string username="username";string password="password";//注意这里的格式哦，为 "username:password"string usernamePassword = username + ":" + password;CredentialCache mycache = new CredentialCache();mycache.Add(new Uri(url), "Basic", new NetworkCredential(username, password));myReq.Credentials = mycache;myReq.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(usernamePassword))); WebResponse wr = myReq.GetResponse();Stream receiveStream = wr.GetResponseStream();StreamReader reader = new StreamReader(receiveStream, Encoding.UTF8);string content = reader.ReadToEnd();

import urllib2import sysimport reimport base64from urlparse import urlparse theurl = ‘http://api.minicloud.com.cn/statuses/friends_timeline.xml‘ username = ‘qleelulu‘password = ‘XXXXXX‘  # 你信这是密码吗？ base64string = base64.encodestring(                ‘%s:%s‘ % (username, password))[:-1] #注意哦，这里最后会自动添加一个\nauthheader =  "Basic %s" % base64stringreq.add_header("Authorization", authheader)try:    handle = urllib2.urlopen(req)except IOError, e:    # here we shouldn‘t fail if the username/password is right    print "It looks like the username or password is wrong."    sys.exit(1)thepage = handle.read()

<?php$fp = fsockopen("www.mydomain.com",80);fputs($fp,"GET /downloads HTTP/1.0");fputs($fp,"Host: www.mydomain.com");fputs($fp,"Authorization: Basic " . base64_encode("user:pass") . "");fpassthru($fp);?>

import mx.rpc.events.FaultEvent;import mx.rpc.events.ResultEvent;import mx.utils.Base64Encoder;import mx.rpc.http.HTTPService;URLRequestDefaults.authenticate = false;//设默认为false，否则用户较验错误时会弹出验证框 private var result:XML;private function initApp():void{    var base64enc:Base64Encoder = new Base64Encoder;    base64enc.encode("user:password"); //用户名和密码需要Base64编码    var user:String = base64enc.toString();     var http:HTTPService = new HTTPService;    http.addEventListener(ResultEvent.RESULT,resultHandler);//监听返回事件    http.addEventListener(FaultEvent.FAULT,faultHandler);     //监听失败事件    http.resultFormat = "e4x";//返回格式    http.url = "http://api.digu.com/statuses/friends_timeline.xml"; 以嘀咕网的API为列    http.headers = {"Authorization":"Basic " + user};    http.send();}private function resultHandler(e:ResultEvent):void{    result = XML(e.result);    test.dataProvider = result.status;//绑定数据}private function faultHandler(e:ResultEvent):void{    //处理失败}

class DocumentsController < ActionController  before_filter :verify_access   def show    @document = @user.documents.find(params[:id])  end   # Use basic authentication in my realm to get a user object.  # Since this is a security filter - return false if the user is not  # authenticated.  def verify_access    authenticate_or_request_with_http_basic("Documents Realm") do |username, password|      @user = User.authenticate(username, password)    end  endend

//需要Base64见：http://www.cnblogs.com/pingming/p/4165063.html                       

function make_base_auth(user, password) {  var tok = user + ‘:‘ + pass;  var hash = Base64.encode(tok);  return "Basic " + hash;} var auth = make_basic_auth(‘QLeelulu‘,‘mypassword‘);var url = ‘http://example.com‘; // 原始JavaScriptxml = new XMLHttpRequest();xml.setRequestHeader(‘Authorization‘, auth);xml.open(‘GET‘,url) // ExtJSExt.Ajax.request({    url : url,    method : ‘GET‘,    headers : { Authorization : auth }}); // jQuery$.ajax({    url : url,    method : ‘GET‘,    beforeSend : function(req) {        req.setRequestHeader(‘Authorization‘, auth);    }});