springboot 項目war包部署

修改pom.xml 打包方式

<packaging>war</packaging>

去除springboot 內嵌的tomcat模塊

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <!-- 移除嵌入式tomcat插件 -->
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>

添加provided 屬性的servlet-api 依賴 或者tomcat 依賴

<!--添加servlet-api的依賴-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
</dependency>
<!-- 或者添加tomcat 依賴 -->
<dependency>
   	<groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

修改啓動類

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

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

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }
}

如果編譯報錯：webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode)

方法1:
<build>
  <plugins>
    <plugin>
      <artifactId>maven-war-plugin</artifactId>
      <version>2.6</version>
      <configuration>
        <!--如果想在沒有web.xml文件的情況下構建WAR，請設置爲false。-->      
        <failOnMissingWebXml>false</failOnMissingWebXml>                        
      </configuration>
    </plugin>
  </plugins>
</build>
方法2:
<build>
  <plugins>
    <plugin>
      <!-- 版本3.0.0的插件 web.xml不存在問題，所以可以通過升級插件來解決問題 -->
      <artifactId>maven-war-plugin</artifactId>
      <version>3.0.0</version>
    </plugin>
  </plugins>
</build>