public classPayCommonUtil {public static Logger log = LoggerFactory.getLogger(PayCommonUtil.class);/*** 是否签名正确,规则是:按参数名称a-z排序,遇到空值的参数不参加签名。

*@returnboolean*/

public static boolean isTenpaySign(String characterEncoding, SortedMappackageParams, String API_KEY) {

StringBuffer sb= newStringBuffer();

Set es=packageParams.entrySet();

Iterator it=es.iterator();while(it.hasNext()) {

Map.Entry entry=(Map.Entry)it.next();

String k=(String)entry.getKey();

String v=(String)entry.getValue();if(!"sign".equals(k) && null != v && !"".equals(v)) {

sb.append(k+ "=" + v + "&");

}

}

sb.append("key=" +API_KEY);//算出摘要

String mysign =MD5.MD5Encode(sb.toString(), characterEncoding).toLowerCase();

String tenpaySign= ((String)packageParams.get("sign")).toLowerCase();//System.out.println(tenpaySign + " " + mysign);

returntenpaySign.equals(mysign);

}/***@author* @date 2016-4-22

* @Description：sign签名

*@paramcharacterEncoding

* 编码格式

*@paramparameters

* 请求参数

*@return

*/

public static String createSign(String characterEncoding, SortedMappackageParams, String API_KEY) {

StringBuffer sb= newStringBuffer();

Set es=packageParams.entrySet();

Iterator it=es.iterator();while(it.hasNext()) {

Map.Entry entry=(Map.Entry) it.next();

String k=(String) entry.getKey();

String v= "";try{

v=(String) entry.getValue();

}catch(Exception e) {//TODO: handle exception

v = entry.getValue() + "";

}if (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) {

sb.append(k+ "=" + v + "&");

}

}

sb.append("key=" +API_KEY);

String sign=MD5.MD5Encode(sb.toString(), characterEncoding).toUpperCase();returnsign;

}/***@author* @date 2016-4-22

* @Description：将请求参数转换为xml格式的string

*@paramparameters

* 请求参数

*@return

*/

public static String getRequestXml(SortedMapparameters) {

StringBuffer sb= newStringBuffer();

sb.append("");

Set es=parameters.entrySet();

Iterator it=es.iterator();while(it.hasNext()) {

Map.Entry entry=(Map.Entry) it.next();

String k=(String) entry.getKey();

String v= "";try{

v=(String) entry.getValue();

}catch(Exception e) {//TODO: handle exception

v = entry.getValue() + "";

}if ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k) || "sign".equalsIgnoreCase(k)) {

sb.append("" + "" + k + ">");

}else{

sb.append("" + v + "" + k + ">");

}

}

sb.append("");returnsb.toString();

}/*** 取出一个指定长度大小的随机正整数.

*

*@paramlength

* int 设定所取出随机数的长度。length小于11

*@returnint 返回生成的随机数。*/

public static int buildRandom(intlength) {int num = 1;double random =Math.random();if (random < 0.1) {

random= random + 0.1;

}for (int i = 0; i < length; i++) {

num= num * 10;

}return (int) ((random *num));

}/*** 获取当前时间 yyyyMMddHHmmss

*

*@returnString*/

public staticString getCurrTime() {

Date now= newDate();

SimpleDateFormat outFormat= new SimpleDateFormat("yyyyMMddHHmmss");

String s=outFormat.format(now);returns;

}public staticJSONObject httpsRequestToJsonObject(String requestUrl,

String requestMethod, String outputStr) {

JSONObject jsonObject= null;try{

StringBuffer buffer=httpsRequest(requestUrl, requestMethod,

outputStr);

jsonObject=JSONObject.fromObject(buffer.toString());

}catch(ConnectException ce) {

log.error("连接超时：" +ce.getMessage());

}catch(Exception e) {

log.error("https请求异常：" +e.getMessage());

}returnjsonObject;

}private staticStringBuffer httpsRequest(String requestUrl,

String requestMethod, String output)throwsNoSuchAlgorithmException, NoSuchProviderException,

KeyManagementException, MalformedURLException, IOException,

ProtocolException, UnsupportedEncodingException {

URL url= newURL(requestUrl);

HttpsURLConnection connection=(HttpsURLConnection) url

.openConnection();

connection.setDoOutput(true);

connection.setDoInput(true);

connection.setUseCaches(false);

connection.setRequestMethod(requestMethod);if (null !=output) {

OutputStream outputStream=connection.getOutputStream();

outputStream.write(output.getBytes("UTF-8"));

outputStream.close();

}//从输入流读取返回内容

InputStream inputStream =connection.getInputStream();

InputStreamReader inputStreamReader= newInputStreamReader(

inputStream,"utf-8");

BufferedReader bufferedReader= newBufferedReader(inputStreamReader);

String str= null;

StringBuffer buffer= newStringBuffer();while ((str = bufferedReader.readLine()) != null) {

buffer.append(str);

}

bufferedReader.close();

inputStreamReader.close();

inputStream.close();

inputStream= null;

connection.disconnect();returnbuffer;

}

}