SpringBoot打成war包，部署到Tomcat服务器

前言

SpringBoot默认达成jar包，默认使用内置的Tomcat。但考虑到项目需要打成war包部署到外部的Tomcat服务器中。把SpringBoot项目按照平常的web项目一样发布到tomcat容器下。

1、修改pom.xml文件将默认的jar（默认创建项目的时候没有packaging）方式改为war。

    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example.mybaties</groupId>
    <artifactId>springbootmybaties</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springbootmybaties</name>
    <description>Demo project for Spring Boot</description>
    <!--默认为jar方式-->
    <!--<packaging>jar</packaging>-->
    <!--改为war方式-->
    <packaging>war</packaging>

2、排除内置的Tomcat容器

1）第一种方式

       <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <!--排除内置的Tomcat容器-->
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

2）第二种方式

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

3、继承org.springframework.boot.web.servlet.support.SpringBootServletInitializer，重写configure方法。

1）第一种方式，启动类继承SpringBootServletInitializer重写configure

package com.example.mybaties;

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;

@SpringBootApplication
public class SpringbootmybatiesApplication extends SpringBootServletInitializer {

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

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(SpringbootmybatiesApplication.class);
    }


}

2）新增加一个类继承SpringBootServletInitializer重写configure

package com.example.mybaties.config;

import com.example.mybaties.SpringbootmybatiesApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

/**
 * @author LST
 * @version 1.0
 * @Description:
 * @date 2020-1-17 16:19
 */
public class ServletInitializer extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        //此处的Application.class为带有@SpringBootApplication注解的启动类
        return builder.sources(SpringbootmybatiesApplication.class);
    }
}

4、为了防止应用上下文所导致的项目访问资源加载不到的问题，建议pom.xml文件中标签下添加标签

   <build>
        <!--上下文路径-->
        <finalName>mybaties</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

5、打成war包

先clean再打包：mvn clean package -Dmaven.test.skip=true，也可使用idea自带的打包

SpringBoot打成war包，部署到Tomcat服务器