Spring Boot 快速遷移至 Quarkus
阿新 • • 發佈:2021-01-21
Quarkus 是一個目前非常火的 Java 應用開發框架,定位是輕量級的微服務框架。,Quarkus 提供了優秀的容器化整合能力,相較於傳統開發框架(Spring Boot)有著更快的啟動速度、更小的記憶體消耗、更短的服務響應。
本文將演示將 SpringBoot 遷移至 Quarkus
Spring Boot 示例程式
使用 JPA 完成 資料庫的增刪改查操作,基礎程式碼如下
- maven 依賴
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
- jpa crud
public interface DemoUserDao extends CrudRepository<DemoUser, Long> {
}
遷移至 Quarkus
- quarkus-bom 管理了全部 quarkus 外掛 maven 依賴的版本資訊,引入後所有依賴不需要再定義版本。
<dependencyManagement> <dependencies> <dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-bom</artifactId> <version>1.10.5.Final</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement>
- 遷移 spring-web 、spring-jpa 至 quarkus 技術棧。
<dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-spring-data-jpa</artifactId> </dependency> <dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-spring-web</artifactId> </dependency>
- 配置檔案調整 (還是在 application.yml)
quarkus.datasource.db-kind=mysql
quarkus.datasource.jdbc.driver=com.mysql.cj.jdbc.Driver
quarkus.datasource.username=root
quarkus.datasource.password=root
quarkus.datasource.jdbc.url=jdbc:mysql://localhost:3306/pig_demo?useUnicode=true&characterEncoding=utf8&autoReconnect=true&rewriteBatchedStatements=TRUE
- Main 方法調整為 實現
QuarkusApplication
,且需要通過Quarkus.waitForExit()
保持服務執行。
@QuarkusMain
public class SimpleApplication implements QuarkusApplication {
public static void main(String[] args) {
Quarkus.run(SimpleApplication.class,args);
}
@Override
public int run(String... args) {
Quarkus.waitForExit();
return 0;
}
}
啟動執行
main 方法啟動, 輸出 Quarkus banner
__ ____ __ _____ ___ __ ____ ______
--/ __ \/ / / / _ | / _ \/ //_/ / / / __/
-/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \
--\___\_\____/_/ |_/_/|_/_/|_|\____/___/
2021-01-12 22:31:46,341 INFO [io.qua.arc.pro.BeanProcessor] (build-21) Found unrecommended usage of private members (use package-private instead) in application beans:
- @Inject field com.example.simple.controller.DemoController#userDao
2021-01-12 22:31:48,702 INFO [io.quarkus] (Quarkus Main Thread) Quarkus 1.10.5.Final on JVM started in 4.613s. Listening on: http://localhost:8080
2021-01-12 22:31:48,703 INFO [io.quarkus] (Quarkus Main Thread) Profile dev activated. Live Coding activated.
2021-01-12 22:31:48,703 INFO [io.quarkus] (Quarkus Main Thread) Installed features: [agroal, cdi, hibernate-orm, hibernate-orm-panache, mutiny, narayana-jta, resteasy, resteasy-jackson, smallrye-context-propagation, spring-data-jpa, spring-di, spring-web]
非常重要的是輸出了當前已經安裝的功能
Installed features: [agroal, cdi, hibernate-orm, hibernate-orm-panache, mutiny, narayana-jta, resteasy, resteasy-jackson, smallrye-context-propagation, spring-data-jpa, spring-di, spring-web]
【擴充套件】 actuator 監控遷移
- 新增以下依賴
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-smallrye-health</artifactId>
</dependency>
- 指定訪問監控斷點路徑
quarkus.smallrye-health.root-path=/actuator/health
- 訪問監控檢查斷點測試
curl http://localhost:8080/actuator/health
{
"status": "UP",
"checks": [
{
"name": "Database connections health check",
"status": "UP"
}
]
}⏎
【擴充套件】Flyway 遷移
- 新增 quarkus flyway 外掛
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-flyway</artifactId>
</dependency>
- 指定外掛啟動策略即可
quarkus.flyway.migrate-at-start=true