Spring Boot2如何构建可部署的war包

2019-11-26 08:19:35

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默认情况下Spring Boot使用了内嵌的Tomcat服务器，项目最终被打成jar包运行，每个jar包可以被看作一个独立的Web服务器。

传统的Web开发，一般会将Web应用打成一个war包，然后将其部署到Web服务器中运行。

Spring Boot也支持传统的部署模式。

开发环境：IntelliJ IDEA 2019.2.2

Spring Boot版本：2.1.8

1、新建一个名称为demo的Spring Boot项目。

2、修改pom.xml文件

下面粗体部分为所加代码，注释掉原来的build节点，该项目最终会打包成一个war-demo的war包。

<?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>2.1.8.RELEASE</version>    <relativePath/> <!-- lookup parent from repository -->  </parent>  <groupId>com.example</groupId>  <artifactId>demo</artifactId>  <version>0.0.1-SNAPSHOT</version>  <name>demo</name>  <description>Demo project for Spring Boot</description>  <packaging>war</packaging>  <build>    <finalName>war-demo</finalName>  </build>  <properties>    <java.version>1.8</java.version>  </properties>  <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>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-test</artifactId>      <scope>test</scope>    </dependency>  </dependencies>  <!-- <build>    <plugins>      <plugin>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-maven-plugin</artifactId>      </plugin>    </plugins>  </build>--></project>

3、修改启动类方法 DemoApplication.java

继承SpringBootServletInitializer，重写父类configure方法。增加测试用的控制器。

package com.example.demo;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@SpringBootApplication@RestControllerpublic class DemoApplication extends SpringBootServletInitializer {  protected SpringApplicationBuilder configure(SpringApplicationBuilder application){    return application.sources(DemoApplication.class);  }  public static void main(String[] args) {    SpringApplication.run(DemoApplication.class, args);  }  @RequestMapping("/")  public String test(){    return "test";  }}

4、先后点击IDEA的Maven窗口的clean和package