添加spring-boot-devtools 热部署依赖启动器
<!-- 热部署依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency>
配置如下
<!-- 热部署依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <!-- 这个需要为 true 热部署才有效 --> </dependency>
<plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin>
我的pom.xml（供各位读者参考上面两段代码放的位置）
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.6.4</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>cc.mllt</groupId> <artifactId>demo01</artifactId> <version>0.0.1-SNAPSHOT</version> <name>Edu02_CreateMySpringBootProject</name> <description>Edu02_CreateMySpringBootProject</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- 热部署依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <!-- 这个需要为 true 热部署才有效 --> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> </plugins> </build> </project>
IDEA工具热部署设置
打开设置（file>settiings）
双击shitf键，打开下面窗口，输入Maintenance
勾选compiler.automake.allow.when.app.running
注意，新版本的这个设置不在这里，新版本的操作如下所示
测试热部署
1.运行项目
2.直接修改HelloController类中返回的字符串，保存，当控制台出现反应的时候，说明自动部署了，此时刷新网页
我最开先修改，保存，刷新，没变化以为没成功，后来发现是热部署他只是反应比较慢……
等等再刷新（等控制台出现变化）在刷新就可以了
