circle

mallinkService/src/main/java/com/iformall/utils/sign/SignUtils.java

@@ -27,7 +27,7 @@ public class SignUtils {
 
         for(int var7 = 0; var7 < var6; ++var7) {
             String key = var5[var7];
-            String value = (String)params.get(key);
+            String value = params.get(key)==null?"":params.get(key).toString();
             if (value != null && !"".equals(value)) {
                 signStr.append(key).append("=").append(value).append("&");
             }