怎么利用java程序获取视频的评论

package other;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.HttpException;import org.apache.commons.httpclient.methods.GetMethod;public class 获取视频评论 {    public static String  escape (String src) {  int i;    char j;    StringBuffer tmp = new StringBuffer();    tmp.ensureCapacity(src.length()*6);    for (i=0;i<src.length() ;i++ )      {           j = src.charAt(i);        if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j))                tmp.append(j);        else    if (j<256)    {             tmp.append( "%" );            if (j<16)                  tmp.append( "0" );            tmp.append( Integer.toString(j,16) );        }    else    {            tmp.append( "%u" );            tmp.append( Integer.toString(j,16) );        }      }      return tmp.toString();    }     public static String  unescape (String src) {         StringBuffer tmp = new StringBuffer();        tmp.ensureCapacity(src.length());        int  lastPos=0,pos=0;        char ch;        while (lastPos<src.length())  {   pos = src.indexOf("%",lastPos);        if (pos == lastPos)    {    if (src.charAt(pos+1)=='u')     {     ch = (char)Integer.parseInt(src.substring(pos+2,pos+6),16);        tmp.append(ch);        lastPos = pos+6;        }    else     {     ch = (char)Integer.parseInt(src.substring(pos+1,pos+3),16);        tmp.append(ch);        lastPos = pos+3;        }    }   else    {    if (pos == -1)     {     tmp.append(src.substring(lastPos));        lastPos=src.length();        }    else     {     tmp.append(src.substring(lastPos,pos));        lastPos=pos;        }    }  }  return tmp.toString();    }    public static void main(String[]args){        HttpClient client = new HttpClient();        GetMethod get = new GetMethod("http://v.youku.com/v_playlist/f17252787o1p0.html#replyLocation");        GetMethod get2 = new GetMethod("http://comments.youku.com/comments/~ajax/vpcommentContent.html?__ap=%7B%22id%22%3A%22XMzcyOTQ0MTY4%22%2C%22sid%22%3A355016202%2C%22page%22%3A2%2C%22last_modify%22%3A1333080602%7D&__ai=&__callback=displayComments");        Pattern pp = Pattern.compile("<p id=\\\"content_.*?>(.*?)<");        try {            System.out.println(client.executeMethod(get));            System.out.println(client.executeMethod(get2));            String rsult=get2.getResponseBodyAsString();            rsult=rsult.replaceAll("\\\\\"","\"");            Matcher mm = pp.matcher(rsult);            while(mm.find()){                String yy=mm.group(1).replaceAll("\\\\","%");                System.out.println(unescape(yy));            }        } catch (HttpException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        System.out.println();    }}