springboot项目部署到tomcat启动失败404
感谢这位老兄:《Spring Boot项目部署到tomcat启动失败404》
我的springboot是2.7.0版本,需要部署到外部的tomcat版本是8.5,部署失败表象:
IDEA控制台只打印tomcat启动日志,没有springboot加载日志,访问localhost:8080/根路径/接口地址 报404
我查了springboot 2.7.0的内置tomcat的版本是9.0,所以一开始tomcat部署失败,我还以为是tomcat版本太低的原因。
后面经大师指点,修改以下3个地方,部署成功:
1)修改pom.xml,把打包形式从jar改成war
<properties>
<packaging>war</packaging>
<java.version>1.8</java.version>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
2)在pom中添加一条依赖,使用provided参数来达到在外部tomcat启动时屏蔽springboot自带的tomcat容器
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
3)修改启动类,继承SpringBootServletInitializer
public class SpringbootApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(SpringbootApplication.class, args);
}
//重写configure方法
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(SpringbootApplication.class);
}
}
end.
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