Question

我正在尝试将方法绑定到我的Traceback (most recent call last): File "/Users/CosmoCrash/opencvblobs/lib/python3.7/site-packages/tifffile/tifffile.py", line 2236, in __init__ byteorder = {b'II': '<', b'MM': '>'}[header[:2]] KeyError: b'\x89P' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "gfp.py", line 6, in <module> binary_img = tifffile.imread('organoid_images/gfp/cells1.tif') File "/Users/CosmoCrash/opencvblobs/lib/python3.7/site-packages/tifffile/tifffile.py", line 715, in imread with TiffFile(files, **kwargs_file) as tif: File "/Users/CosmoCrash/opencvblobs/lib/python3.7/site-packages/tifffile/tifffile.py", line 2238, in __init__ raise TiffFileError('not a TIFF file') tifffile.tifffile.TiffFileError: not a TIFF file路由，因此我在有关此问题的其他一些帖子的代码中做了一些更改，但是我什么都无法工作。我使用feathersJS的express实现，但是即使使用express，我仍然遇到相同的错误。任何帮助将不胜感激。

app.js

/userAuthenticationInfo

AnnotatorService.js

const feathers = require('@feathersjs/feathers');
const express = require('@feathersjs/express');
const nano = require('cloudant-nano');
const AnnotatorService = require('./services/api/AnnotatorService');

const app = express(feathers())
    .configure(express.rest())
    .use(express.json())
    .use(express.urlencoded({ extended: true }));

app.use('/userAuthenticationInfo', AnnotatorService.getUserAuthenticationInfo('bobby', app));

错误日志

const nano = require('cloudant-nano');
const couchdbservice = require('@kapmug/feathers-nano/lib/index');

const host = process.env.DB_HOST || '127.0.0.1:5984';
const auth = `${process.env.DB_USERNAME || 'admin'}:${process.env.DB_PASSWORD || 'welcome'}`;
const opts = {
    url: `http://${auth}@${host}`,
};

const options = {
    name: 'users',
    connection: nano(opts),
    database: 'users',
    paginate: {
        default: 5,
        max: 200,
    },
};

var params = {
    limit: 5,
    skip: 0,
};

module.exports.getUserAuthenticationInfo = function (username, app) {
    console.log('mission accomplished');
};

Answer 1

在app.use函数中，您需要放置一个中间件函数（指针），其声明如下：

function(req, res, next){ ... }

但是，通过放置AnnotatorService.getUserAuthenticationInfo('bobby', app)，您实际上是在调用该函数，该函数什么也不返回，因此undefined。

应该，

module.exports.getUserAuthenticationInfo = function (username, app) {
  return function(req, res, next){
    console.log('mission accomplished');
    next()//or res.end() or res.send() whatever
  }
};

TypeError（'Router.use（）需要中间件功能，但得到了'+ gettype（fn））FeathersJS

1 个答案: