【代码】拼接一个GET请求URL

public String getUrl(String urls,HashMap params) {

String url = urls;

//添加url参数

if(params !=null) {

Iterator it = params.keySet().iterator();

StringBuffer sb =null;

while(it.hasNext()) {

String key = it.next();

String value = params.get(key);

if(sb ==null) {

sb =newStringBuffer();

sb.append("?");

}else{

sb.append("&");

}

sb.append(key);

sb.append("=");

sb.append(value);

}

url += sb.toString();

}

returnurl;

}