java http get 发送数据

package aaa;

import java.net.*;
import java.io.*;

public class OpenUrl
{

public String getContent(String strUrl)
// 一个public方法，返回字符串，错误则返回"error open url"

{

try{

URL url=new URL(strUrl);

BufferedReader br=new BufferedReader(new InputStreamReader(url.openStream()));

String s="";
StringBuffer sb=new StringBuffer("");

while((s=br.readLine())!=null)
{

sb.append(s+"/r/n");

}

br.close();

return sb.toString();

}
catch(Exception e){
return "error open url" + strUrl;

}

}
}