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start.spring.io: 通过该网址生成项目 actuator: /actuator/health(检查服务状态地址) mvn clean package -Dmaven.test.skip (打包程序部署) ll 命令查看目录详情

parents 模式：

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.2.6.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

改为非 parents 模式:

<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-dependencies</artifactId>
				<version>2.2.6.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
</dependencyManagement>

mvn plugin 增加 repackage

<build>
	<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<executions>
					<execution>
						<goals>
							<goal>repackage</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
		</plugins>
</build>

执行 jar 包：

 java -jar start-0.0.1-SNAPSHOT.jar

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暴露 actuator 断点配置

management.endpoints.web.exposure.include=<comma separated endpoints you wish to expose>

常用的 actuator 路径

/health, /env, /metrics, /beans

通过环境变量控制，使用的配置文件

spring.profiles.active=${SPRING_PROFILES_ACTIVE:simple-jdbc}

datasource 的配置可以自定义配置

spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.schema=classpath:${SPRING_PROFILES_ACTIVE}-schema.sql
spring.datasource.data=classpath:${SPRING_PROFILES_ACTIVE}-data.sql
spring.datasource.hikari.maximumPoolSize=5
spring.datasource.hikari.minimumIdle=5
spring.datasource.hikari.idleTimeout=600000
spring.datasource.hikari.connectionTimeout=30000
spring.datasource.hikari.maxLifetime=1800000

默认链接池为：hikari

排除调某些 bean 的注入：

@SpringBootApplication(exclude = { *.class, ...}

druid 配置参考：

https://github.com/alibaba/druid/wiki/DruidDataSource%E9%85%8D%E7%BD%AE

配置 druid 为连接持，需要先排除掉默认的 hikari：

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
            <exclusions>
                <exclusion>
                    <artifactId>HikariCP</artifactId>
                    <groupId>com.zaxxer</groupId>
                </exclusion>
            </exclusions>
</dependency>

malongge/spring-start

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