SpringBoot打包war发布到外部的Tomcat容器后无法启动

SpringBoot打包war发布到外部的Tomcat容器后无法启动

tomcat启动成功，访问8080可以看到大猫，但是不启动springboot项目

原因是springboot在外部的容器启动（如tomcat）时启动类需要继承

SpringBootServletInitializer并重写configure方法

第一步：

package com.skxx.vrxmty;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
@Controller
public class VrxmtyApplication extends SpringBootServletInitializer {

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

    //打成war包需要继承SpringBootServletInitializer并重写configure方法
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(VrxmtyApplication.class);
    }
    /**
     * mvn打包后，如果运行容器容器不是tomcat（如果是tomcat则不用配，默认是tomcat），需要配置这里返回对应的EmbeddedServletContainerFactory
     * 比如使用jetty容器应该用下面的配置
     * @return
     */
	/*@Bean
	public EmbeddedServletContainerFactory servletContainer() {
		JettyEmbeddedServletContainerFactory factory = new JettyEmbeddedServletContainerFactory();
		return factory;
	}*/

    @RequestMapping(value={"","/index"})
    public String index(){
        System.out.println("进入主页");
        return "index";
    }

}

第二步;注意你的pom文件的打包方式和去除默认的tomcat

<?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>2.2.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.skxx</groupId>
    <artifactId>vrxmty</artifactId>
    <packaging>war</packaging><!--外部启动tomcat时要以war方式打包-->
    <version>0.0.1-SNAPSHOT</version>
    <name>vrxmty</name>
    <description>SkxxTyVr project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!-- provided 表明该包只在编译和测试的时候使用，去除默认的tomcat -->
        <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-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

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


        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>8.5.43</version>
            <scope>provided</scope>
        </dependency>
        <!--<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</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.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <fork>true</fork>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>