java中的Regex和ISO-8859-1字符集

问题是我从matcher对象得到的字符串格式错误,像“”这样的加扰字符。

如何阻止regex库扰乱我的角色?

编辑:以下是一些代码:

private HttpResponse sendGetRequest(String url) throws ClientProtocolException, IOException
{
    HttpGet get = new HttpGet(url);
    return hclient.execute(get);
}
private static String getResponseBody(HttpResponse response) throws IllegalStateException, IOException
{
    InputStream input = response.getEntity().getContent();
    StringBuilder builder = new StringBuilder();
    int read;
    byte[] tmp = new byte[1024];

    while ((read = input.read(tmp))!=-1)
    {
        builder.append(new String(tmp), 0,read-1);
    }

    return builder.toString();
}
HttpResponse response = sendGetRequest(url);
String html = getResponseBody(response);
Matcher matcher = forum_pattern.matcher(html);
while(matcher.find()) // do stuff