如何使用Spring 5 WebClient支持HTTP代理？

Question

我正在使用Spring 5 WebClient。我想知道是否可以将其配置为使用HTTP代理，或者是否有方法更改其默认配置以使用HTTP代理。

Answer 1

在这里分享最近的经验

步骤1：定义代理环境变量

-Dhttp.proxyHost=<proxyHost>
-Dhttp.proxyPort=8080
-Dhttps.proxyHost=<proxyHost>
-Dhttps.proxyPort=8080
-Dhttps.nonProxyHosts=localhost

在webClient上配置代理

@Configuration
public class WebClientConfiguration {    
 @Bean
 public WebClient webClient() {
     return WebClient.builder() //
             .defaultHeader(ACCEPT, APPLICATION_JSON_VALUE) //
             .clientConnector(new ReactorClientHttpConnector(httpClient())) //
             .build();
 }

 private HttpClient httpClient() {
     return HttpClient //
             .create() //
             .proxyWithSystemProperties();
 }

}

设置Spring云代理属性（在应用程序启动中）

static {
   String nonProxyHosts = System.getProperty("http.nonProxyHosts");
   if (nonProxyHosts != null) {
     String regexProxyList = nonProxyHosts.replaceAll("\\.", "\\\\.").replaceAll("\\/", "\\\\/").replaceAll("\\*", ".\\*");
     System.setProperty("spring.cloud.gateway.httpclient.proxy.non-proxy-hosts-pattern", regexProxyList);
 }
 String proxyHost = System.getProperty("https.proxyHost");
 String proxyPort = System.getProperty("https.proxyPort");
 if (proxyHost != null && proxyPort != null) {
     System.setProperty("spring.cloud.gateway.httpclient.proxy.host", proxyHost);
     System.setProperty("spring.cloud.gateway.httpclient.proxy.port", proxyPort);
 }
}

Answer 2

“tcpConfiguration”已弃用。所以改用这部分代码。

  HttpClient httpClient =
            HttpClient.create()
                    .proxy(proxy -> proxy.type(ProxyProvider.Proxy.HTTP)
                            .host(sasConfig.getProxyHost())
                            .port(Integer.parseInt(sasConfig.getProxyPort())));

    ReactorClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);

    WebClient webClient =  WebClient.builder().clientConnector(connector).build();

Answer 3

这是底层客户端库应该支持的东西。

使用ReactorNetty时，您可以执行以下操作：

HttpClient httpClient = HttpClient.create()
            .tcpConfiguration(tcpClient ->
                    tcpClient.proxy(proxy -> proxy.type(ProxyProvider.Proxy.HTTP).host("myproxyhost")));
ReactorClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);
WebClient client = WebClient.builder().clientConnector(connector).build();