request.getinputstream

The `getInputStream()` method is a method available in the `HttpServletRequest` class in Java. It returns an input stream that contains the body of the request made to the server.

When a client sends a request to the server, the request contains a body that is sent along with the request. This body can contain data in various formats like JSON, XML, or plain text. The `getInputStream()` method allows the server-side code to read this body and process it.

Here's an example of how to use the `getInputStream()` method:

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    InputStream inputStream = request.getInputStream();
    // Read the input stream and process the request body
}

In this example, we're using the `doPost()` method to handle a POST request. The `request` object is passed as a parameter to this method. We're calling the `getInputStream()` method on this object to get the input stream that contains the body of the request. We can then read this input stream and process the request body as needed.