"Encountered a problem with Next JS API while trying to fetch data from the app directory

import { NextResponse } from "next/server";

export async function POST(request: Request) {
  const data = await request.json();

  console.log(data);
  return NextResponse.json({ foo: "boo" });
}

next version = "next": "13.4.2"

issue: encountered error while trying to retrieve data using await request.json()

error SyntaxError: Unexpected token  in JSON at position 0
    at JSON.parse (<anonymous>)
    at parseJSONFromBytes (node:internal/deps/undici/undici:6571:19)
    at successSteps (node:internal/deps/undici/undici:6545:27)
    at node:internal/deps/undici/undici:1211:60
    at node:internal/process/task_queues:140:7
    at AsyncResource.runInAsyncScope (node:async_hooks:203:9)
    at AsyncResource.runMicrotask (node:internal/process/task_queues:137:8)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
typescriptnext.jsnext.js13

Answer №1

One common issue arises when attempting to retrieve data from an API endpoint without sending any data in the body. It is advisable to always surround such operations with a try-catch block to handle potential errors.

import { NextResponse } from "next/server";

export async function POST(request: Request) {
  try{
     const data = await request.json();
     console.log(data);
  }
  catch(e) {
     /* handle your error message here */
  }
  return NextResponse.json({ foo: "boo" });
}

Answer №2

It appears that the issue lies in the method by which the request is being sent... I encountered a similar problem while sending a POST request through Postman using formdata and subsequently utilizing request.json() to analyze the body afterwards. In this situation, it would be advisable to employ request.formData() or send the raw body with JSON encoding within Postman.

Answer №3

Encountered a similar issue while trying to make a post request to a next.js API using Postman. Resolved the error by adjusting the data format in the request body. Ensure that your key names are defined as strings, for example { "name" : "muhammad"}. Making this change from name to "name" helped resolve my problem.

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