fix settle_month

src/main/java/au/com/royalpay/payment/manage/surchargeAccount/core/impl/SurchargeAccountServiceImpl.java

@@ -11,6 +11,8 @@ import au.com.royalpay.payment.tools.exceptions.ServerErrorException;
 import au.com.royalpay.payment.tools.lock.Locker;
 import au.com.royalpay.payment.tools.permission.enums.ManagerRole;
 import com.alibaba.fastjson.JSONObject;
+import org.apache.commons.lang3.time.DateFormatUtils;
+import org.apache.commons.lang3.time.DateUtils;
 import org.joda.time.DateTime;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -19,6 +21,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 import javax.annotation.Resource;
 import java.math.BigDecimal;
+import java.text.DateFormat;
 import java.util.Comparator;
 import java.util.Date;
 import java.util.List;
@@ -53,7 +56,7 @@ public class SurchargeAccountServiceImpl implements SurchargeAccountService {
             surchargeTrans.sort(Comparator.comparing(trans -> trans.getDate("create_time")));
             JSONObject detail = new JSONObject();
             detail.put("client_id", clientId);
-            detail.put("settle_month", dateTo.toString("yyyy-MM"));
+            detail.put("settle_month", dateTo.plusMonths(-1).toString("yyyy-MM"));
             BigDecimal creditAmount = surchargeTrans.stream()
                     .filter(trans -> "Credit".equals(trans.getString("type")))
                     .map(trans -> trans.getBigDecimal("amount"))