SpringBoot基礎-如何讓springboot自動重啟
阿新 • • 發佈:2019-01-26
- 必須重啟
目前的Springboot,當發生了任何修改之後,必須關閉後再啟動Application類才能夠生效,顯得略微麻煩。 Springboot提供了熱部署的方式,當發現任何類發生了改變,馬上通過JVM類載入的方式,載入最新的類到虛擬機器中。 這樣就不需要重新啟動也能看到修改後的效果了 - pom.xml
做法很簡單,在pom.xml中新增加一個依賴就行了
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <!-- 這個需要為 true 熱部署才有效 --> </dependency>
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.how2java</groupId> <artifactId>springboot</artifactId> <version>0.0.1-SNAPSHOT</version> <name>springboot</name> <description>springboot</description> <packaging>war</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.9.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- servlet依賴. --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- tomcat的支援.--> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <!-- 這個需要為 true 熱部署才有效 --> </dependency> </dependencies> <properties> <java.version>1.8</java.version> </properties> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
- 重啟測試
重新啟動Application,然後隨便修改一下HelloController, 就會如圖所示觀察到控制檯的自動重啟現象