Java无法访问网址出现Timeout但是浏览器和Postman可以

这种情况一般是本地windows pc设置了访问网址的代理，但是java程序没有使用代理。

如果java程序使用代理，就比如下面的代码，java就可以访问网址了。

import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
    new AuthScope("proxyHost", proxyPort),
    new UsernamePasswordCredentials("username", "password"));

CloseableHttpClient httpclient = HttpClients.custom()
    .setProxy(new HttpHost("proxyHost", proxyPort))
    .setDefaultCredentialsProvider(credsProvider)
    .build();