将springboot打成war包

1. pom.xml
（1）修改依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
改为：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
    <optional>true</optional>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
（2）build位置增加
<build>
。。。。。。。
<finalName>AAA</finalName>
</build>
（3）改为war包
在（2）相同的pom.xml中：<packaging>war</packaging>

2.入口启动文件
改为：
@SpringBootApplication
@EnableAspectJAutoProxy
@EnableScheduling
@EnableCaching
public class WarStarterApplication extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(WarStarterApplication.class);
}

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

3. 增加web.xml
位置：入口启动文件所在模块，增加src->main->webapp->WEB-INF->web.xml
内容为空，如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
</web-app>