express - 如何启用 DELETE 请求？

Question

我不能允许 DELETE由于 CORS，来自我的 API 服务器的请求。

服务器.js

// enable CORS
app.use(function (req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Methods", "GET", "PUT", "POST", "DELETE", "OPTIONS");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization");
    next();
});

我收到一个控制台错误说:
XMLHttpRequest cannot load http://localhost:8080/api/users/57f5036645c04700128d4ee0. Method DELETE is not allowed by Access-Control-Allow-Methods in preflight response
如何启用 DELETE请求，就像 GET , PUT , 和 POST要求？

Answer 1

我在没有添加新包的情况下解决了它，只是添加了这一行

res.header("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE");

请注意，我在一个字符串中用逗号分隔了允许的方法。
完整的函数如下所示:

app.use(function (req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization");
  next();
});