似乎当我使用以下方法构造新的HttpClient时,可以指定代理:

HttpHost proxy = new HttpHost("someproxy", 8080);
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
CloseableHttpClient httpclient = HttpClients.custom()
    .setRoutePlanner(routePlanner)
    .build();

取自http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html#d5e475

是否可以修改现有客户端的代理设置。

最佳答案

您可以创建自己的HttpRoutePlanner实现,该实现将允许更改HttpHost。

public class DynamicProxyRoutePlanner implements HttpRoutePlanner {

    private DefaultProxyRoutePlanner defaultProxyRoutePlanner = null;

    public DynamicProxyRoutePlanner(HttpHost host){
        defaultProxyRoutePlanner = new DefaultProxyRoutePlanner(host);
    }

    public void setProxy(HttpHost host){
        defaultProxyRoutePlanner = new DefaultProxyRoutePlanner(host);
    }

    public HttpRoute determineRoute(HttpHost target, HttpRequest request, HttpContext context) {
        return defaultProxyRoutePlanner.determineRoute(target,request,context);
    }
}

然后,您可以在代码中使用此DynamicProxyRoutePlanner
HttpHost proxy = new HttpHost("someproxy", 8080);
DynamicProxyRoutePlanner routePlanner = new DynamicProxyRoutePlanner(proxy);
CloseableHttpClient httpclient = HttpClients.custom()
    .setRoutePlanner(routePlanner)
    .build();

//Any time change the proxy
routePlanner.setProxy(new HttpHost("someNewProxy", 9090));

关于java - Apache HttpClient 4.3.5设置代理,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/25567973/

10-12 14:42
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