spring-boot-demo/demo-war/README.md

# spring-boot-demo-war

> 本 demo 主要演示了如何将 Spring Boot 项目打包成传统的 war 包程序。

## pom.xml

```xml
<?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>

    <artifactId>spring-boot-demo-war</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <!-- 若需要打成 war 包，则需要将打包方式改成 war -->
    <packaging>war</packaging>

    <name>spring-boot-demo-war</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.xkcoding</groupId>
        <artifactId>spring-boot-demo</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- 若需要打成 war 包，则需要将 tomcat 引入，scope 设置为 provided -->
        <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>
        <finalName>spring-boot-demo-war</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
```

## SpringBootDemoWarApplication.java

```java
/**
 * <p>
 * 启动器
 * </p>
 *
 * @author yangkai.shen
 * @date Created in 2018-10-30 19:37
 */
@SpringBootApplication
public class SpringBootDemoWarApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootDemoWarApplication.class, args);
    }

    /**
     * 若需要打成 war 包，则需要写一个类继承 {@link SpringBootServletInitializer} 并重写 {@link SpringBootServletInitializer#configure(SpringApplicationBuilder)}
     */
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(SpringBootDemoWarApplication.class);
    }
}
```

## 参考

https://docs.spring.io/spring-boot/docs/2.1.0.RELEASE/reference/htmlsingle/#howto-create-a-deployable-war-file