前端缓存http请求
2021-03-07 15:29
标签:允许 str 没有 pad add att data you 二次 需求:
1、 重复的请求,使用缓存
2、 不重复的请求,允许发送
3、 连续两次重复的发送,两次返回的结果是一样的,且第二次不发送请求
1、搭建前端服务
vue-cli 一步到位
2、后端服务,使用koa,也是一步到位搭建
const Koa = require(‘koa‘)
const app = new Koa()
app.use(async (ctx, next)=> {
ctx.set(‘Access-Control-Allow-Origin‘, ‘*‘);
ctx.set(‘Access-Control-Allow-Headers‘, ‘Content-Type, Content-Length, Authorization, Accept, X-Requested-With , yourHeaderFeild‘);
ctx.set(‘Access-Control-Allow-Methods‘, ‘PUT, POST, GET, DELETE, OPTIONS‘);
if (ctx.method == ‘OPTIONS‘) {
ctx.body = 200;
} else {
await next();
}
});
app.use(async(ctx)=>{
let url =ctx.url
//从request中获取GET请求
let request =ctx.request
let req_query = request.query
let req_querystring = request.querystring
//从上下文中直接获取
let ctx_query = ctx.query
let ctx_querystring = ctx.querystring
ctx.body={
url,
}
})
app.listen(3000,()=>{
console.log(‘server is starting at port 3000‘);
})
const Koa = require(‘koa‘)
const app = new Koa()
app.use(async (ctx, next)=> {
ctx.set(‘Access-Control-Allow-Origin‘, ‘*‘);
ctx.set(‘Access-Control-Allow-Headers‘, ‘Content-Type, Content-Length, Authorization, Accept, X-Requested-With , yourHeaderFeild‘);
ctx.set(‘Access-Control-Allow-Methods‘, ‘PUT, POST, GET, DELETE, OPTIONS‘);
if (ctx.method == ‘OPTIONS‘) {
ctx.body = 200;
} else {
await next();
}
});
app.use(async(ctx)=>{
let url =ctx.url
//从request中获取GET请求
let request =ctx.request
let req_query = request.query
let req_querystring = request.querystring
//从上下文中直接获取
let ctx_query = ctx.query
let ctx_querystring = ctx.querystring
ctx.body={
url,
}
})
app.listen(3000,()=>{
console.log(‘server is starting at port 3000‘);
})