How to Get URL from Browser's Address Bar using Java HttpServletRequest

If you're working on a Java web application and need to retrieve the URL from the user's browser address bar, you can do so using the HttpServletRequest object. This object represents the request made by the client to the server and contains information about the request, including the URL.

To retrieve the URL from the address bar, you can use the getRequestURL() method of the HttpServletRequest object. This method returns a StringBuffer object that contains the full URL of the request, including the protocol, server name, port number, and path.

Here's an example code snippet:


import javax.servlet.http.HttpServletRequest;
import java.net.MalformedURLException;
import java.net.URL;

public class UrlRetriever {

    public static URL getUrl(HttpServletRequest request) throws MalformedURLException {
        String url = request.getRequestURL().toString();
        return new URL(url);
    }
}

In this example, we define a getUrl() method that takes an HttpServletRequest object as a parameter and returns a URL object. The method first retrieves the URL as a String using the getRequestURL() method, and then creates a new URL object from the String using the URL constructor.

Note that the getRequestURL() method only returns the URL up to the path, and does not include any query parameters or fragments. If you need to retrieve these parts of the URL as well, you can use the getQueryString() and getFragment() methods of the HttpServletRequest object, respectively.

In summary, retrieving the URL from the browser's address bar using Java HttpServletRequest is a simple process that can be accomplished using the getRequestURL() method. By using this method, you can easily obtain the full URL of the current request and use it in your Java web application as needed.

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