Having trouble accessing my API through localhost with NextJS

Question

Having trouble accessing my API through localhost with NextJS

I'm currently working on an app that involves fetching data from my own API. The goal is to retrieve user-specific information and use it within the app. However, I've encountered a roadblock with CORS headers and I'm unsure of how to proceed.

In summary:

I fetch the data in the componentDidMount phase
Parse the retrieved data
Integrate it into my app's state

The issue arises when fetching the data as CORS protocol blocks my request. Unfortunately, I'm stumped on how to resolve this within the settings of next.js.

javascript next.js

Answer 1

Answer №1

Unable to connect due to the lack of API access from your backend system. It appears that you have utilized the Express server for your backend operations. An excellent solution is to incorporate the CORS package in Node.js. By simply integrating app.use(cors()) middleware and configuring CORS settings in your backend, you can overcome this issue.

Answer 2

Unable to connect due to the lack of API access from your backend system. It appears that you have utilized the Express server for your backend operations. An excellent solution is to incorporate the CORS package in Node.js. By simply integrating app.use(cors()) middleware and configuring CORS settings in your backend, you can overcome this issue.

Answer 3

Answer №2

There are two ways to achieve this:

1.

// Using nodejs
app.use(cors({ origin: 'front-end url' }));

// In react
fetch('/api/api/', {
  method: '',
  headers: {
    'Access-Control-Allow-Origin': 'back-end url'
  },
});

2.

// Using nodejs
app.use((req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', 'front-end url');
  next();
});

app.use(cors({ origin: 'font-end url' }));

The key difference between the two versions is that in version 2, the header is automatically set on every request, while in version 1, it needs to be set manually for each request. If you require further assistance, please don't hesitate to ask :).

Answer 4

There are two ways to achieve this:

1.

// Using nodejs
app.use(cors({ origin: 'front-end url' }));

// In react
fetch('/api/api/', {
  method: '',
  headers: {
    'Access-Control-Allow-Origin': 'back-end url'
  },
});

2.

// Using nodejs
app.use((req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', 'front-end url');
  next();
});

app.use(cors({ origin: 'font-end url' }));

The key difference between the two versions is that in version 2, the header is automatically set on every request, while in version 1, it needs to be set manually for each request. If you require further assistance, please don't hesitate to ask :).

Having trouble accessing my API through localhost with NextJS

Answer №1

Answer №2

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