refactor

@@ -24,6 +24,8 @@ import org.springframework.beans.factory.annotation.Value;
 import java.io.UnsupportedEncodingException;
 import java.math.BigDecimal;
 import java.net.URLEncoder;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.text.SimpleDateFormat;
 import java.util.*;
 
@@ -672,6 +674,17 @@ public abstract class AlipayServiceAbstract extends AbstractPayService {
 	 * @return
 	 */
 	private String getSignString(Map<String, String> paramsMap) {
+		return getSignString(paramsMap, StandardCharsets.UTF_8);
+	}
+
+
+
+	/**
+	 * 获取支付宝回调待签名字符串
+	 * @param paramsMap
+	 * @return
+	 */
+	private String getSignString(Map<String, String> paramsMap, Charset charset) {
 		if(null == paramsMap) {
 			return "";
 		}
@@ -685,11 +698,7 @@ public abstract class AlipayServiceAbstract extends AbstractPayService {
 			if(StringUtils.isEmpty(entry.getValue())) 			{
 				continue;
 			}
-			try {
-				sortMap.put(entry.getKey(), new String(entry.getValue().getBytes("ISO-8859-1")));
-			} catch (UnsupportedEncodingException e) {
-				logger.error("解析支付宝回调参数出错：key={}, msg= {}",entry.getKey(), e.getMessage());
-			}
+			sortMap.put(entry.getKey(), new String(entry.getValue().getBytes(charset)));
 		}
 
 		return getUrlString(sortMap);