express的简单dome

const express = require("express");
const port = 8080;
const app = express();
/* 解析post */
const body = require("body-parser");
/* 解析cookie */
const cookieParser = require("cookie-parser");
/* 加密解析cookie */
const cookieSession = require("cookie-session");
const path = require("path");
const fs = require("fs");
/* 获取文件 */
const multer = require("multer");

app.all("*", function (req, res, next) {
    res.header("Access-Control-Allow-Origin", "http://192.168.31.45:63341");
    /* 处理跨域携带cookie时出现的问题 */
    res.header("Access-Control-Allow-Credentials", "true");
    res.header('Access-Control-Allow-Headers', 'Content-Type, Content-Length, Authorization, Accept, X-Requested-With , yourHeaderFeild');
    res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By", ' 3.2.1')
    res.header("Content-Type", "application/json;charset=utf-8");
    if (req.method.toLowerCase() == 'options') {
        res.send(200);  //让options尝试请求快速结束
    } else {
        next();
    }
});
/* 解析post参数 */
app.use(body.urlencoded({
    /* extended: false：表示使用系统模块querystring来处理，也是官方推荐的 */
    extended: false,
}));
/* 通过配置multer的dest属性， 将文件储存在项目下的tmp文件中 */
app.use(multer({dest: '../upload/'}).any());
/* 引用解析cookie参数中间件 */
app.use(cookieParser(
    /* 增加签名 */
    "123456789"
));
/* 引用加密cookie中间件 */
app.use(cookieSession({
    /* 加密数组 */
    keys: ["123", "456", "789"],
    /* 有效时间 */
    maxAge: 20 * 60 * 1000,
}))

/* 获取get数据 */
app.get("/api/userInfo", (req, res, next) => {
    console.log(req.query);
    res.send("get请求成功");
})

/* 获取post数据 */
app.post("/api/userLogin", (req, res, next) => {
    console.log(req.body);
    res.send("post请求成功");
})
/* 获取文件 */
app.post("/api/filesUpload", (req, res, next) => {
    /*
    * req.files[0].path这是路径加文件明
    * path.parse(req.files[0].originalname).ext获取文件后缀名
    * */
    const filename = req.files[0].path + path.parse(req.files[0].originalname).ext
    console.log(req.files[0]);
    console.log(req.files[0].path);
    console.log(path.parse(req.files[0].originalname));
    console.log(path.parse(req.files[0].originalname).ext);
    console.log(filename);
    console.log(req.body);
    fs.rename(req.files[0].path, filename, function (err) {
        if (err) {
            res.send(err)
        } else {
            res.send("文件上传成功");
        }
    })
})

app.post("/api/userCookie", (req, res) => {
    /* 获取未签名cookies的值 */
    console.log(req.cookies);
    /* 获取经过签名的cookies */
    console.log(req.signedCookies);
    /* 向浏览器添加cookie */
    res.cookie("times", "0101215155", {
        /* 是否只能服务端操作 */
        httpOnly: true,
        /* 只有https的情况下才能使用 */
        // secure:true,
        /* 是否签名 */
        signed: true,
        /* 添加路径 */
        // path: "/",
        /* 添加域名 */
        // domain: "",
        /* 添加有效期 */
        maxAge: 7 * 24 * 60 * 60 * 1000
    });
    // res.cookie("times", "0101215155");
    res.send({
        code: 0,
        data: "成功"
    })
})
app.post("/api/userSession", (req, res) => {
    /* 获取加密之后的cookie */
    if (!req.session["key"]) {
        req.session["key"] = 1;
    } else {
        req.session["key"]++;
    }
    console.log("=======================================");
    console.log(req.session.key);
    console.log(req.session);
    res.send({
        code: 0,
        data: "成功"
    })
})

app.use("/view/", express.static("../static/"));

app.listen(port, () => {
    console.log(`Example app listening at http://localhost:${port}`)
})