非标准端口(非80/443)上的HTTP/HTTPS连接必须通过AEMas a Cloud Service进行代理,但它们不需要任何特殊的 portForwards
规则,并可使用AEM的 AEM_PROXY_HOST
和保留的代理端口 AEM_HTTP_PROXY_PORT
或 AEM_HTTPS_PROXY_PORT
目标为HTTP/HTTPS,具体取决于是。
以下高级联网选项支持以下代码示例。
确保 适当的 在执行本教程之前,已设置高级联网配置。
无高级联网 | 灵活端口出口 | 专用出口IP地址 | 虚拟专用网络 |
---|---|---|---|
✘ | ✔ | ✘ | ✘ |
此代码示例仅用于 灵活端口出口. 有一个相似但不同的代码示例可用于 专用出口IP地址和VPN的非标准端口上的HTTP/HTTPS连接.
此Java™代码示例是一个可在AEMas a Cloud Service中运行的OSGi服务,该服务通过HTTP连接到8080上的外部Web服务器。 与HTTPS Web服务器的连接使用环境变量 AEM_PROXY_HOST
和 AEM_HTTPS_PROXY_PORT
(默认为 proxy.tunnel:3128
(在AEM版本6094之前)。
建议使用 Java™ 11 HTTP API 用于从AEM进行HTTP/HTTPS调用。
core/src/com/adobe/aem/wknd/examples/connections/impl/HttpExternalServiceImpl.java
package com.adobe.aem.wknd.examples.core.connections.impl;
import com.adobe.aem.wknd.examples.core.connections.ExternalService;
import org.osgi.service.component.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ProxySelector;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;
@Component
public class HttpExternalServiceImpl implements ExternalService {
private static final Logger log = LoggerFactory.getLogger(HttpExternalServiceImpl.class);
@Override
public boolean isAccessible() {
HttpClient client;
// Use System.getenv("AEM_PROXY_HOST") and proxy port System.getenv("AEM_HTTP_PROXY_PORT")
// or System.getenv("AEM_HTTPS_PROXY_PORT"), depending on if the destination requires HTTP/HTTPS
if (System.getenv("AEM_PROXY_HOST") != null) {
// Create a ProxySelector that uses to AEM's provided AEM_PROXY_HOST, with a fallback of proxy.tunnel, and proxy port using the AEM_HTTP_PROXY_PORT variable.
// If the destination requires HTTPS, then use the variable AEM_HTTPS_PROXY_PORT instead of AEM_HTTP_PROXY_PORT.
ProxySelector proxySelector = ProxySelector.of(new InetSocketAddress(
System.getenv().getOrDefault("AEM_PROXY_HOST", "proxy.tunnel"),
Integer.parseInt(System.getenv().get("AEM_HTTP_PROXY_PORT"))));
client = HttpClient.newBuilder().proxy(proxySelector).build();
log.debug("Using HTTPClient with AEM_PROXY_HOST");
} else {
client = HttpClient.newBuilder().build();
// If no proxy is set up (such as local dev)
log.debug("Using HTTPClient without AEM_PROXY_HOST");
}
// Prepare the full URI to request, note this will have the
// - Scheme (http/https)
// - External host name
// - External port
// The external service URI, including the scheme/host/port, is defined in code, and NOT in Cloud Manager portForwards rules.
URI uri = URI.create("http://api.example.com:8080/test.json");
// Prepare the HttpRequest
HttpRequest request = HttpRequest.newBuilder().uri(uri).timeout(Duration.ofSeconds(2)).build();
// Send the HttpRequest using the configured HttpClient
HttpResponse<String> response = null;
try {
// Request the URL
response = client.send(request, HttpResponse.BodyHandlers.ofString());
log.debug("HTTP response body: {} ", response.body());
// Our simple example returns true is response is successful! (200 status code)
return response.statusCode() == 200;
} catch (IOException e) {
return false;
} catch (InterruptedException e) {
return false;
}
}
}