Java Technologies: Spring4 MVC WebFlow Basic2 Project

Click here to download eclipse supported ZIP file

This is index.html JSP file and it is used display the output for the application.


<!DOCTYPE html>

<html>

<head>

<meta charset="ISO-8859-1">

<title>Insert title here</title>

</head>

<body>


<a href="/loginFlow">click here to login</a>


</body>

</html>

This is create_new_account.jsp JSP file and it is used display the output for the application.


<%@ page isELIgnored="false"%>


<html xmlns:form="http://www.springframework.org/tags/form">


<body>

	<form action="${flowExecutionUrl}&_eventId=accountInformationEntered" method="post">


		<input type="hidden" name="_flowExecutionKey"

			value="${flowExecutionKey}" /> <br /> <br /> Use any

		other login name and password for login error. <br /> <br />

		<table>

			<tr>

				<td>New Login Name:</td>

				<td><input type="text" name="loginName" /></td>

			</tr>

			<tr>

				<td>Enter Password:</td>

				<td><input type="text" name="password" /></td>

			</tr>

		</table>


		<br /> <input type="submit" value="Submit" />


	</form>

</body>

</html>

This is display_login.jsp JSP file and it is used display the output for the application.


<%@ page isELIgnored="false"%>


<html xmlns:form="http://www.springframework.org/tags/form">


<body>

	<form action="${flowExecutionUrl}&_eventId=loginCredentialsEntered" method="post">


		

			<input type="hidden" name="_flowExecutionKey"

			value="${flowExecutionKey}" /> <br /> Enter login name as <b>Chandra</b>

		and password as <b>password</b> for successful login. <br /> Use any

		other login name and password for login error. <br /> <br />

		<table>

			<tr>

				<td>Login Name:</td>

				<td><input type="text" name="loginName" /></td>

			</tr>

			<tr>

				<td>Password:</td>

				<td><input type="text" name="password" /></td>

			</tr>

			<%-- <tr>

				<td>Name Given subflow:</td>

				<td><%=request.getParameter("name") %></td>

			</tr> --%>

		</table>


		<br /> <input type="submit" value="Login" />


	</form>

<%-- 

	<a href="${flowExecutionUrl}&_eventId=createNewAccountRequested">Create New Account</a> --%>

</body>

</html>

This is display_login_error.jsp JSP file and it is used display the output for the application.


<html>

<body>

Your login credentials are incorrect.

<br/>

<br/>

<a href="./loginFlow">Go back to login page</a>

</body>

</html>

This is display_login_success.jsp JSP file and it is used display the output for the application.


<%@page import="com.cv.spring.webflow.*" %>


<html>

<body>

You have successfully logged in!!!

<br/>

<br/>


<% %> 

<a href="./loginFlow">Go back to login page</a>


</body>

</html>

This is InvalidCredentialsException.java file having the source code to execute business logic.

 
    
package com.cv.spring.webflow;

/**

 * @author Chandra Vardhan

 */

public class InvalidCredentialsException extends Exception{



  @Override

  public String getMessage() {

    return super.getMessage();

  }



  @Override

  public synchronized Throwable getCause() {

    return super.getCause();

  }



  @Override

  public StackTraceElement[] getStackTrace() {

    return super.getStackTrace();

  } 

 

}

This is LoginService.java file having the service/business logic to call the DAO layer and get the information from database.

 
    
package com.cv.spring.webflow;



import org.apache.log4j.Logger;



/**

 * @author Chandra Vardhan

 */

public class LoginService {

  

  private final static Logger LOGGER = Logger.getLogger(LoginService.class);

  

  public String performLogin(User user) throws InvalidCredentialsException {

    LOGGER.info("In LoginService.performLogin(-) method !!!");

    if (user != null) {

      String loginName = user.getLoginName();

      String password = user.getPassword();

      LOGGER.info("Entered credentials are, username = "+loginName + "and password = "+password);

      if (loginName != null

          && loginName.trim().equalsIgnoreCase("Chandra")

          && password != null

          && password.trim().equalsIgnoreCase("password")) {

        LOGGER.info("User successfully logged in, Credentials are correct!!!");

        // user successfully logged in

        return "success";

      } else {

        LOGGER.info("User failed logged in, Credentials are wrong!!!");

        LOGGER.info("Enter credentials as, username = Chandra and password = password");

        throw new InvalidCredentialsException();

      }

    } else {

      throw new InvalidCredentialsException();

    }

  }





}

This is User.java file having the source code to execute business logic.

 
    
package com.cv.spring.webflow;



import java.io.Serializable;

/**

 * @author Chandra Vardhan

 */

public class User implements Serializable {



  private String loginName;

  private String password;



  public String getLoginName() {

    return loginName;

  }



  public void setLoginName(String loginName) {

    this.loginName = loginName;

  }



  public String getPassword() {

    return password;

  }



  public void setPassword(String password) {

    this.password = password;

  }



}

This is pom.xml file having the entries of dependency jars and information to build the application .

