Spring - Resource bundle with ResourceBundleMessageSource example

Ref:- http://www.mkyong.com/spring/spring-resource-bundle-with-resourcebundlemessagesource-example/

In Spring, you can use ResourceBundleMessageSource to resolve text messages from properties file, base on the selected locales. See following example :

1. Directory Structure

Review directory structure of this example.

2. Properties file

Create two properties files, one for English characters (messages_en_US.properties), other one for Chinese characters (messages_zh_CN.properties). Put it into the project class path (see figure above).

File : messages_en_US.properties

customer.name=Yong Mook Kim, age : {0}, URL : {1}

File : messages_zh_CN.properties

customer.name=\ufeff\u6768\u6728\u91d1, age : {0}, URL : {1}

The ‘\ufeff\u6768\u6728\u91d1‘ is Unicode characters in Chinese.

3. Bean configuration file

Include the properties file into the bean configuration file. Both “messages_en_US.properties” and “messages_zh_CN.properties” are consider one file in Spring, you just need to include the file name once, and Spring will find the correct locale automatically.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

 <bean id="messageSource"
  class="org.springframework.context.support.ResourceBundleMessageSource">
  <property name="basename">
   <value>locale\customer\messages</value>
  </property>
 </bean>

</beans>

P.S Assume both files are located at “resources\locale\customer\” folder.

4. Run it

package com.mkyong.common;

import java.util.Locale;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

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

  String name = context.getMessage("customer.name", 
    new Object[] { 28,"http://www.mkyong.com" }, Locale.US);

  System.out.println("Customer name (English) : " + name);

  String namechinese = context.getMessage("customer.name", 
    new Object[] {28, "http://www.mkyong.com" }, 
                                        Locale.SIMPLIFIED_CHINESE);

  System.out.println("Customer name (Chinese) : " + namechinese);

 }
}

Output

Note
Make sure your Eclipse is able to display Chinese output.

Explanation

1. In context.getMessage(), the second argument is message parameters, you have to pass it as object array. You can just pass a null if no parameter values available.

 context.getMessage("customer.name",null, Locale.US);

2. The Locale.US will retrieve the messages from ‘messages_en_US.properties‘, while Locale.SIMPLIFIED_CHINESE will retrieve the messages from ‘messages_zh_CN.properties‘.