修改build.gradle文件

加入如下配置

springBoot {
    buildInfo()
}

在Controller中获得版本号即可

@Controller
public class IndexController {
    @Autowired
    private BuildProperties buildProperties;

    @RequestMapping({"/"})
    public ModelAndView index() {
        return new ModelAndView("index")
                .addObject("version", buildProperties.getVersion());
    }
}