05 springBoot

2023-09/spring-05-springBoot/.gitignore

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+target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/build/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/

2023-09/spring-05-springBoot/pom.xml

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+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-05-springBoot</artifactId>
+    <version>1.0</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.1.4</version>
+    </parent>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>17</maven.compiler.source>
+
+        <maven-enforcer-plugin.version>3.1.0</maven-enforcer-plugin.version>
+        <minimal.maven.version>3.3.9</minimal.maven.version>
+    </properties>
+
+
+    <!-- Стартеры -->
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+    </dependencies>
+
+    <!-- собираем "жирный" jar-ник-->
+    <build>
+        <plugins>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <version>${maven-enforcer-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>enforce-maven</id>
+                        <goals>
+                            <goal>enforce</goal>
+                        </goals>
+                        <configuration>
+                            <rules>
+                                <dependencyConvergence/>
+                                <requireMavenVersion>
+                                    <version>${minimal.maven.version}</version>
+                                </requireMavenVersion>
+                            </rules>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <executable>true</executable>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

2023-09/spring-05-springBoot/src/main/java/ru/otus/SpringBootDemo.java

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+package ru.otus;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringBootDemo {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootDemo.class, args);
+    }
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/commandlinerunners/PreparationDev.java

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+package ru.otus.commandlinerunners;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+import java.util.Arrays;
+import ru.otus.service.GreetingService;
+
+
+@Component
+public class PreparationDev implements CommandLineRunner {
+    private static final Logger logger = LoggerFactory.getLogger(PreparationDev.class);
+
+    private final GreetingService greetingService;
+
+    public PreparationDev(GreetingService greetingService) {
+        this.greetingService = greetingService;
+    }
+
+    @Override
+    public void run(String... args) {
+        //args парметры, котрые могут быть переданы в Main
+        var applArgs = Arrays.toString(args);
+        logger.info("DEV mode!!! Что-то настравиваем и подготавливаем, параметры: {} ", applArgs);
+
+        var reply = greetingService.sayHello("Ivan");
+        logger.info("reply:{}", reply);
+    }
+
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/configs/AppProps.java

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+package ru.otus.configs;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+import java.util.Locale;
+import org.springframework.boot.context.properties.bind.ConstructorBinding;
+
+@ConfigurationProperties(prefix = "application")
+public class AppProps {
+    private final String message;
+    private final Locale locale;
+
+    @ConstructorBinding
+    public AppProps(String message, Locale locale) {
+        this.message = message;
+        this.locale = locale;
+    }
+    public String getMessage() {
+        return message;
+    }
+    public Locale getLocale() {
+        return locale;
+    }
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/configs/ApplicationConfig.java

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+package ru.otus.configs;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableConfigurationProperties(AppProps.class)
+public class ApplicationConfig {
+
+
+    @Bean
+    public ApplicationMessage applicationMessage(@Value("${application.message}") String message) {
+        return new ApplicationMessage(message);
+    }
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/configs/ApplicationMessage.java

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+package ru.otus.configs;
+
+public record ApplicationMessage(String message) {
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/service/GreetingService.java

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+package ru.otus.service;
+
+import java.util.Map;
+
+public interface GreetingService {
+    Map<String, String> sayHello(String name);
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/service/GreetingServiceServiceImpl.java

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+package ru.otus.service;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.MessageSource;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+import ru.otus.configs.AppProps;
+
+@Service
+public class GreetingServiceServiceImpl implements GreetingService {
+    private static final Logger logger = LoggerFactory.getLogger(GreetingServiceServiceImpl.class);
+    private final MessageSource messageSource;
+    private final AppProps props;
+
+    public GreetingServiceServiceImpl(MessageSource messageSource, AppProps props) {
+        this.messageSource = messageSource;
+        this.props = props;
+    }
+
+    @Override
+    public Map<String, String> sayHello(String name) {
+        var messageLocalized = messageSource.getMessage("hello.user", new String[]{"Ivan"}, props.getLocale());
+        logger.info("Localization:{}", messageLocalized);
+
+        Map<String, String> map = new HashMap<>();
+        map.put(name, messageLocalized);
+        return map;
+    }
+}

2023-09/spring-05-springBoot/src/main/java/ru/otus/service/LocalHello.java

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+package ru.otus.service;
+
+import jakarta.annotation.PostConstruct;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import ru.otus.configs.AppProps;
+import ru.otus.configs.ApplicationMessage;
+
+
+@Component
+public class LocalHello {
+    private static final Logger logger = LoggerFactory.getLogger(LocalHello.class);
+
+    private final AppProps props;
+    private final String message;
+
+    public LocalHello(AppProps props, ApplicationMessage applicationMessage) {
+        this.props = props;
+        this.message = applicationMessage.message();
+    }
+
+    //!!! Вообще, PostConstruct - это плохая практика !!!
+    @PostConstruct
+    public void printHello() {
+        logger.info("message from props:{}", props.getMessage());
+        logger.info("message:{}", message);
+    }
+}

2023-09/spring-05-springBoot/src/main/resources/application.yml

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+spring:
+  messages:
+    basename: "i18n/appmessages"
+    encoding: "UTF-8"
+
+application:
+  message: "Test Props msg"
+  locale: ru_RU

2023-09/spring-05-springBoot/src/main/resources/banner.txt

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+Custom banner...

2023-09/spring-05-springBoot/src/main/resources/i18n/appmessages_en.properties

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+hello.user="Hello, {0}"!

2023-09/spring-05-springBoot/src/main/resources/i18n/appmessages_ru_RU.properties

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+hello.user="Привет, Иван {0}"!

2023-09/spring-05-springBoot/src/main/resources/logback.xml

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+<configuration scan="true" scanPeriod="10 seconds">
+    <jmxConfigurator />
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>