express

问题 I've hosted a nodejs server on localhost generated using Swagger and I'm trying to make API calls to it using Swagger UI again hosted on localhost. The network profile in chrome is showing connection refused everytime I'm making a call because CORS header are not added to the request. This is my app.js file which was generated using Swagger: 'use strict'; var SwaggerExpress = require('swagger-express-mw'); var app = require('express')(); module.exports = app; // for testing var config = {

问题 I've hosted a nodejs server on localhost generated using Swagger and I'm trying to make API calls to it using Swagger UI again hosted on localhost. The network profile in chrome is showing connection refused everytime I'm making a call because CORS header are not added to the request. This is my app.js file which was generated using Swagger: 'use strict'; var SwaggerExpress = require('swagger-express-mw'); var app = require('express')(); module.exports = app; // for testing var config = {

问题 I am using nodejs server, express framework and fetch library to send request to another server which is in different domain. For one of my endpoint consider (localhost:8080/login) i am rendering ejs file when the user clicks login button i am sending a fetch request to an api (https:otherserver.com/login) different server which is in other domain. i am not able to send this request. I am getting this error : Response to preflight request doesn't pass access control check: No 'Access-Control

问题 What are the types of the four parameters for the error handling function when coding in Typescript? app.use((err: ??, req: ??, res: ??, next: ??) => { }); I am using VS Code and no hints are offered. I get red wiggly lines under all four parameters. The error says "Parameter implicitly has 'any' type". Actually I am confused with this message. If it treats it as an any type, then isn't that a valid choice? 回答1: The function itself has the following signature (taken from DefinitelyTyped):

问题 I have centOS: When I try to run an node.js app that requires express, I get the following error: module.js:340 throw err; ^ Error: Cannot find module 'express' at Function.Module._resolveFilename (module.js:338:15) at Function.Module._load (module.js:280:25) at Module.require (module.js:364:17) at require (module.js:380:17) at Object.<anonymous> (/var/www/tipsterPro/index.js:2:15) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module

问题 So basically I'm new to react and couldn't find a single doc or resources regarding uploading an Image and input value at the same time. One Solution is Form Data , But that isn't working as expected The other method is Serialize , But I can't find any doc that explain the way to use in React So, it would be really great for me and the newbies of React to know about this if you anyone could help me out. 回答1: You can try the following method you can use multer with express to handle the file

问题 I have created VetCreate and VetEdit functions to create a new record and then edit that record respectively (code below). The problem I have is the successful create response is returned but the newly created id isn't populated in the request to fetch the record. I have async/await keywords in place where I think they need to be but the details logged to the console clearly indicate something isn't working as it should. If I try to edit a record after returning to the list screen, the API

问题 I am trying to upload files using Dropzone and send these files to java back end API from React JS. Here React is sending the document to express back end and adding some keys and then sending the final form data to back end java endpoint. But not able to get the files and request part in the back end side. The express is getting the wrong format of the data Appreciate any help. UploadMyFiles.jsx const UploadMyFiles = () => { const [selectedFiles, setSelectedFiles]= useState(null) const

问题 I have a React app that is trying to make an axios request to my Express server to find a user in a Mongo database. Before, I built the back-end on Rails and had a gem for CORS, and after trying to configure CORS on the Express side, I can't seem to find a solution. I want to be able to pass in a custom field in headers (i.e. username) so I can use that field to query against my database. Error I get in browser: XMLHttpRequest cannot load http://localhost:3000/api/users/test. Request header

问题 I have a React app that is trying to make an axios request to my Express server to find a user in a Mongo database. Before, I built the back-end on Rails and had a gem for CORS, and after trying to configure CORS on the Express side, I can't seem to find a solution. I want to be able to pass in a custom field in headers (i.e. username) so I can use that field to query against my database. Error I get in browser: XMLHttpRequest cannot load http://localhost:3000/api/users/test. Request header