Knife4j是一个集Swagger2 和 OpenAPI3为一体的增强解决方案，官网地址：Knife4j · 集Swagger2及OpenAPI3为一体的增强解决方案. | Knife4j

考虑到安全性问题，在实际服务部署到生产环境后就需要禁用到swagger页面的展示，这个时候只需要进行如下配置即可实现该功能：

knife4j:production: true

 是的，通过设置knife4j.production为true就意味着在生产环境下，这个时候就无法打开swagger对应页面，当你输入http://localhost:8081/doc.html页面会返回如下错误信息：

 下面简单看下knife4j是如何实现该功能的，找到Knife4jAutoConfiguration这个类，看如下的Bean创建即可

    // knife4j.productio为true时创建ProductionSecurityFilter对象@Bean@ConditionalOnMissingBean(ProductionSecurityFilter.class)@ConditionalOnProperty(name = "knife4j.production", havingValue = "true")public ProductionSecurityFilter productionSecurityFilter(Knife4jProperties knife4jProperties) {boolean prod = false;ProductionSecurityFilter p = null;if (knife4jProperties == null) {if (environment != null) {String prodStr = environment.getProperty("knife4j.production");if (logger.isDebugEnabled()) {logger.debug("swagger.production:{}", prodStr);}prod = Boolean.valueOf(prodStr);}p = new ProductionSecurityFilter(prod);} else {p = new ProductionSecurityFilter(knife4jProperties.isProduction());}return p;}

ProductionSecurityFilter类如其名，该类是一个Filter实现类，所以看下这个类的doFilter方法实现

    @Overridepublic void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {HttpServletRequest httpServletRequest = (HttpServletRequest) request;if (production) {String uri = httpServletRequest.getRequestURI();// 判断uri是否是要被拦截的地址，被拦截地址有如下几个：// /*public BasicFilter() {urlFilters = new ArrayList<>();urlFilters.add(Pattern.compile(".*?/doc\\.html.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/v2/api-docs.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/v2/api-docs-ext.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/swagger-resources.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/swagger-resources/configuration/ui.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/swagger-resources/configuration/security.*", Pattern.CASE_INSENSITIVE));// https://gitee.com/xiaoym/knife4j/issues/I6H8BEurlFilters.add(Pattern.compile(".*?/swagger-ui.*", Pattern.CASE_INSENSITIVE));urlFilters.add(Pattern.compile(".*?/v3/api-docs.*", Pattern.CASE_INSENSITIVE));}*/if (!match(uri)) {chain.doFilter(request, response);} else {response.setContentType("text/palin;charset=UTF-8");PrintWriter pw = response.getWriter();// 下面信息就是页面展示的无权访问信息pw.write("You do not have permission to access this page");pw.flush();}} else {chain.doFilter(request, response);}}