study-boot.txt

热部署在服务器运行时重新部署软件

热部署：
 重新加载整个应用
热加载
 运行时重新加载class
 
 使用场景
   热部署:生产环境
   热加载：开发环境
   
   
1 spring boot热部署方式
 1)Springloaded热部署实现
 	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<dependencies>
					<dependency>
						<groupId>org.springframework</groupId>
						<artifactId>springloaded</artifactId>
						<version>1.2.6.RELEASE</version>
					</dependency>
				</dependencies>
			</plugin>
		</plugins>
	</build>
	
    maven启动方式
 2) run as java application, 提前下载springloaded.jar
    虚拟机参数中加-javaagent:D:\workspace_spring\lib\springloaded-1.2.6.RELEASE.jar -noverify
   java -javaagent:D:\workspace_spring\lib\springloaded-1.2.6.RELEASE.jar -noverify  -jar myapp.jar
Spring dev tool热部署
	<dependencies>
  		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<optional>true</optional>
		</dependency>
	<dependencies>
	
2 发布方式
 1）构建jar ，命令行运行Srping Boot程序
2） 构建War包，发布到Tomcat 
  packaging改为war
  <packaging>war</packaging>
  
  增加tomcat依赖
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>  

 eclipse中maven->update project
 
 改造Application类
 
@SpringBootApplication
public class HelloDeploy1Application extends SpringBootServletInitializer {

	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
		return builder.sources(HelloDeploy1Application.class);
	}
}