If you want
to access, HttpServletRequest object from your action class, you can do this by
implementing ServletRequestAware interface.
Step 1: Create new maven project “struts_tutorial”. Follow
first 3 steps from the following link to make the project setup.
Step 2: Create new jsp file “register.jsp”.
register.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form method="post" action="registration"> User Name : <input type="text" name="userName" /><br /> passowrd : <input type="password" name="password" /><br /> mailId : <input type="text" name="mailId" /><br /> <input type="submit" value="submit" /> </form> </body> </html>
Step 3: create struts.xml. Since Struts 2 requires
struts.xml to be present in classes folder. So create struts.xml file under the
WebContent/WEB-INF/classes folder. Eclipse does not create the
"classes" folder by default, so you need to do this yourself. To do
this, right click on the WEB-INF folder in the project explorer and select New
> Folder.
struts.xml
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="default" extends="struts-default"> <action name="registration" class="learn.struts.RegisterAction"> <result name="hello">/helloWorld.jsp</result> </action> </package> </struts>
Step 4: Create a package “learn.struts”. Create class
RegisterAction.java inside this package.
package learn.struts; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.interceptor.ServletRequestAware; public class RegisterAction implements ServletRequestAware { private HttpServletRequest request; public String execute() { System.out.println(request.getParameter("userName")); System.out.println(request.getParameter("password")); System.out.println(request.getParameter("mailId")); return "hello"; } @Override public void setServletRequest(HttpServletRequest request) { this.request = request; } }
Run register.jsp,
with some inputs, you will get the input data in console.
Final project
structure looks like following.
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