Access 404 after the war package is deployed to Tomcat

1. Does not inherit the SpringBootServletInitializer class,

Add a new class under the same level as the project startup class,

/**
 * web环境中部署
 */
public class XxlJObAdminServletInitializer extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(XxlJobAdminApplication.class);  //参数为启动类的类对象
    }
}

2. Pay attention to the project file hierarchy in the webapp folder