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手动热部署
热部署是指在不停止应用程序的情况下更新应用程序的功能。这样可以避免短暂的服务中断，并且可以更快地部署新的功能和修复问题。热部署通常适用于Web应用程序和服务器端应用程序。
在pom.xml中添加依赖：
<dependency> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId> <optional>true</optional>
</dependency>
激活热部署：Ctrl+F9
自动热部署
点击文件，点击设置
点击自动构建项目并应用：
勾选。
自定义不参与重启排除项
在yml文件里设置：
devtools: restart: exclude: 目录/目录 /目录
热部署只在开发环境有效。
关闭热部署
设置高优先级禁用热部署：
public static void main(String[] args) {
System.setProperty("spring.devtools.restart.enabled","false");
SpringApplication.run(SSMPApplication.class, args); }
其他
在 IntelliJ IDEA 中设置热部署可以在运行应用程序时自动重新加载代码更改。要设置热部署，请执行以下步骤：
*
打开 IntelliJ IDEA，打开需要热部署的项目。
*
打开 "Run" 面板，点击 "Edit Configurations" 按钮。
*
在 "Run/Debug Configurations" 窗口中，找到你的应用程序的配置，并单击 "Reload classes after
compilation" 选项。
*
点击 "Apply" 按钮，然后点击 "OK" 按钮关闭窗口。
*
在 Run 面板中运行应用程序, 现在修改的代码将会自动重新加载。
如果你使用的是Spring boot, 可以在application.properties中加入：
spring.devtools.livereload.enabled=true
