Spring Expression Language – Accessing Map[XML] | Spring Tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=aSrZiWwI9w8&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

Spring Expression Language – Accessing Map[XML] | Spring Tutorial

Spring Expression Language – Accessing Map[XML] | Spring Tutorial

Spring Expression Language – Accessing Map[XML] | 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>

AddressInfo.java

package com.ram.model;

import java.util.LinkedHashMap;
import java.util.Map;

public class AddressInfo
{

    private Map<Integer, String> addressMap;

    public AddressInfo()
    {
        addressMap = new LinkedHashMap<Integer, String>();
        addressMap.put(1, "B220-East Street-London");
        addressMap.put(2, "A220-West Street-London");
        addressMap.put(3, "C220-North Street-London");
    }

    public Map<Integer, String> getAddressMap()
    {
        return addressMap;
    }

    public void setAddressMap(Map<Integer, String> addressMap)
    {
        this.addressMap = addressMap;
    }

    @Override
    public String toString()
    {
        return "AddressInfo [addressMap=" + addressMap + "]";
    }

}

Employee.java

package com.ram.model;

public class Employee
{
    private int id;
    private String name;
    private String firstAddress;
    private String secondAddress;

    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 getFirstAddress()
    {
        return firstAddress;
    }

    public void setFirstAddress(String firstAddress)
    {
        this.firstAddress = firstAddress;
    }

    public String getSecondAddress()
    {
        return secondAddress;
    }

    public void setSecondAddress(String secondAddress)
    {
        this.secondAddress = secondAddress;
    }

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

}

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">

    <bean id="addressInfo" class="com.ram.model.AddressInfo" />

    <bean id="employee" class="com.ram.model.Employee">
        <property name="id" value="10"></property>
        <property name="name" value="Peter"></property>
        <property name="firstAddress" value="#{addressInfo.addressMap[1]}"></property>
        <property name="secondAddress" value="#{addressInfo.addressMap[2]}"></property>
    </bean>

</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.AddressInfo;

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

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

        AddressInfo addressInfo = (AddressInfo) context.getBean("addressInfo");
        System.out.println(addressInfo + "\n");

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

}

Output

Sep 16, 2018 10:21:55 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@736e9adb: startup date [Sun Sep 16 10:21:55 IST 2018]; root of context hierarchy
Sep 16, 2018 10:21:56 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
AddressInfo [addressMap={1=B220-East Street-London, 2=A220-West Street-London, 3=C220-North Street-London}]

Employee [id=10, name=Peter, firstAddress=B220-East Street-London, secondAddress=A220-West Street-London]

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

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

Bitbucket Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_Spring%20EL_accessing_Map_XML

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial