war包部署到Tomcat后访问404

1. 未继承SpringBootServletInitializer类,

在项目启动类同级下新增类,

/**
 * 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. 注意webapp文件夹中项目文件层级关系