Java 嵌入Google AdSense 广告代码，googleadsense,package my.u

Java 嵌入Google AdSense 广告代码，googleadsense,package my.u

package my.util;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.net.URL;import java.net.URLEncoder;import javax.servlet.http.HttpServletRequest;/** * 嵌入Google AdSense 广告代码 *  * @author Winter Lau * @date 2009-7-1 下午10:49:27 */public class GoogleAdSense {    private static final String PAGEAD = "<a href="http://pagead2.googlesyndication.com/pagead/ads?">http://pagead2.googlesyndication.com/pagead/ads?";    static void googleAppendUrl(StringBuilder url, String param, String value)        throws UnsupportedEncodingException {      if (value != null) {        String encodedValue = URLEncoder.encode(value, "UTF-8");        url.append("&").append(param).append("=").append(encodedValue);      }    }    static void googleAppendScreenRes(StringBuilder url, String uaPixels,        String xUpDevcapScreenpixels) {      String screenRes = uaPixels;      String delimiter = "x";      if (uaPixels == null) {        screenRes = xUpDevcapScreenpixels;        delimiter = ",";      }      if (screenRes != null) {        String[] resArray = screenRes.split(delimiter);        if (resArray.length == 2) {          url.append("&u_w=").append(resArray[0]);          url.append("&u_h=").append(resArray[1]);        }      }    }    static void googleAppendDcmguid(StringBuilder url, String dcmguid) {      if (dcmguid != null) {        url.append("&dcmguid=").append(dcmguid);      }    }    /**     * 显示广告     * @param req     * @param pub_id (pub-1307862221338762)     * @param channel (4062021557)     * @throws IOException      */    public static String ad(HttpServletRequest req, String pub_id, String channel) throws IOException {        long googleDt = System.currentTimeMillis();        String googleHost = (req.isSecure() ? "<a href="https://">https://" : "<a href="http://">http://") + req.getHeader("Host");        StringBuilder googleAdUrlStr = new StringBuilder(PAGEAD);        googleAdUrlStr.append("ad_type=text_image");        googleAdUrlStr.append("&channel=");        googleAdUrlStr.append(channel);        googleAdUrlStr.append("&client=ca-mb-");        googleAdUrlStr.append(pub_id);        googleAdUrlStr.append("&dt=").append(googleDt);        googleAdUrlStr.append("&format=mobile_single");        googleAppendUrl(googleAdUrlStr, "host", googleHost);        googleAppendUrl(googleAdUrlStr, "ip", RequestUtils.getRemoteAddr(req));        googleAdUrlStr.append("&markup=xhtml");        googleAdUrlStr.append("&oe=utf8");        googleAdUrlStr.append("&output=xhtml");        googleAppendUrl(googleAdUrlStr, "ref", req.getHeader("Referer"));        String googleUrl = req.getRequestURL().toString();        if (req.getQueryString() != null) {            googleUrl += "?" + req.getQueryString().toString();        }        googleAppendUrl(googleAdUrlStr, "url", googleUrl);        googleAppendUrl(googleAdUrlStr, "useragent", req                .getHeader("User-Agent"));        googleAppendScreenRes(googleAdUrlStr, req.getHeader("UA-pixels"), req                .getHeader("x-up-devcap-screenpixels"));        googleAppendDcmguid(googleAdUrlStr, req.getHeader("X-DCMGUID"));        StringBuilder html = new StringBuilder();        URL googleAdUrl = new URL(googleAdUrlStr.toString());        BufferedReader reader = new BufferedReader(new InputStreamReader(                googleAdUrl.openStream(), "UTF-8"));        for (String line; (line = reader.readLine()) != null;) {            html.append(line);        }        return html.toString();    }}//该片段来自于http://byrx.net