fix code

hutool-extra/src/main/java/cn/hutool/extra/servlet/JakartaServletUtil.java

@@ -3,6 +3,7 @@ package cn.hutool.extra.servlet;
 import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.bean.copier.CopyOptions;
 import cn.hutool.core.bean.copier.ValueProvider;
+import cn.hutool.core.collection.ListUtil;
 import cn.hutool.core.collection.iter.ArrayIter;
 import cn.hutool.core.exceptions.UtilException;
 import cn.hutool.core.io.FileUtil;
@@ -35,11 +36,14 @@ import java.io.PrintWriter;
 import java.io.Writer;
 import java.lang.reflect.Type;
 import java.nio.charset.Charset;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Date;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -300,6 +304,42 @@ public class JakartaServletUtil {
 		return headerMap;
 	}
 
+	/**
+	 * 获取请求所有的头（header）信息
+	 *
+	 * @param request 请求对象{@link HttpServletRequest}
+	 * @return header值
+	 * @since 6.0.0
+	 */
+	public static Map<String, List<String>> getHeadersMap(final HttpServletRequest request) {
+		final Map<String, List<String>> headerMap = new LinkedHashMap<>();
+
+		final Enumeration<String> names = request.getHeaderNames();
+		String name;
+		while (names.hasMoreElements()) {
+			name = names.nextElement();
+			headerMap.put(name, ListUtil.of(request.getHeaders(name)));
+		}
+
+		return headerMap;
+	}
+
+	/**
+	 * 获取响应所有的头（header）信息
+	 *
+	 * @param response 响应对象{@link HttpServletResponse}
+	 * @return header值
+	 */
+	public static Map<String, Collection<String>> getHeadersMap(final HttpServletResponse response) {
+		final Map<String, Collection<String>> headerMap = new HashMap<>();
+
+		final Collection<String> names = response.getHeaderNames();
+		for (final String name : names) {
+			headerMap.put(name, response.getHeaders(name));
+		}
+
+		return headerMap;
+	}
 
 	/**
 	 * 忽略大小写获得请求header中的信息

hutool-extra/src/main/java/cn/hutool/extra/servlet/ServletUtil.java

@@ -3,6 +3,7 @@ package cn.hutool.extra.servlet;
 import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.bean.copier.CopyOptions;
 import cn.hutool.core.bean.copier.ValueProvider;
+import cn.hutool.core.collection.ListUtil;
 import cn.hutool.core.collection.iter.ArrayIter;
 import cn.hutool.core.exceptions.UtilException;
 import cn.hutool.core.io.FileUtil;
@@ -11,9 +12,9 @@ import cn.hutool.core.io.IoUtil;
 import cn.hutool.core.map.CaseInsensitiveMap;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.net.NetUtil;
-import cn.hutool.core.net.url.URLEncoder;
 import cn.hutool.core.net.multipart.MultipartFormData;
 import cn.hutool.core.net.multipart.UploadSetting;
+import cn.hutool.core.net.url.URLEncoder;
 import cn.hutool.core.reflect.ConstructorUtil;
 import cn.hutool.core.text.StrUtil;
 import cn.hutool.core.util.ArrayUtil;
@@ -34,11 +35,14 @@ import java.io.PrintWriter;
 import java.io.Writer;
 import java.lang.reflect.Type;
 import java.nio.charset.Charset;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.Date;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -287,7 +291,7 @@ public class ServletUtil {
 	 * @since 4.6.2
 	 */
 	public static Map<String, String> getHeaderMap(final HttpServletRequest request) {
-		final Map<String, String> headerMap = new HashMap<>();
+		final Map<String, String> headerMap = new LinkedHashMap<>();
 
 		final Enumeration<String> names = request.getHeaderNames();
 		String name;
@@ -299,6 +303,42 @@ public class ServletUtil {
 		return headerMap;
 	}
 
+	/**
+	 * 获取请求所有的头（header）信息
+	 *
+	 * @param request 请求对象{@link HttpServletRequest}
+	 * @return header值
+	 * @since 6.0.0
+	 */
+	public static Map<String, List<String>> getHeadersMap(final HttpServletRequest request) {
+		final Map<String, List<String>> headerMap = new LinkedHashMap<>();
+
+		final Enumeration<String> names = request.getHeaderNames();
+		String name;
+		while (names.hasMoreElements()) {
+			name = names.nextElement();
+			headerMap.put(name, ListUtil.of(request.getHeaders(name)));
+		}
+
+		return headerMap;
+	}
+
+	/**
+	 * 获取响应所有的头（header）信息
+	 *
+	 * @param response 响应对象{@link HttpServletResponse}
+	 * @return header值
+	 */
+	public static Map<String, Collection<String>> getHeadersMap(final HttpServletResponse response) {
+		final Map<String, Collection<String>> headerMap = new HashMap<>();
+
+		final Collection<String> names = response.getHeaderNames();
+		for (final String name : names) {
+			headerMap.put(name, response.getHeaders(name));
+		}
+
+		return headerMap;
+	}
 
 	/**
 	 * 忽略大小写获得请求header中的信息