驻马店网站开发,php是前端还是后端,网页服务器价格,开发公司电梯前室只给一楼吊顶由于子项目比较多#xff0c;子项目都是通过嵌套的方式实现的。就会导致子页面加载比较慢#xff0c;影响客户体验
实现思路#xff08;AI搜的--!#xff09;:
1、通过spring boot缓存实现静态资源缓存
2、在gateway过滤器#xff0c;对静态资源进行缓存
直接上代码子项目都是通过嵌套的方式实现的。就会导致子页面加载比较慢影响客户体验
实现思路AI搜的--!:
1、通过spring boot缓存实现静态资源缓存
2、在gateway过滤器对静态资源进行缓存
直接上代码
dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-cache/artifactId
/dependency
package com.xxx.filter;import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.support.SimpleValueWrapper;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** author Wang* 创建时间: 2023/11/15 10:19* 功能描述静态资源缓存*/
Slf4j
Component
public class StaticResourceFilter implements GlobalFilter, Ordered {private static final String STATIC_RESOURCE_PATTERN \\.(html|css|js|png|jpg|jpeg|gif|woff2|woff)$;private final WebClient webClient;private final CacheManager cacheManager;ListString synchronizedList Collections.synchronizedList(new ArrayList());public StaticResourceFilter(WebClient webClient, CacheManager cacheManager) {this.webClient webClient;this.cacheManager cacheManager;}Overridepublic MonoVoid filter(ServerWebExchange exchange, GatewayFilterChain chain) {ServerHttpRequest request exchange.getRequest();URI uriInfo request.getURI();String staticResourcePath getUrl(uriInfo);if (isStaticResource(staticResourcePath) !synchronizedList.contains(staticResourcePath)) {//Route route exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);String cacheKey request.getURI().toString();Cache cache cacheManager.getCache(staticResources);// 尝试从缓存中获取静态资源Object cachedResource cache.get(cacheKey);if (cachedResource ! null) {if (cachedResource instanceof SimpleValueWrapper) {cachedResource ((SimpleValueWrapper) cachedResource).get();}// 如果缓存中存在直接返回缓存的资源ServerHttpResponse response exchange.getResponse();HttpHeaders headers response.getHeaders();String fileSuffix staticResourcePath.replaceAll(.*(\\.[a-zA-Z0-9])$, $1);// 根据文件后缀设置MIME类型switch (fileSuffix) {case .html:headers.setContentType(MediaType.TEXT_HTML);break;case .js:headers.set(HttpHeaders.CONTENT_TYPE, application/javascript);break;case .css:headers.set(HttpHeaders.CONTENT_TYPE, text/css);break;case .png:headers.setContentType(MediaType.IMAGE_PNG);break;case .jpg:case .jpeg:headers.setContentType(MediaType.IMAGE_JPEG);break;case .woff:headers.set(HttpHeaders.CONTENT_TYPE, application/font-woff);break;case .woff2:headers.set(HttpHeaders.CONTENT_TYPE, application/font-woff2);break;case .ttf:headers.set(HttpHeaders.CONTENT_TYPE, application/x-font-ttf);break;case .eot:headers.set(HttpHeaders.CONTENT_TYPE, application/vnd.ms-fontobject);break;default:headers.setContentType(MediaType.ALL);break;}// 这里假设缓存的内容是字节数组您可以根据实际情况进行调整DataBuffer dataBuffer response.bufferFactory().wrap((byte[]) cachedResource);return response.writeWith(Mono.just(dataBuffer));}// 如果缓存不存在则继续请求下游服务获取资源并将其缓存起来return chain.filter(exchange).then(Mono.fromRunnable(() - {getResourceFromDownstream(staticResourcePath, cacheKey, cache);}));}// 继续处理其他过滤器或请求return chain.filter(exchange);}Overridepublic int getOrder() {return Ordered.HIGHEST_PRECEDENCE;}/*** 根据请求路径判断是否为静态资源请求** param staticResourcePath 请求路径*/private boolean isStaticResource(String staticResourcePath) {Pattern pattern Pattern.compile(STATIC_RESOURCE_PATTERN);Matcher matcher pattern.matcher(staticResourcePath);return matcher.find();}/*** 请求下游服务静态资源的方法这里只是一个示例您需要根据实际情况实现此方法** param cache 缓存* param staticResourcePath URL* param cacheKey 缓存Key*/private void getResourceFromDownstream(String staticResourcePath, String cacheKey, Cache cache) {synchronizedList.add(staticResourcePath);Monobyte[] mono webClient.get().uri(staticResourcePath).retrieve().bodyToMono(byte[].class);// 处理响应数据mono.subscribe(res - {synchronizedList.remove(staticResourcePath);cache.put(cacheKey, res);}, error - {log.error(请求下游服务静态资源失败{}\n错误详情:{}, staticResourcePath, error.toString());});}/*** 获取静态资源地址** param uri uri* return 静态资源地址*/private String getUrl(URI uri) {String path uri.getPath();String host uri.getHost();int port uri.getPort();// 下游服务的地址是String downstreamUrl String.format(http://%s:%s%s, host, port, path);return downstreamUrl;}
}
