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| 关键词： String import java username password Authenticator setProperty System PasswordAuthenti HttpURLConnectio |
java sample codes that access outer internet through proxy which require username and password use inner instead of extends is the most different 网上也有一些文章但是大多数涉及带有授权验证的proxy都有问题，主要问题就是出在对 Authenticator.setDefault的使用，以及base64编码的问题上代码是最没有二义性的文档，实现原理不再解释，请看代码去体会。如果转载请注明代码出处。 [email protected] package 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 [email protected]*/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://java.sun.com/\";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();} } |
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