What does Response getOutputStream do?
getOutputStream. Returns a ServletOutputStream suitable for writing binary data in the response. The servlet container does not encode the binary data. Either this method or getWriter() may be called to write the body, not both.
What is servlet response?
When client sends a request to web server, the servlet container creates HttpServletRequest and HttpServletResponse objects and passes them as an argument to the servlet service() method. The response object allows you to format and send the response back to the client.
What is response setContentType?
setContentType. void setContentType(java.lang.String type) Sets the content type of the response being sent to the client, if the response has not been committed yet. The given content type may include a character encoding specification, for example, text/html;charset=UTF-8 .
Should I close HttpServletResponse OutputStream?
One can infer from that official Sun article that closing the OutputStream from a servlet is something that is a normal occurrence, but is not mandatory. The general rule of them is this: if you opened the stream, then you should close it. If you didn’t, you shouldn’t. Make sure the code is symmetric.
What is the use of ServletOutputStream?
Class ServletOutputStream. Provides an output stream for sending binary data to the client. A ServletOutputStream object is normally retrieved via the ServletResponse.
What is Java getOutputStream?
The getOutputStream() method of Java Socket class returns an output stream for the given socket. If you close the returned OutputStream then it will close the linked socket.
What is HTTP servlet response interface?
HttpServletResponse is a predefined interface present in javax. servlet. http package. It can be said that it is a mirror image of request object. The response object is where the servlet can write information about the data it will send back.
What is request and response in servlet?
The container passes the ServletRequest and the ServletResponse objects as an argument to the service() method of a corresponding servlet. The ServletRequest object contains header and body information of data that come with request.
Which method defined in HTTP servlet response may be used to set the content type?
The class HttpServletResponse defines the getWriter method. B. setContentType sets the content type of the response being sent to the client.
Why PrintWriter is used in servlet?
To send binary data in a MIME body response, use the ServletOutputStream returned by getOutputStream() . To send character data, use the PrintWriter object returned by getWriter() ….javax.servlet. Interface ServletResponse.
Method Summary | |
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java.io.PrintWriter | getWriter() Returns a PrintWriter object that can send character text to the client. |
Should I close ServletOutputStream?
I don’t think web app developers need to close ServletOutputStream or PrintWriter in servlet classes. They are created and managed by the web container, and web components should not interfere with its lifecycle. In short, don’t close servlet OutputStream or PrintWriter , just as you won’t close System.
What is PrintWriter in servlet?
PrintWriter: prints text data to a character stream. getWriter :Returns a PrintWriter object that can send character text to the client.