JAVA两种模式下的代理方法

java.net.HttpURLConnection：

// 设置http访问要使用的代理服务器的地址&端口
Properties prop = System.getProperties();
prop.setProperty("http.proxyHost", "proxy.cmcc");
prop.setProperty("http.proxyPort", "8080");

org.apache.http.client.HttpClient：

private HttpParams httpParams = new BasicHttpParams();

HttpHost proxy = new HttpHost("proxy.cmcc", 8080);  
httpParams.setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);  

httpClient = new DefaultHttpClient(httpParams);