主体解析器忽略类型参数

Question

我有 Content-Type: application/vnd.surveymonkey.response.v1+json 的入站请求。我正在尝试对它们使用 body-parser。 body-parser 的 json 工厂方法的 documentation 声明：

Returns middleware that only parses json and only looks at requests where the Content-Type header matches the type option.

[...]

The type option is used to determine what media type the middleware will parse. This option can be a string, array of strings, or a function. If not a function, type option is passed directly to the type-is library and this can be an extension name (like json), a mime type (like application/json), or a mime type with a wildcard (like / or */json). If a function, the type option is called as fn(req) and the request is parsed if it returns a truthy value. Defaults to application/json.

我尝试了各种参数，但无论我输入什么，解析器中间件都会继续接受 application/json 而拒绝 application/vnd.surveymonkey.response.v1+json。事实上，当我在 type 函数中放置一个 console.debug 语句时，它从不打印，所以看起来 type 参数被完全忽略了。

我做错了什么吗？我需要做什么才能让 body-parser 遵守 type 参数？

import * as bodyParser from 'body-parser';
import * as express from 'express';

const app = express();
app.use(
  bodyParser.json({
    // type: 'application/vnd.surveymonkey.response.v1+json', // doesn't work
    // type: ['application/vnd.surveymonkey.response.v1+json'], // doesn't work
    // type: ['application/*'], // doesn't work
    // type: (req) => /application\/(.+\+)?json/.test(req.headers['Content-Type'] as string), // doesn't work
    type: (req) => console.debug('Hello world!'),
  })
);

app.post(`/`, (req, res) => {
  console.log('Request: ', req.body);
  res.status(200).send();
});

Answer 1

It turns out 问题是我在 Firebase Functions 上运行，它已经在入站请求上运行 body-parser。添加 body-parser 的另一个实例是空操作，这就是它被忽略的原因。

主体解析器忽略类型参数

body-parser ignores type parameter

node.js

express

mime-types

content-type

body-parser