {
"content-type": "text/html;charset=UTF-8",
"Access-Control-Allow-Origin":"*",
"Access-Control-Allow-Methods": "POST",
},
})
}else{
return new Response(`{"status":200,"key":": Error:Reach the KV write limitation."}`, {
headers: {
"content-type": "text/html;charset=UTF-8",
"Access-Control-Allow-Origin":"*",
"Access-Control-Allow-Methods": "POST",
},
})}
}else if(request.method === "OPTIONS"){
return new Response(``, {
headers: {
"content-type": "text/html;charset=UTF-8",
"Access-Control-Allow-Origin":"*",
"Access-Control-Allow-Methods": "POST",
},
})
}
const requestURL = new URL(request.url)
const path = requestURL.pathname.split("/")[1]
console.log(path)
if(!path){
const html= await fetch("https://cdn.jsdelivr.net/gh/xyTom/Url-Shorten-Worker@gh-pages/index.html")
return new Response(await html.text(), {
headers: {
"content-type": "text/html;charset=UTF-8",
},
})
}
const value = await LINKS.get(path)
console.log(value)
const location = value
if (location) {
return Response.redirect(location, 302)
}
// If request not in kv, return 404
return new Response(html404, {
headers: {
"content-type": "text/html;charset=UTF-8",
},
status: 404
})
}
addEventListener("fetch", async event => {
event.respondWith(handleRequest(event.request))
})
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Q：如何24小时后删除地址？
A：参考https://developers.cloudflare.com/workers/runtime-apis/kv#creating-expiring-keys (opens new window) 将原代码 index.js 中的第 36 行的 return await LINKS.put(random_key, URL),random_key
修改为：
return await LINKS.put(random_key, URL, {expirationTtl: 606024}),random_key
KV 添加一个命名空间
绑定命名空间
网页编辑 (opens new window)
最近提交: 2023/03/22, 11:52:35