403禁止使用Java，但不能使用网络浏览器？

你只需要设置用户代理标头即可使其工作：

URLConnection connection = new URL("https://www.google.com/search?q=" + query).openConnection();connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11");connection.connect();BufferedReader r  = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charset.forName("UTF-8")));StringBuilder sb = new StringBuilder();String line;while ((line = r.readLine()) != null) {    sb.append(line);}System.out.println(sb.toString());

从异常堆栈跟踪可以看出，已为你透明地处理了SSL。

但是，获取结果数量并不是真的那么简单，在此之后，你必须通过获取cookie并解析重定向令牌链接来假冒你是浏览器。

String cookie = connection.getHeaderField( "Set-cookie").split(";")[0];Pattern pattern = Pattern.compile("content=\"0;url=(.*?)\"");Matcher m = pattern.matcher(response);if( m.find() ) {    String url = m.group(1);    connection = new URL(url).openConnection();    connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11");    connection.setRequestProperty("cookie", cookie );    connection.connect();    r  = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charset.forName("UTF-8")));    sb = new StringBuilder();    while ((line = r.readLine()) != null) {        sb.append(line);    }    response = sb.toString();    pattern = Pattern.compile("<div id="resultStats">about ([0-9,]+) results</div>");    m = pattern.matcher(response);    if( m.find() ) {        long amount = Long.parseLong(m.group(1).replaceAll(",", ""));        return amount;    }}

运行我得到的完整代码2930000000L。