What is sendRedirect in Servlet?

SendRedirect in servlet The sendRedirect() method of HttpServletResponse interface can be used to redirect response to another resource, it may be servlet, jsp or html file. It accepts relative as well as absolute URL. It works at client side because it uses the url bar of the browser to make another request.

How does filter work in Servlet?

A Servlet Filter in a Java Web Application When a HTTP request arrives at your web application which the filter intercepts, the filter can inspect the request URI, the request parameters and the request headers, and based on that decide if it wants to block or forward the request to the target servlet, JSP etc.

Why filter is used in servlet?

A filter is an object that is invoked at the preprocessing and postprocessing of a request. It is mainly used to perform filtering tasks such as conversion, logging, compression, encryption and decryption, input validation etc. The servlet filter is pluggable, i.e. its entry is defined in the web.

How we can filter request and response in servlet?

The filtering API is defined by the Filter, FilterChain, and FilterConfig interfaces in the javax. servlet package. You define a filter by implementing the Filter interface. The most important method in this interface is doFilter, which is passed request, response, and filter chain objects.

How is the sendredirect ( ) method used in servlet?

Introduction to sendRedirect() Method. sendRedirect() method redirects the response to another resource. This method actually makes the client(browser) to create a new request to get to the resource. The client can see the new url in the browser.

How does sendredirect ( ) work in JavaScript?

sendRedirect() method redirects the response to another resource. This method actually makes the client(browser) to create a new request to get to the resource. The client can see the new url in the browser. sendRedirect() accepts relative URL, so it can go for resources inside or outside the server.

What’s the difference between forward and sendredirect in Java?

sendRedirect() method. The forward() method works at server side. The sendRedirect() method works at client side. It sends the same request and response objects to another servlet. It always sends a new request. It can work within the server only. It can be used within and outside the server.

How to redirect in a Servlet Filter?

In Filter the response is of ServletResponse rather than HttpServletResponse. Hence do the cast to HttpServletResponse. Also don’t forget to call return; at the end. from filter and the normal flow will go ahead.