测试工具类

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

@@ -164,21 +164,26 @@ public class FormatUtil {
      * @return 截取后的字符串
      */
     public static String substring(String str, Map<String, Object> params) {
-        if (str == null) return null;
+        try {
+            if (str == null) return null;
 
-        int start = params.containsKey("start") ? Integer.parseInt(params.get("start").toString()) : 0;
+            int start = params.containsKey("start") ? Integer.parseInt(params.get("start").toString()) : 0;
 
-        if (params.containsKey("end")) {
+            if (params.containsKey("end")) {
-            int end = Integer.parseInt(params.get("end").toString());
+                int end = Integer.parseInt(params.get("end").toString());
-            if (end > str.length()) end = str.length();
+                if (end > str.length()) end = str.length();
-            if (start > end) start = 0;
+                if (start > end) start = 0;
-            return str.substring(start, end);
+                return str.substring(start, end);
-        } else if (params.containsKey("length")) {
+            } else if (params.containsKey("length")) {
-            int length = Integer.parseInt(params.get("length").toString());
+                int length = Integer.parseInt(params.get("length").toString());
-            if (start + length > str.length()) length = str.length() - start;
+                if (start + length > str.length()) length = str.length() - start;
-            return str.substring(start, start + length);
+                return str.substring(start, start + length);
-        } else {
+            } else {
-            return str.substring(start);
+                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;