SpringBoot項目部署到外部Tomcat中的方法

1. 特別說明

• 由於SpringBoot默認訪問無需項目名，所以打包成war的SpringBoot項目也需要部署成不需要輸入項目名的方式，否則資源無法訪問，后面會給部署示例

• 官方教程地址

pom.xml調整

1.1 打包方式修改

<packaging>jar</packaging>

變更為

<packaging>war</packaging>

1.2. 添加依賴

重點：scope是provided

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

1.3. 排除嵌入式tomcat

不排除也沒影響，多個jar而已

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

1.4. 注釋spring-boot-maven-plugin，使用maven-war-plugin

<!-- 
<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <mainClass>bing.AuthorityApplication</mainClass>
        <layout>ZIP</layout>
    </configuration>
    <executions>
        <execution>
            <goals>
                <goal>repackage</goal>
            </goals>
        </execution>
    </executions>
</plugin> -->

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>
    <configuration>
        <failOnMissingWebXml>false</failOnMissingWebXml>
    </configuration>
</plugin>

2. 啟動類修改

繼承SpringBootServletInitializer覆蓋configure方法，示例：

public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(Application.class);
    }
	
    public static void main(String[] args) {
        new SpringApplicationBuilder(Application.class).web(true).run(args);
    }
}

3. 省略項目名部署方法

修改TOMCAT的server.xml，demo是項目文件夾

<Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true">
    ...
    
    <Context path="" docBase="D:/opt/demo" debug="0" reloadable="true"/>
    
    ...
</Host>