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">.0" encoding="UTF-8"?>

	<modelVersion>4.0.0</modelVersion>
	<groupId>com.cv.spring.annotation</groupId>
	<artifactId>Spring4MVCWebFlowBasic2</artifactId>
	<name>Spring4MVCWebFlowBasic2</name>
	<packaging>war</packaging>
	<version>1.0</version>
	<properties>
		<java-version>1.8</java-version>
		<log4j-version>1.2.16</log4j-version>
		<org.springframework-version>4.2.0.RELEASE</org.springframework-version>
	</properties>
	<dependencies>
		
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.webflow</groupId>
			<artifactId>spring-webflow</artifactId>
			<version>2.4.2.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-expression</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

	</dependencies>

	<build>
		<pluginManagement>

			<plugins>
				<plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-compiler-plugin</artifactId>
					<version>3.1</version>
					<configuration>
						<source>1.8</source>
						<target>1.8</target>
					</configuration>
				</plugin>
				<plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-war-plugin</artifactId>
					<version>2.4</version>
					<configuration>
						<warSourceDirectory>src/main/webapp</warSourceDirectory>
						<warName>Spring4MVCWebFlowBasic2</warName>
						<failOnMissingWebXml>false</failOnMissingWebXml>
					</configuration>
				</plugin>
			</plugins>
		</pluginManagement>
	</build>

</project>

This is login-flow.xml file having the spring configuration properties.

 <?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/webflow
http://www.springframework.org/schema/webflow/spring-webflow-2.4.xsd">
	
	<var name="user" class="com.cv.spring.webflow.User" />
	<!-- Display the login page -->
	<view-state id="displayLoginView" view="/WEB-INF/views/display_login.jsp"
		model="user">
		<transition on="loginCredentialsEntered" to="performLoginAction" />
	</view-state>
	<action-state id="performLoginAction">
		<evaluate expression="loginService.performLogin(user)" />
		<transition to="displayLoginSuccessView" />
		<transition on-exception="com.cv.spring.webflow.InvalidCredentialsException"
			to="displayLoginErrorView" />
	</action-state>
	<view-state id="displayLoginSuccessView" view="/WEB-INF/views/display_login_success.jsp" />
	<view-state id="displayLoginErrorView" view="/WEB-INF/views/display_login_error.jsp" />
</flow>

This is login-servlet-config.xml file having the spring configuration properties.

 <beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc
	http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
	http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-4.0.xsd">
	<mvc:annotation-driven />
	<context:component-scan base-package="com.cv.spring.webflow" />
	<!--Define FlowHandlerMapping to tell DispatcherServlet (in web.xml) to 
		send flow requests to Spring Web Flow -->
	<bean class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
		<property name="flowRegistry" ref="loginFlowRegistry" />
	</bean>
	<!-- Define FlowHandlerAdapter to handle Spring Web Flow request call. This 
		is the Controller class in Spring Web Flow -->
	<bean class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
		<property name="flowExecutor" ref="loginFlowExecutor" />
	</bean>
</beans>

This is login-webflow-config.xml file having the spring configuration properties.

 <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:flow="http://www.springframework.org/schema/webflow-config"
	xsi:schemaLocation="http://www.springframework.org/schema/webflow-config
http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
	<flow:flow-executor id="loginFlowExecutor"
		flow-registry="loginFlowRegistry" />
	<!-- Define the registry that holds references to all the flow related XML 
		configuration -->
	<flow:flow-registry id="loginFlowRegistry">
		<flow:flow-location id="loginFlow"
			path="/WEB-INF/flows/login-flow.xml" />
	</flow:flow-registry>
</beans>

This is spring-config.xml file having the spring configuration properties.

 <beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
	<bean id="loginService" class="com.cv.spring.webflow.LoginService" />
</beans>

This is web.xml deployment descriptor file and it describes how the web application should be deployed.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	version="2.5">
	<display-name>Spring Web Flow</display-name>
	<servlet>
		<servlet-name>login</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>
		/WEB-INF/flows/login-servlet-config.xml
		/WEB-INF/flows/login-webflow-config.xml
		/WEB-INF/flows/spring-config.xml
			</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>login</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
	</welcome-file-list>
</web-app>

This is log4j.properties file having the entries for logging the information into the console/file.

#By default enabling Console appender
# Root logger option
log4j.rootLogger=INFO, stdout

# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n

# Redirect log messages to a log file
#log4j.appender.file=org.apache.log4j.RollingFileAppender
#log4j.appender.file.File=C:\servlet-application.log
#log4j.appender.file.MaxFileSize=5MB
#log4j.appender.file.MaxBackupIndex=10
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

Java Technologies

Spring4 MVC WebFlow Basic2 Project

Click here to download eclipse supported ZIP file

This is index.html JSP file and it is used display the output for the application.

This is create_new_account.jsp JSP file and it is used display the output for the application.

This is display_login.jsp JSP file and it is used display the output for the application.

This is display_login_error.jsp JSP file and it is used display the output for the application.

This is display_login_success.jsp JSP file and it is used display the output for the application.

This is InvalidCredentialsException.java file having the source code to execute business logic.

This is LoginService.java file having the service/business logic to call the DAO layer and get the information from database.

This is User.java file having the source code to execute business logic.

This is pom.xml file having the entries of dependency jars and information to build the application .

This is login-flow.xml file having the spring configuration properties.

This is login-servlet-config.xml file having the spring configuration properties.

This is login-webflow-config.xml file having the spring configuration properties.

This is spring-config.xml file having the spring configuration properties.

This is web.xml deployment descriptor file and it describes how the web application should be deployed.

This is log4j.properties file having the entries for logging the information into the console/file.

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