First select the menu File-new-maven project and tick the "Create a &simple project (skip archetype selection)" Entry:
Create a new MAVEN project, first configure the Web. XML (web-inf directory) file to find <welcome-file> modify the name and file name </welcome-file> for your newly created main page; I'm building a new Add.
So for <welcome-file>add.jsp</welcome-file>
ADD.JSP file is the main page of the addition program, its code is
<%@ 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" >
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
<title> Login Screen </title>
<body>
<form action= "Add" method= "POST" >
<input type= "text" name= "Num1"/>
+<input type= "text" name= "num2"/>
<input type= "Submit" value= "="/>
</form>
</body>
(Note: The value of the name attribute in the input tag must be the same as the value in the new Java program)
Then create a new Java program to perform the addition of numbers, with the following specific code:
Package com.cqvie.action;
Import Com.opensymphony.xwork2.ActionSupport;
public class Addaction extends Actionsupport {
private int num1, num2, sum;
public int getNum1 () {
return NUM1;
}
public void setNum1 (int num1) {
THIS.NUM1 = NUM1;
}
public int getNum2 () {
return num2;
}
public void setNum2 (int num2) {
this.num2 = num2;
}
public int getsum () {
return sum;
}
public void setsum (int sum) {
This.sum = sum;
}
Public String Add () {
sum = Num1 + num2;
Return "Success";
}
}
(Note that the new file inherits from the Actionsupport, there is a small flaw, with an int instead of a string is because the STRNG involves the conversion of characters more troublesome)
The top 2 programs have the main page, the addition of the program is also available, the next is to receive the added value after the
New JSP file named Add_success, the code is as follows
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
<body>
<s:property value= "sum"/>//receive the result of the addition
</body>
Last configuration Stracts.xml file (Resources directory)
The code after its configuration is as follows
<struts>
<constant name= "struts.i18n.encoding" value= "Utf-8" ></constant>
<constant name= "struts.multipart.maxSize" value= "20971520"/>
<constant name= "Struts.devmode" value= "true"/>
<package name= "P_user" namespace= "/" extends= "Struts-default" >
<action name= "Add" class= "Com.cqvie.action.AddAction"
method= "Add" >
<result name= "Success" >
/add_success.jsp
</result>
</action>
</package>
</struts>
The addition program succeeds here and then runs:
Run-run configurations
Enter URL validation: http://localhost:9527/
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