微信 PayCommonUtil 生成 signature签名

 

import java.io.UnsupportedEncodingException;

import java.util.Iterator;

import java.util.Map;

import java.util.Random;

import java.util.Set;

import java.util.SortedMap;

 

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

 

public class PayCommonUtil {

 

private static Logger log = LoggerFactory.getLogger(PayCommonUtil.class);

 

/**

* 取出一个指定长度大小的随机正整数.

* 

* @param length

*            int 设定所取出随机数的长度。length小于11

* @return int 返回生成的随机数。

*/

public static String buildRandom(int length) {

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) + "");

}

 

public static String CreateNoncestr(int length) {

String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

String res = "";

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

Random rd = new Random();

res += chars.indexOf(rd.nextInt(chars.length() - 1));

}

return res;

}

 

public static String CreateNoncestr() {

String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";

String res = "";

for (int i = 0; i < 32; i++) {

Random rd = new Random();

res += chars.charAt(rd.nextInt(chars.length() - 1));

}

return res;

}

 

/**

* @author

* @date 2014-12-5下午2:29:34

* @Description：sign签名

* @param characterEncoding

*            编码格式

* @param parameters

*            请求参数

* @return

*/

@SuppressWarnings("unchecked")

public static String createSign(String characterEncoding, SortedMap<Object, Object> parameters) {

StringBuffer sb = new StringBuffer();

Set es = parameters.entrySet();

Iterator it = es.iterator();

while (it.hasNext()) {

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

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

Object v = entry.getValue();

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

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

}

}

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

String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();

return sign;

}

/**

* @author

* @date 2015-10-10下午2:29:34

* @Description：signature签名

* @param str

*            参数 key 集合

* @param parameters

*            请求参数

* @return

*/

@SuppressWarnings("unchecked")

public static String createSignature(String[] str, SortedMap<Object, Object> parameters) {

StringBuffer sb = new StringBuffer();

Set es = parameters.entrySet();

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

Iterator it = es.iterator();

while (it.hasNext()) {

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

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

Object v = entry.getValue();

if (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k) && k.equals(str[i])) {

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

}

}

}

String string1=sb.toString().substring(0,sb.toString().length()-1);

log.error("string1====="+string1);

// SHA1加密

String signature = null;

try {

signature = new SHA1().getDigestOfString(string1.getBytes("UTF-8")).toLowerCase();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return signature;

}

 

/**

* @author

* @date 2014-12-5下午2:32:05

* @Description：将请求参数转换为xml格式的string

* @param parameters

*            请求参数

* @return

*/

@SuppressWarnings("unchecked")

public static String getRequestXml(SortedMap<Object, Object> parameters) {

StringBuffer sb = new StringBuffer();

sb.append("<xml>");

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 = (String) entry.getValue();

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

sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">");

} else {

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

}

}

sb.append("</xml>");

return sb.toString();

}

 

/**

* @author

* @date 2014-12-3上午10:17:43

* @Description：返回给微信的参数

* @param return_code

*            返回编码

* @param return_msg

*            返回信息

* @return

*/

public static String setXML(String return_code, String return_msg) {

return "<xml><return_code><![CDATA[" + return_code + "]]></return_code><return_msg><![CDATA[" + return_msg + "]]></return_msg></xml>";

}

}