测试工具类

src/main/java/com/example/demo/draft/demo043/util/FormatUtil.java

@@ -164,6 +164,7 @@ public class FormatUtil {
      * @return 截取后的字符串
      */
     public static String substring(String str, Map<String, Object> params) {
+        try {
             if (str == null) return null;
 
             int start = params.containsKey("start") ? Integer.parseInt(params.get("start").toString()) : 0;
@@ -180,6 +181,10 @@ public class FormatUtil {
             } else {
                 return str.substring(start);
             }
+        } catch (Exception e) {
+            log.warn("str 截取失败，{}", str, e);
+            return "";
+        }
     }
 
     /**
@@ -1380,7 +1385,7 @@ public class FormatUtil {
         String strategy = params.containsKey("strategy") ? params.get("strategy").toString() : "clamp";
         
         switch (strategy) {
-            case "clamp":
+            case "clamp", "truncate":
                 if (value < min) return min;
                 if (value > max) return max;
                 return value;