在Node Express应用程序中无法PUT错误

Question

我的get和post API工作正常，但由于某些原因，我的app.put不是。

当我在PostMan中点击localhost:3001/contacts/1 PUT时，我甚至看不到我的简单console.log：

app.put('/api/contacts:id', (req, res) => {
    console.log('req.params.id', req.params.id);
    res.json(contact);
});

app.put

app.put('/api/contacts:id', (req, res) => {
    console.log('req.params.id', req.params.id);
    res.json(contact);
});

完整的server.js代码

// Requires ////////////////////////////////////////////////////////////////////
const express = require('express');
const app = express();
const bodyParser = require('body-parser'); // req.body
const cors = require('cors');
const R = require('ramda');

// Variables ///////////////////////////////////////////////////////////////////
const hostname = 'localhost';
const port = 3001;
let contacts = require('./data');

// Logic ///////////////////////////////////////////////////////////////////////
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cors());

app.get('/api/contacts', (req, res) => {
    if (!contacts || R.isEmpty(contacts)) returnError(res, 'No Contacts found');
    res.json(contacts);
});

app.get('/api/contacts/:id', (req, res) => {
    const contact = contacts.filter(contact => contact.id == req.params.id);
    if (R.isEmpty(contact)) returnError(res, 'No Contact found');
    res.json(R.head(contact));
});

app.post('/api/contacts', (req, res) => {
    const contact = {
        id: contacts.length + 1,
        first_name: req.body.first_name,
        last_name: req.body.last_name,
        email: req.body.email,
        website: req.body.website
    }

    contacts.push(contact);

    res.json(contact);
});

app.put('/api/contacts:id', (req, res) => {
    console.log('req.params.id', req.params.id);
    // const contact = contacts.filter(contact => {
    //  return contact.id == req.params.id
    // })[0];

    // console.log('1 contact', contact);
    // const index = contacts.indexOf(contact);
    // const keys = Object.keys(req.body);
    // keys.forEach(key => {
    //  contact[key] = req.body[key];
    // });
    // console.log('2 contact', contact);
    // contacts[index] = contact;
    // console.log('contacts', contacts);
    // res.json(contacts[index]);
    res.json(contact);
});

const returnError = (res, msg) => res.status(404).json({ message: msg });

app.listen(port, hostname, () => {
    console.log(`server is running at http://${hostname}:${port}`);
});

Answer 1

这一行看起来像是一个错字：

app.put('/api/contacts:id', (req, res) => {

添加＆＃39; /＆＃39;阅读：

app.put('/api/contacts/:id', (req, res) => {

Answer 2

您的网址如下：

System.Runtime.InteropServices.COMException was unhandled ErrorCode=-2146823114 HResult=-2146823114 HelpLink=wdmain11.chm#24654 Message=Sorry, we couldn't find your file. Was it moved, renamed, or deleted? Source=Microsoft Word StackTrace: at Microsoft.Office.Interop.Word.Documents.Add(Object& Template, Object& NewTemplate, Object& DocumentType, Object& Visible) at Builder.CreateSoW..ctor() in C:\Tools\Builder\Create.cs:line 47 at Builder.MasterForm3.buttonNext_Click(Object sender, EventArgs e) in C:\Tools\Builder\MasterForm3.cs:line 245 at Builder.MasterForm3.<.ctor>b__3_2(Object sender, EventArgs EventArgs) in C:\Tools\Builder\MasterForm3.cs:line 114 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at Builder.Program.Main() in C:\Tools\Builder\Program.cs:line 22 InnerException: ，

应该如下：

app.put('/api/contacts:id', (req, res) => {