簡單的HttpURLConnection-Get

/**
* get方式請求服務器
* 
* @param url
* @param params
* @return
*/
public String doGetHttp(String url, HashMap<String, String> paramMaps) {
if (HUtil.isCheckStrEmpty(url) || paramMaps == null) {
return null;
}
HUtil.log("UHttpClient-doGetHttp-url=" + url + ", paramMaps="
+ paramMaps);
StringBuilder sbUrl = new StringBuilder();
sbUrl.append(url + "?");
Set<String> mSet = paramMaps.keySet();
for (String name : mSet) {
String value = paramMaps.get(name);
sbUrl.append(name + "=" + value + "&");
}
String requestUrl = sbUrl.toString();
HUtil.log("doGetHttp請求Url: " + requestUrl);
HttpURLConnection mConn = null;
String result = null;
try {
mConn = (HttpURLConnection) new URL(requestUrl).openConnection();
mConn.setConnectTimeout(HConstant.TIME_OUT_VALUE);// 超時時間
mConn.setRequestMethod("GET");// 請求方式
int code = mConn.getResponseCode();
if (code == 200) {
// 獲取請求返回值
BufferedReader br = new BufferedReader(new InputStreamReader(
mConn.getInputStream()));
StringBuilder mBuilder = new StringBuilder();
int charRead = -1;
while ((charRead = br.read()) != -1) {
mBuilder.append((char) charRead);
}
result = mBuilder.toString();
HUtil.log("doGetHttp-請求返回值：" + result);
br.close();// 關閉流
}
} catch (MalformedURLException e) {
HUtil.logFormat("請求URL不合法");
HUtil.writeException(e);
} catch (ProtocolException e) {
HUtil.logFormat("請求sock連接錯誤");
HUtil.writeException(e);
} catch (IOException e) {
HUtil.logFormat("請求Io異常");
HUtil.writeException(e);
} catch (Exception e) {
HUtil.logFormat("請求異常");
HUtil.writeException(e);
}
return result;
}