Thymeleafをホットデプロイして使う

いちいちテンプレートを修正したらサーバを起動し直すのが面倒だったのでホットデプロイできるようにした

セットアップ

build.gradle

• springloaded をdependenciesに追加

plugins {
    id 'org.springframework.boot' version '2.5.0'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

repositories {
    mavenCentral()
}

dependencies {
    compileOnly 'org.projectlombok:lombok'
    implementation 'org.slf4j:slf4j-api'
    implementation 'ch.qos.logback:logback-core'
    implementation 'ch.qos.logback:logback-classic'
    implementation 'com.google.guava:guava:30.1.1-jre'
    implementation 'org.apache.commons:commons-lang3'
    implementation 'commons-beanutils:commons-beanutils:1.9.2'
    implementation 'com.amazonaws:aws-java-sdk-dynamodb:1.12.9'
    implementation 'org.springframework.boot:spring-boot-starter'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.1.4'
    implementation 'org.springframework:springloaded:1.2.8.RELEASE'
    runtimeOnly 'mysql:mysql-connector-java' 
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

test {
    useJUnitPlatform()
}

application.yml

• テンプレートのキャッシュを無効化するため、「spring.thymeleaf.cache=false」の設定を追加

server:
  servlet:
    context-path: /sample
spring:
  messages:
    basename: "application-messages,ValidationMessages"
    encoding: "UTF-8"
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:33060/sample
    username: mysql-app
    password: mysql-app
  thymeleaf:
    cache: false
mybatis:
  configuration:
    map-underscore-to-camel-case: true
logging:
  level:
    org:
      springframework: WARN
    com:
      example:
        demo:
          domain:
            mapper: DEBUG