app.all("*", function (req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  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");

  if (req.method == "OPTIONS") {
    res.send(200);
    /让options请求快速返回/;
  } else {
    next();
  }
});

function getIPAdress() {
  var interfaces = require("os").networkInterfaces();
  for (var devName in interfaces) {
    var iface = interfaces[devName];
    for (var i = 0; i < iface.length; i++) {
      var alias = iface[i];
      if (alias.family === "IPv4" && alias.address !== "127.0.0.1" && !alias.internal) {
        return alias.address;
      }
    }
  }
}

const Router = require("Koa-router");
const requireDirectory = require("require-directory");
requireDirectory(modele, "./api", {
  visit: (obj) => {
    if (obj instanceof Router) {
      app.use(obj.routes());
    }
  }
});

process.cwd(); //当前项目的绝对路径