20260728173026

code/fms/fms-api/src/main/java/cn/g3soft/fmsapi/utils/DbUtils.java

@@ -532,7 +532,26 @@ public class DbUtils {
     }
 
     private String buildOrderBy(String orderBy) {
-        String[] parts = orderBy.trim().split("\\s+");
+        String trimmed = orderBy.trim();
+        String lower = trimmed.toLowerCase();
+
+        // CASE 表达式：从末尾剥离可选 ASC/DESC，其余直接返回
+        if (lower.startsWith("case")) {
+            String direction = "";
+            if (lower.endsWith(" asc")) {
+                direction = " ASC";
+                trimmed = trimmed.substring(0, trimmed.length() - 4);
+            } else if (lower.endsWith(" desc")) {
+                direction = " DESC";
+                trimmed = trimmed.substring(0, trimmed.length() - 5);
+            }
+            if (!trimmed.trim().toLowerCase().endsWith("end")) {
+                throw new BusinessException("CASE 表达式必须以 END 结尾");
+            }
+            return trimmed + direction;
+        }
+
+        String[] parts = trimmed.split("\\s+");
         if (parts.length > 2) {
             throw new BusinessException("排序字段格式不正确");
         }