public class WeatherFilter{

private String html;

private String target="http://weather.news.sohu.com/query.php?city=北京";

public WeatherFilter()throws Exception{

this(null);

}

public WeatherFilter(String targetIn)throws Exception{

if(targetIn!=null)

this.target=targetIn;

URL targetURL=new URL(target);

HttpURLConnection conn=(HttpURLConnection)targetURL.openConnection();

conn.connect();

InputStream inputSteam=conn.getInputStream();

BufferedReader bufReader=new BufferedReader(new InputStreamReader(inputSteam));

StringBuffer buf=new StringBuffer();

String temp;

while((temp=bufReader.readLine())!=null){

buf.append(temp);

}

html=buf.toString();

html=html.toLowerCase();

}

public String toString(){

return html;

}

private void disposeSpaces(){

html=html.replaceAll(" ","");

html=html.replaceAll("\t","");

}

private void replaceAllInTag(String tag,String replace){

while(replaceAStyle(tag,replace));

}

private boolean replaceAStyle(String tag,String replace){

int pageLength=html.length();

int loc = html.indexOf("

if(loc>=0){

int loc2=html.indexOf(""+tag+">")+8;

StringBuffer buf=new StringBuffer();

for(int i=0;i

buf.append(html.charAt(i));

if(replace!=null)

buf.append(replace);

for(int i=loc2;i

buf.append(html.charAt(i));

html=buf.toString();

return true;

}

else{

return false;

}

}

private void markAllImages(){

boolean dispose=false;

do{

StringBuffer buf=new StringBuffer();

int pageLength=html.length();

int end=html.indexOf("

for(int i=0;i

buf.append(html.charAt(i));

buf.append("\n");

while(html.charAt(++end)!='>');

for(int i=end+1;i

buf.append(html.charAt(i));

}

html=buf.toString();

buf=null;

System.gc();

}while(html.indexOf("=0);

}