idea怎么使用外置tomcat配置springboot

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•  创建一个maven项目

• 导入springboot依赖，注意底下注释部分

<?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>     <groupId>com.znsd.springboot</groupId>     <artifactId>springboot-jsp</artifactId>     <version>1.0-SNAPSHOT</version>               <!-- 一定要声明war包 -->     <packaging>war</packaging>     <parent>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-parent</artifactId>         <version>2.3.12.RELEASE</version>         <relativePath/> <!-- lookup parent from repository -->     </parent>     <dependencies>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-web</artifactId>         </dependency>         <!-- 去除springboot默认tomcat依赖,让其在生成war包时无效， -->         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-tomcat</artifactId>             <!--在编译和测试有效，生成war包时无效-->             <scope>provided</scope>         </dependency>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-test</artifactId>             <scope>test</scope>             <exclusions>                 <exclusion>                     <groupId>org.junit.vintage</groupId>                     <artifactId>junit-vintage-engine</artifactId>                 </exclusion>             </exclusions>         </dependency>     </dependencies>     <build>         <plugins>             <plugin>                 <groupId>org.springframework.boot</groupId>                 <artifactId>spring-boot-maven-plugin</artifactId>             </plugin>         </plugins>     </build> </project>

完成下图操作保存即可

配置tomcat启动项

配置视图解析器

创建一个springboot主程序

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

必须编写一个SpringBootServletInitializer的子类，并调用configure方法里面的固定写法

public class ServletInitializer extends SpringBootServletInitializer {     @Override     protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {         //传入SpringBoot的主程序，         return application.sources(SpringBootMain.class);     } }

然后启动tomcat，控制台输出了spring就启动成功了

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