代理上网


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.PasswordAuthentication;
import java.net.URL;

public class ProxyConnTest {
public static void initProxy(String host, int port, final String username,
final String password) {
Authenticator.setDefault(new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username,
new String(password).toCharArray());
}
});
System.setProperty("http.proxyType", "4");
System.setProperty("http.proxyPort", Integer.toString(port));
System.setProperty("http.proxyHost", host);
System.setProperty("http.proxySet", "true");
}

public static void main(String[] args) throws IOException {
String url = "http://www.luoxiaoping.com";
String proxy = "192.168.0.3";
int port = 8080;
String username = "";
String password = "";
String curLine = "";
String content = "";
URL server = new URL(url);
initProxy(proxy, port, username, password);
HttpURLConnection connection = (HttpURLConnection) server
.openConnection();
connection.connect();
System.out.print(connection.getResponseMessage());
InputStream is = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,
"utf-8"));
while ((curLine = reader.readLine()) != null) {
content += curLine;
}
System.out.println("content= " + content);
is.close();
}
}
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