fix: 🐛 resolve incorrect parsing of constants in maxLength

- Update `JavaFieldUtil.getParamMaxLength` to use ClassLoader
- Modify `ParamsBuildHelper` to pass ClassLoader to `getParamMaxLength`
- Enhance `IJavadocDocTemplate` to use new `getParamMaxLength` method

Author: linwumingshi

src/main/java/com/ly/doc/helper/ParamsBuildHelper.java

@@ -233,7 +233,7 @@ private static List<ApiParam> processFields(String className, String pre, int le
 				continue;
 			}
 
-			String maxLength = JavaFieldUtil.getParamMaxLength(field.getAnnotations());
+			String maxLength = JavaFieldUtil.getParamMaxLength(classLoader, field.getAnnotations());
 			StringBuilder comment = new StringBuilder();
 			comment.append(docField.getComment());
 

src/main/java/com/ly/doc/template/IJavadocDocTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2024 smart-doc
+ * Copyright (C) 2018-2025 smart-doc
  *
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
@@ -21,17 +21,37 @@
 package com.ly.doc.template;
 
 import com.ly.doc.builder.ProjectDocConfigBuilder;
-import com.ly.doc.constants.*;
+import com.ly.doc.constants.DocAnnotationConstants;
+import com.ly.doc.constants.DocGlobalConstants;
+import com.ly.doc.constants.DocTags;
+import com.ly.doc.constants.JavaTypeConstants;
+import com.ly.doc.constants.ParamTypeConstants;
 import com.ly.doc.helper.ParamsBuildHelper;
 import com.ly.doc.model.ApiConfig;
 import com.ly.doc.model.ApiParam;
 import com.ly.doc.model.DocJavaMethod;
 import com.ly.doc.model.JavadocJavaMethod;
-import com.ly.doc.utils.*;
+import com.ly.doc.utils.ApiParamTreeUtil;
+import com.ly.doc.utils.DocClassUtil;
+import com.ly.doc.utils.DocUtil;
+import com.ly.doc.utils.JavaClassUtil;
+import com.ly.doc.utils.JavaClassValidateUtil;
+import com.ly.doc.utils.JavaFieldUtil;
 import com.power.common.util.StringUtil;
-import com.thoughtworks.qdox.model.*;
+import com.thoughtworks.qdox.model.JavaAnnotation;
+import com.thoughtworks.qdox.model.JavaClass;
+import com.thoughtworks.qdox.model.JavaMethod;
+import com.thoughtworks.qdox.model.JavaParameter;
+import com.thoughtworks.qdox.model.JavaType;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -267,7 +287,7 @@ else if (JavaClassValidateUtil.isPrimitive(fullTypeName)) {
 					.setType(JavaClassUtil.getClassSimpleName(typeName))
 					.setDesc(comment.toString())
 					.setRequired(required)
-					.setMaxLength(JavaFieldUtil.getParamMaxLength(parameter.getAnnotations()))
+					.setMaxLength(JavaFieldUtil.getParamMaxLength(classLoader, parameter.getAnnotations()))
 					.setValue(mockValue)
 					.setVersion(DocGlobalConstants.DEFAULT_VERSION);
 				paramList.add(param);

src/main/java/com/ly/doc/utils/JavaFieldUtil.java

@@ -1,7 +1,7 @@
 /*
  * smart-doc
  *
- * Copyright (C) 2018-2024 smart-doc
+ * Copyright (C) 2018-2025 smart-doc
  *
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
@@ -118,10 +118,11 @@ public static String createMockValue(Map<String, String> paramsComments, String
 
 	/**
 	 * get param max length
+	 * @param classLoader classLoader
 	 * @param annotations annotation
 	 * @return max length
 	 */
-	public static String getParamMaxLength(List<JavaAnnotation> annotations) {
+	public static String getParamMaxLength(ClassLoader classLoader, List<JavaAnnotation> annotations) {
 		String maxLength = "";
 		for (JavaAnnotation annotation : annotations) {
 			String simpleAnnotationName = annotation.getType().getValue();
@@ -133,7 +134,7 @@ public static String getParamMaxLength(List<JavaAnnotation> annotations) {
 				annotationValue = annotation.getProperty(JSRAnnotationPropConstants.MAX_PROP);
 			}
 			if (Objects.nonNull(annotationValue)) {
-				maxLength = annotationValue.toString();
+				maxLength = DocUtil.resolveAnnotationValue(classLoader, annotationValue);
 			}
 		}
 		return maxLength;