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- import java.io.IOException;
- import java.io.InputStream;
- import java.net.InetSocketAddress;
- import java.net.MalformedURLException;
- import java.net.Proxy;
- import java.net.ProxySelector;
- import java.net.SocketAddress;
- import java.net.URI;
- import java.net.URISyntaxException;
- import java.net.URL;
- import java.net.URLConnection;
- import java.util.List;
- import java.util.Properties;
-
- public class NetProxy
- {
- // 测试本地JVM的网络缺省配置
- public void setLocalProxy()
- {
- Properties prop = System.getProperties();
- //设置http访问要使用的代理服务器的地址
- prop.setProperty("http.proxyHost", "10.10.0.96");
- //设置http访问要使用的代理服务器的端口
- prop.setProperty("http.proxyPort", "8080");
- //设置不需要通过代理服务器访问的主机,可以使用*通配符,多个地址用|分隔
- prop.setProperty("http.nonProxyHosts", "localhost|10.10.*");
-
- //设置安全访问使用的代理服务器地址与端口
- //它没有https.nonProxyHosts属性,它按照http.nonProxyHosts 中设置的规则访问
- prop.setProperty("https.proxyHost", "10.10.0.96");
- prop.setProperty("https.proxyPort", "443");
-
- //使用ftp代理服务器的主机、端口以及不需要使用ftp代理服务器的主机
- prop.setProperty("ftp.proxyHost", "10.10.0.96");
- prop.setProperty("ftp.proxyPort", "2121");
- prop.setProperty("ftp.nonProxyHosts", "localhost|10.10.*");
-
- //socks代理服务器的地址与端口
- prop.setProperty("socksProxyHost", "10.10.0.96");
- prop.setProperty("socksProxyPort", "1080");
- }
-
- // 清除proxy设置
- public void removeLocalProxy()
- {
- Properties prop = System.getProperties();
- prop.remove("http.proxyHost");
- prop.remove("http.proxyPort");
- prop.remove("http.nonProxyHosts");
-
- prop.remove("https.proxyHost");
- prop.remove("https.proxyPort");
-
- prop.remove("ftp.proxyHost");
- prop.remove("ftp.proxyPort");
- prop.remove("ftp.nonProxyHosts");
-
- prop.remove("socksProxyHost");
- prop.remove("socksProxyPort");
- }
-
- //
-
- // 测试http
- public void showHttpProxy(Object... proxy)
- {
- URL url = null;
- try
- {
- url = new URL("http://blog.csdn.com/smallnest");
- }
- catch (MalformedURLException e)
- {
- return;
- }
- try
- {
- URLConnection conn = null;
- switch (proxy.length)
- {
- case 0:
- conn = url.openConnection();
- break;
- case 1:
- conn = url.openConnection((Proxy) proxy[0]);
- break;
- default:
- break;
- }
-
- if (conn == null)
- return;
-
- conn.setConnectTimeout(3000); // 设置连接超时时间
- InputStream in = conn.getInputStream();
- byte[] b = new byte[1024];
- try
- {
- while (in.read(b) > 0)
- {
- System.out.println(new String(b));
- }
- }
- catch (IOException e1)
- {
- }
- }
- catch (IOException e1)
- {
- e1.printStackTrace();
- }
-
- }
-
- // 测试ftp
- public void showFtpProxy(Object... proxy)
- {
- URL url = null;
- try
- {
- url = new URL("ftp://ftp.tsinghua.edu.cn");
- }
- catch (MalformedURLException e)
- {
- return;
- }
- try
- {
- URLConnection conn = null;
- switch (proxy.length)
- {
- case 0:
- conn = url.openConnection();
- break;
- case 1:
- conn = url.openConnection((Proxy) proxy[0]);
- break;
- default:
- break;
- }
-
- if (conn == null)
- return;
-
- conn.setConnectTimeout(3000); // 设置连接超时时间
- InputStream in = conn.getInputStream();
- byte[] b = new byte[1024];
- try
- {
- while (in.read(b) > 0)
- {
- System.out.println(new String(b));
- }
- }
- catch (IOException e1)
- {
- }
- }
- catch (IOException e1)
- {
- e1.printStackTrace();
- }
-
- }
-
- // 得到一个proxy
- public Proxy getProxy(Proxy.Type type, String host, int port)
- {
- SocketAddress addr = new InetSocketAddress(host,port);
- Proxy typeProxy = new Proxy(type, addr);
- return typeProxy;
- }
-
- public static void main(String[] args)
- {
- NetProxy proxy = new NetProxy();
- //测试代理服务器
- proxy.setLocalProxy();
- proxy.showHttpProxy();
-
- //下面两行是清除系统属性,而通过Proxy类指定代理服务器
- // proxy.removeLocalProxy
- //proxy.showHttpProxy(proxy.getProxy(Proxy.Type.SOCKS,"10.10.0.96",1080));
-
-
- }
- }
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