AppConfig

 

@Configuration
@EnableConfigurationProperties(AppProperties.class)
public class AppConfig {@Value("${spring.mvc.servlet.path}")private String mvcServletPath;@Bean@ConditionalOnProperty(prefix = "app", name = "root-enabled", havingValue = "true", matchIfMissing = true)public ServletRegistrationBean rootServletRegistrationBean(AppProperties appProperties){String[] baseUrlMappings;String[] urlMappings;if(!"/".equals(Paths.get(mvcServletPath).getParent())){baseUrlMappings = new String[]{Paths.get(mvcServletPath).getParent() + "/", "/"};urlMappings = new String[]{Paths.get(mvcServletPath) + "/", "/"};} else {baseUrlMappings = new String[]{"/"};urlMappings = new String[]{"/"};}ServletRegistrationBean<RootServlet> bean = new ServletRegistrationBean<>(new RootServlet(appProperties, urlMappings),  baseUrlMappings);// 保险起见，把顺序放到最低，确保所有精确匹配先选
        bean.setOrder(Ordered.LOWEST_PRECEDENCE);return bean;}@Bean@ConditionalOnProperty(prefix = "app", name = "describe-enabled", havingValue = "true", matchIfMissing = true)public ServletRegistrationBean describeServletRegistrationBean(){return new ServletRegistrationBean<>(new DescribeServlet(), "/describe");}
}