Quarkus 是一个目前十分火的 Java 利用开发框架，定位是轻量级的微服务框架。，Quarkus 提供了优良的容器化整合能力，相较于传统开发框架（Spring Boot）有着更快的启动速度、更小的内存耗费、更短的服务响应。
本文将演示将 SpringBoot 迁徙至 Quarkus
Spring Boot 示例程序
应用 JPA 实现 数据库的增删改查操作，根底代码如下
- maven 依赖
<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> {}迁徙至 Quarkus
- quarkus-bom 治理了全副 quarkus 插件 maven 依赖的版本信息，引入后所有依赖不须要再定义版本。
<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>- 迁徙 spring-web 、spring-jpa 至 quarkus 技术栈。
<dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-spring-data-jpa</artifactId></dependency><dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-spring-web</artifactId></dependency>- 配置文件调整 (还是在 application.yml)
quarkus.datasource.db-kind=mysqlquarkus.datasource.jdbc.driver=com.mysql.cj.jdbc.Driverquarkus.datasource.username=rootquarkus.datasource.password=rootquarkus.datasource.jdbc.url=jdbc:mysql://localhost:3306/pig_demo?useUnicode=true&characterEncoding=utf8&autoReconnect=true&rewriteBatchedStatements=TRUE- Main 办法调整为 实现
QuarkusApplication，且须要通过Quarkus.waitForExit()放弃服务运行。
@QuarkusMainpublic 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; }}启动运行
main 办法启动, 输入 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#userDao2021-01-12 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:80802021-01-12 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]十分重要的是输入了以后曾经装置的性能
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]【扩大】 actuator 监控迁徙
- 增加以下依赖
<dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-smallrye-health</artifactId></dependency>- 指定拜访监控断点门路
quarkus.smallrye-health.root-path=/actuator/health- 拜访监控查看断点测试
curl http://localhost:8080/actuator/health{ "status": "UP", "checks": [ { "name": "Database connections health check", "status": "UP" } ]}⏎【扩大】Flyway 迁徙
- 增加 quarkus flyway 插件
<dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-flyway</artifactId></dependency>- 指定插件启动策略即可
quarkus.flyway.migrate-at-start=true>>> 源码 https://gitee.com/log4j/pig，欢送署名转载 <<<