How to read values from web xml in java?
How to read values from web xml in java?
and where you want to get the value you must do it like this : Context ctx = new InitialContext(); Context env = (Context) ctx. lookup(“java:comp/env”); final String fileName = (String) env. lookup(“properties-file”);
How to use Context param in web xml?
You set each context-param within a single context-param element, using and elements. You can access these parameters in your code using the javax. servlet….
| Element | Required/ Optional | Description |
|---|---|---|
| Required | The name of a parameter. | |
| Required | The value of a parameter. |
What does web xml contain?
Web. xml is called as deployment descriptor file and its is is an XML file that contains information on the configuration of the web application, including the configuration of servlets.
How do I get data in servlet which passed from HTML?
How to handle HTML form data with Java Servlet
- method=”post”: to send the form data as an HTTP POST request to the server. Generally, form submission should be done in HTTP POST method.
- action=”URL of the servlet”: specifies relative URL of the servlet which is responsible for handling data posted from this form.
How do I map a servlet in web xml?
To map a URL to a servlet, you declare the servlet with the element, then define a mapping from a URL path to a servlet declaration with the element.
How can I access servlet initialization parameters?
To retrieve initialization parameters, call the getInitParameter(String name) method from the parent javax. servlet. GenericServlet class. When passed the name of the parameter, this method returns the parameter’s value as a String .
How pass data from HTML to Java?
Is web xml a servlet?
web. xml is part of the servlet standard for web applications.
