只需将以下代码插入到 app.js 文件的路由代码之前
app.use((req, res, next)=>{
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Headers', 'authtoken,content-type,application/json, text/plain, */*');
if(req.method==='OPTIONS')
{
res.header('Access-Control-Allow-Methods', 'GET, HEAD, POST, PUT, DELETE, CONNECT, OPTIONS, TRACE, PATCH');
return res.status(200).json({});
}
next()
})
// routes middleware
readdirSync("./routes").map((r) => app.use("/api", require("./routes/" + r)));
`````