[Spring Boot] 개발환경 구축 - Messages

AppSpringBoot.zip

0.08MB

SimpleSpringBoot.zip

0.08MB

개발환경

1. STS 버전 : 4.13.1

2. JDK 버전 : OpenJDK 11.0.14_9_x64

3. Tomcat 버전 : 9.0.71

4. Maven 버전 : 3.8.4

5. Spring 버전 : Spring Boot 2.7.8

6. Thymeleaf 3.0.15

---

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.7.8</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>simple.spring</groupId>
	<artifactId>AppSpringBoot</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>AppSpringBoot</name>
	<description>Simple Spring Boot Project</description>
	<properties>
		<java.version>11</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.3.0</version>
		</dependency>
        
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.postgresql</groupId>
			<artifactId>postgresql</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<excludes>
						<exclude>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
						</exclude>
					</excludes>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>

MessageConfig.java

package simple.spring.config;

import java.io.IOException;

import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.MessageSourceAccessor;
import org.springframework.context.support.ReloadableResourceBundleMessageSource;

@Configuration
public class MessageConfig {
	@Bean
	public MessageSource messageSource() throws IOException {
		ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
		messageSource.setBasenames("classpath:/messages/messages", "classpath:/messages/label");
		messageSource.setDefaultEncoding("UTF-8");
		// locale에 해당하는 file이 없을 경우 system locale을 사용
		messageSource.setFallbackToSystemLocale(false);
		return messageSource;
	}

	@Bean
	public MessageSourceAccessor messageSourceAccessor() throws IOException {
		return new MessageSourceAccessor(messageSource());
	}
}

ThymeleafController.java

package simple.spring.basic;

import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.support.MessageSourceAccessor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class ThymeleafController {
	private final Logger logger = LoggerFactory.getLogger(this.getClass());

	@Autowired
	private MessageSourceAccessor messageSourceAccessor;

	@GetMapping("/thymeleaf")
	public String hello() {
		return "thymeleaf";
	}
	
	@GetMapping("/message")
	public String message() {

		logger.info("en_US : " + messageSourceAccessor.getMessage("common.start_message", Locale.US));
		logger.info("ko_KR : " + messageSourceAccessor.getMessage("common.start_message", Locale.KOREA));

		return "message";
	}

}

message.html

<!-- 네임 스페이스를 하나 추가 해 줍니다. -->
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>MessageSource Sample</title>
</head>
<body>
    <h1 th:text="#{label.message}">메세지가 보여질 예정</h1>
</body>
</html>

---

Spring Messages 처리를 application.properties 파일에서 설정할수도 있습니다.

application.properties

#Server port
server.port=8081
server.servlet.context-path=/
#
server.servlet.encoding.enabled=true
server.servlet.encoding.charset=UTF-8
server.servlet.encoding.force=true
# 기본단위 : 초
server.servlet.session.timeout=120
# Spring Default : UTF-8
server.tomcat.uri-encoding=UTF-8
#
spring.thymeleaf.cache=false

##############################################################
# Spring Message 처리
spring.messages.basename=messages/messages, messages/label
spring.messages.encoding=UTF-8
# locale에 해당하는 file이 없을 경우 system locale을 사용
# default : true
spring.messages.fallback-to-system-locale=false
# 해당 코드를 찾을 수 없을 경우 Code 를 출력한다.
# default : false
spring.messages.use-code-as-default-message=true

MessageConfig.java

package simple.spring.config;

import java.io.IOException;

import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.MessageSourceAccessor;

@Configuration
public class MessageConfig {

	/**
	 * <pre>
	 * MessageSourceAccessor
	 * - 다양한 getMessage 메서드를 제공하는 MessageSource를 쉽게 접근하게 해주는 helper class
	 * </pre>
	 * 
	 * @return
	 * @throws IOException
	 */
	@Bean
	public MessageSourceAccessor messageSourceAccessor(MessageSource messageSource) {
		return new MessageSourceAccessor(messageSource);
	}
}

MessageSource의 Helper class인 MessageSourceAccessor 를 사용하기 위해서는 Configuration 셋팅이 추가되어야 합니다.

결론은 application.properties 에서 설정할 수도 있지만, 좀 더 디테일한 설정을 위해서는 application.properties 설정보다 Configuration 설정이 좋을 것 같습니다.

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https://hermeslog.tistory.com/663

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