Java程序如何穿透帶有密碼驗證的代理

昵稱2807 2005-11-18

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Java程序如何穿透帶有密碼驗證的代理

網(wǎng)上也有一些文章但是大多數(shù)涉及帶有授權(quán)驗證的proxy都有問題，主要問題就是出在對Authenticator.setDefault的使用，以及base64編碼的問題上代碼是最沒有二義性的文檔，實現(xiàn)原理不再解釋，請看代碼去體會。

ackage org.chimae.net;

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;

/**

* @author chimae@cnjsp.org

*/

ublic class ProxyConnTest {

ublic static void initProxy(String host, int port, final String username,

final String password) {

Authenticator.setDefault(new Authenticator() {

rotected PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication(username,

ew 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\");

}

ublic static void main(String[] args) throws IOException {

String url = \"http://java./\";

String proxy = \"yourProxy\";

int port =8080;

String username =\"username\";

String password =\"password\";

String curLine = \"\";

String content = \"\";

URL server = new URL(url);

initProxy(proxy,port,username,password);

HttpURLConnection connection = (HttpURLConnection)server.openConnection();

connection.connect();

InputStream is = connection.getInputStream();

BufferedReader reader = new BufferedReader(new InputStreamReader(is));

while ((curLine = reader.readLine()) != null) {

content += curLine;

}

System.out.println(\"content= \" + content);

is.close();

}

}