HttpServletRequest get JSON POST data

To get JSON POST data from an HttpServletRequest object in Java, you can use the getReader method of the ServletRequest interface to read the request body as a BufferedReader and then use the readLine method to read the data as a string.

Here is an example of how you can do this:


import javax.servlet.ServletRequest;

public class Main {
  public static void main(String[] args) throws Exception {
    ServletRequest request;  // Assume this is an HttpServletRequest object

    StringBuilder sb = new StringBuilder();
    BufferedReader reader = request.getReader();
    String line;
    while ((line = reader.readLine()) != null) {
    String data = sb.toString();

    // The 'data' string now contains the JSON POST data

Once you have the JSON POST data as a string, you can use a JSON library such as Jackson to parse it and access the individual fields.

I hope this helps! Let me know if you have any other questions.