Business Logic Beans:- Model Components in Struts Frameworks
Business Logic Beans:- Model Components in Struts Frameworks
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Business Logic Beans:- Model Components in Struts FrameworksThe model components in struts1.3 framework provide the facility to developed the business logic bean ,it means that struts1.3 framework provide the facility to insert data, fetch data, update data and delete data in database using JDBC API in java application development. It also provide the facility to plug in ORM framework to persist data, fetch data, update data and delete data in your data base.
The following source code which are connect to the database and Persist (insert data in the database) all data using web browser which are persist in the database table. The following source code using the MySql database connection using JDBC API in java platform.Directory Structure of Login Example in Struts 1.3 Using MyEclipse IDEindex.jsp<%@taglib uri="http://struts.apache.org/tags-html" prefix="html" %> <html> <head> <title>Login Form</title> </head> <body> <html:form action="/login" > <table border="1" bordercolor="red"> <tr> <td width="500px" align="center" height="50px" style="background: gray;" valign="middle"> <h3 style="color:lime;">Login Example in Struts 1.3 Using MySql Database</h3></td> </tr> <tr><td align="center" width="250px" height="150px" style="background: gray;"> <table> <tr> <td>User Name</td> <td><html:text name="loginForm" property="name"/></td> </tr> <tr> <td>Password</td> <td> <html:password name="loginForm" property="password"/></td> </tr> <tr> <td colspan="2" align="right"> <html:submit value="login"/></td> </tr> </table></td></tr> </table> </html:form> </body> </html>web.xml<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>action</servlet-name> <servlet-class>org.apache.struts.action.ActionServlet</servlet-class> <init-param> <param-name>config</param-name> <param-value>/WEB-INF/struts-config.xml</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>3</param-value> </init-param> <init-param> <param-name>detail</param-name> <param-value>3</param-value> </init-param> <load-on-startup>0</load-on-startup> </servlet> <servlet-mapping> <servlet-name>action</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>struts-config.xml<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd"> <struts-config> <form-beans> <form-bean name="loginForm" type="org.r4r.struts.LoginForm"/> </form-beans> <global-exceptions /> <global-forwards> <forward name="login" path="/login.do"/> </global-forwards> <action-mappings> <action path="/login" type="org.r4r.struts.LoginAction" name="loginForm"> <forward name="success" path="/success.jsp"/> <forward name="error" path="/error.jsp"/> </action> </action-mappings> <message-resources parameter="org.r4r.struts.ApplicationResources" /> </struts-config>LoginForm.javapackage org.r4r.struts; import org.apache.struts.action.ActionForm; @SuppressWarnings("serial") public class LoginForm extends ActionForm { private String name; private String password; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }LoginAction.javapackage org.r4r.struts; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; public class LoginAction extends Action { public ActionForward execute(ActionMapping mapping,ActionForm form, HttpServletRequest request,HttpServletResponse response){ LoginForm loginForm=(LoginForm)form; DAO dao=new DAO(); if(dao.find(loginForm.getName(), loginForm.getPassword())){ return mapping.findForward("success"); }else{ return mapping.findForward("error"); } } }DAO.javapackage org.r4r.struts; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; public class DAO { public boolean find(String name,String password){ try{ Class.forName("com.mysql.jdbc.Driver"); Connection con=DriverManager.getConnection ("jdbc:mysql://localhost/test","root","root"); PreparedStatement stmt=con.prepareStatement ("select * from user where name=? and password=?"); stmt.setString(1, name); stmt.setString(2, password); ResultSet rset=stmt.executeQuery(); while(rset.next()){ return true; } }catch(Exception e){ System.out.println(e); } return false; } }success.jsp<%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %> <html> <head> <title>Login Form</title> </head> <body> <table border="1" bordercolor="red"> <tr> <td width="500px" align="center" height="50px" style="background: gray;" valign="middle"> <h3 style="color:lime;"> Login Example in Struts 1.3 Using MySql Database</h3></td> </tr> <tr><td align="center" width="250px" height="150px" style="background: gray;"> <table> <tr> <td>Welcome, <bean:write name="loginForm" property="name"/> <br/><br/><a href="index.jsp">Logout</a> </td> </tr> </table></td></tr> </table> </body> </html>error.jsp<%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %> <html> <head> <title>Login Form</title> </head> <body> <table border="1" bordercolor="red"> <tr> <td width="500px" align="center" height="50px" style="background: gray;color:red;" valign="middle"> <h3>Sorry, <bean:write name="loginForm" property="name"/></h3><h4> You are not valid user please try again.</h4></td> </tr> <tr><td align="center" width="250px" height="150px" style="background: gray;"> <table> <tr> <td> <br/><br/><jsp:include page="index.jsp"></jsp:include> </td> </tr> </table></td></tr> </table> </body> </html>Output
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