https://axerzone.cn/tags/spring-boot/Recent content in Spring Boot on Weiming's BlogHugo -- gohugo.iozh-cn© 2026 WeimingTue, 05 Sep 2023 00:00:00 +0000https://axerzone.cn/posts/springboot-auto-config/Tue, 05 Sep 2023 00:00:00 +0000https://axerzone.cn/posts/springboot-auto-config/<h1 class="relative group">Spring Boot 自动配置，看完你就不慌了 <div id="spring-boot-自动配置看完你就不慌了" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#spring-boot-%e8%87%aa%e5%8a%a8%e9%85%8d%e7%bd%ae%e7%9c%8b%e5%ae%8c%e4%bd%a0%e5%b0%b1%e4%b8%8d%e6%85%8c%e4%ba%86" aria-label="锚点">#</a> </span> </h1> <p>用 Spring Boot 写项目的时候，你有没有想过：我就加了个 <code>spring-boot-starter-web</code> 依赖，Tomcat 怎么就自己跑起来了？数据源我就配了个 URL，连接池怎么就自动用上 HikariCP 了？</p> <p>这背后全是自动配置在搞事情。</p> <h2 class="relative group">@SpringBootApplication 背后藏了什么 <div id="springbootapplication-背后藏了什么" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#springbootapplication-%e8%83%8c%e5%90%8e%e8%97%8f%e4%ba%86%e4%bb%80%e4%b9%88" aria-label="锚点">#</a> </span> </h2> <p>启动类上那个 <code>@SpringBootApplication</code>，其实是个组合注解：</p>