How to use the koaBody function from koa-body

koa-body.koaBody is a middleware function used in the Koa framework to parse request bodies.

How does koa-body.koaBody work?

koa-body.koaBody is a middleware function in the Koa framework that parses request bodies. It supports different types of request bodies such as JSON, form data, text, and raw. When a request is made to a Koa application that uses koa-body.koaBody, the middleware function checks the content type of the request body. If the content type is not supported by the middleware, it will throw an error. Otherwise, it will parse the request body and store the parsed data in the ctx.request.body property. The koa-body.koaBody function can be customized with various options, including the maximum allowed file size, the type of parsed data, and the encoding used for text data.

Ai Example

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const Koa = require("koa");
const koaBody = require("koa-body");

const app = new Koa();

// Use koa-body middleware
app.use(koaBody());

// Handle POST requests to the '/api/user' endpoint
app.use(async (ctx) => {
  if (ctx.request.method === "POST" && ctx.request.path === "/api/user") {
    // Access the parsed request body data
    const body = ctx.request.body;

    // Do something with the parsed data
    console.log(body);

    // Send a response
    ctx.body = "Data received.";
  } else {
    ctx.status = 404;
  }
});

app.listen(3000);

In this example, koa-body.koaBody middleware is used to parse the request body of any POST requests that are made to the /api/user endpoint. The parsed request body data is then accessed through the ctx.request.body property, which contains the parsed data. The koa-body middleware automatically detects the content type of the request body and parses it accordingly. Note that in a real-world application, you would want to perform additional validation and error handling on the parsed request body data before using it.