SpringBoot項目打包部署外部JavaEE容器__Java

前言

springBoot項目開發過程中使用的是內嵌的tomcat，jetty容器，當項目需要發布的時候怎麼呢。
只需要兩步 步驟 修改啟動類，繼承 SpringBootServletInitializer 並重寫 configure 方法

/** * Author: 遇見小星 * Email: tengxing7452@163.com * Date: 17-5-10 * Time: 上午10:40 * Describe: 程式入口 */@SpringBootApplication@EnableAutoConfigurationpublic class Mainspringboot extends SpringBootServletInitializer {@Override    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {        return application.sources(Mainspringboot.class);    }

修改pom.xml檔案

<!-- <packaging>jar</packaging> -->  <packaging>war</packaging>  

tomcat外掛程式依賴包添加生命週期privided

 <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-tomcat</artifactId>      <scope>provided</scope>    </dependency>    <dependency>      <groupId>org.apache.tomcat.embed</groupId>      <artifactId>tomcat-embed-jasper</artifactId>      <scope>provided</scope>    </dependency>

結束語

SpringBootServletInitializer類implements WebApplicationInitializer介面，而WebApplicationInitializer裡有void onStartup(ServletContext var1) 方法

void onStartup(ServletContext var1) throws ServletException;

SpringBootServletInitializer 實現了這個onStartup方法，主要在啟動容器時負責載入相關配置

public void onStartup(ServletContext servletContext) throws ServletException {        this.logger = LogFactory.getLog(this.getClass());        final WebApplicationContext rootAppContext = this.createRootApplicationContext(servletContext);        if(rootAppContext != null) {            servletContext.addListener(new ContextLoaderListener(rootAppContext) {                public void contextInitialized(ServletContextEvent event) {                }            });        } else {            this.logger.debug("No ContextLoaderListener registered, as createRootApplicationContext() did not return an application context");        }    }

代碼

            servletContext.addListener(new ContextLoaderListener(rootAppContext) {                public void contextInitialized(ServletContextEvent event) {                }            });

中ContextLoaderListener實現了ServletContextListener介面，這樣就可以通過addListener()的方式將springboot項目下的相關配置進行載入。