1：build.gradle

plugins {    id 'org.springframework.boot' version '2.1.5.RELEASE'    id 'java'}apply plugin: 'io.spring.dependency-management'group = 'com.example'version = '0.0.1-SNAPSHOT'sourceCompatibility = '1.8'apply plugin: 'war'repositories {    mavenCentral()}dependencies {    implementation 'org.springframework.boot:spring-boot-starter-web'    testImplementation 'org.springframework.boot:spring-boot-starter-test'    compile group: 'com.google.code.gson', name: 'gson', version: '2.8.2'    providedRuntime('org.springframework.boot:spring-boot-starter-tomcat')}

增加：

apply plugin: 'war'

providedRuntime('org.springframework.boot:spring-boot-starter-tomcat')

2：application.properties中增加

spring.jmx.enabled=false

3：入口程序继承SpringBootServletInitializer，覆写configure方法

package com.example.demo;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;@SpringBootApplicationpublic class DemoApplication extends SpringBootServletInitializer {    @Override    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {        return application.sources(DemoApplication.class);    }    public static void main(String[] args) {        SpringApplication.run(DemoApplication.class, args);    }}