The regular expression in Spring Expression Language SpEL [Annotation] | Spring Tutorial

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The regular expression in Spring Expression Language SpEL [Annotation] | Spring Tutorial

The regular expression in Spring Expression Language SpEL [Annotation] | Spring Tutorial

The regular expression in Spring Expression Language SpEL [Annotation] | Spring Tutorial

pom.xml

<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%20http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.5.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
    </dependencies>
</project>

Email.java

package com.ram.model;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("email")
public class Email
{

    @Value("ram@yahoo.com")
    private String emailId;

    @Value("100")
    private String contentId;

    public String getEmailId()
    {
        return emailId;
    }

    public void setEmailId(String emailId)
    {
        this.emailId = emailId;
    }

    public String getContentId()
    {
        return contentId;
    }

    public void setContentId(String contentId)
    {
        this.contentId = contentId;
    }

    @Override
    public String toString()
    {
        return "Email [emailId=" + emailId + ", contentId=" + contentId + "]";
    }

}

Employee.java

package com.ram.model;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("employee")
public class Employee
{
    @Value("10")
    private int id;

    @Value("Peter")
    private String name;

    private String digitRegEx = "\\d+";

    private String emailRegEx = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)"
            + "*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

    @Value("#{email.emailId matches employee.emailRegEx}")
    private String isValidEmail;

    @Value("#{email.contentId matches employee.digitRegEx}")
    private String isValidContentId;

    public int getId()
    {
        return id;
    }

    public void setId(int id)
    {
        this.id = id;
    }

    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public String getDigitRegEx()
    {
        return digitRegEx;
    }

    public void setDigitRegEx(String digitRegEx)
    {
        this.digitRegEx = digitRegEx;
    }

    public String getEmailRegEx()
    {
        return emailRegEx;
    }

    public void setEmailRegEx(String emailRegEx)
    {
        this.emailRegEx = emailRegEx;
    }

    public String getIsValidEmail()
    {
        return isValidEmail;
    }

    public void setIsValidEmail(String isValidEmail)
    {
        this.isValidEmail = isValidEmail;
    }

    public String getIsValidContentId()
    {
        return isValidContentId;
    }

    public void setIsValidContentId(String isValidContentId)
    {
        this.isValidContentId = isValidContentId;
    }

    @Override
    public String toString()
    {
        return "Employee [id=" + id + ", name=" + name + ", isValidEmail="
                + isValidEmail + ", isValidContentId=" + isValidContentId + "]";
    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <context:component-scan base-package="com.ram" />

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.model.Employee;
import com.ram.model.Email;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("---------------------------------------");

        Email email = (Email) context.getBean("email");
        System.out.println(email + "\n");

        Employee employee = (Employee) context.getBean("employee");
        System.out.println(employee);
    }

}

Output

Sep 21, 2018 9:44:02 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@736e9adb: startup date [Fri Sep 21 09:44:02 IST 2018]; root of context hierarchy
Sep 21, 2018 9:44:02 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
Email [emailId=ram@yahoo.com, contentId=100]

Employee [id=10, name=Peter, isValidEmail=true, isValidContentId=true]

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_Spring%20EL_Regular_exp_Annotation.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_Spring%20EL_Regular_exp_Annotation

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/41b19a6ea5ff82d0f409d467c69dd68cdbbf4a93/Spring_2018/SpringDemo_Spring%20EL_Regular_exp_Annotation/?at=master

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