diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache
index 2a266136c30c..a7ea64a15f7f 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/webclient/api.mustache
@@ -92,11 +92,10 @@ public class {{classname}} {
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
         {{#hasQueryParams}}
 
-        {{#queryParams}}
-        queryParams.putAll(apiClient.parameterToMultiValueMap({{#collectionFormat}}ApiClient.CollectionFormat.valueOf("{{{.}}}".toUpperCase(Locale.ROOT)){{/collectionFormat}}{{^collectionFormat}}null{{/collectionFormat}}, "{{baseName}}", {{paramName}}));
-        {{/queryParams}}
-        {{/hasQueryParams}}
-        {{#hasHeaderParams}}
+        {{#queryParams}}{{#isExplode}}{{#hasVars}}{{#vars}}queryParams.putAll(apiClient.parameterToMultiValueMap({{#collectionFormat}}ApiClient.CollectionFormat.valueOf("{{{.}}}".toUpperCase(Locale.ROOT)){{/collectionFormat}}{{^collectionFormat}}null{{/collectionFormat}}, "{{baseName}}", {{paramName}}.{{getter}}()));
+        {{/vars}}{{/hasVars}}{{^hasVars}}queryParams.putAll(apiClient.parameterToMultiValueMap({{#collectionFormat}}ApiClient.CollectionFormat.valueOf("{{{.}}}".toUpperCase(Locale.ROOT)){{/collectionFormat}}{{^collectionFormat}}null{{/collectionFormat}}, "{{baseName}}", {{paramName}}));
+        {{/hasVars}}{{/isExplode}}{{^isExplode}}queryParams.putAll(apiClient.parameterToMultiValueMap({{#collectionFormat}}ApiClient.CollectionFormat.valueOf("{{{.}}}".toUpperCase(Locale.ROOT)){{/collectionFormat}}{{^collectionFormat}}null{{/collectionFormat}}, "{{baseName}}", {{paramName}}));
+        {{/isExplode}}{{/queryParams}}{{/hasQueryParams}}{{#hasHeaderParams}}
 
         {{#headerParams}}
         if ({{paramName}} != null)
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
index 9e260185f92e..a14984331eae 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
@@ -2272,6 +2272,30 @@ public void shouldProperlyExplodeRestTemplateQueryParameters_issue907() {
                                 + " objectParam.getSomeInteger()));");
     }
 
+    @Test
+    public void shouldProperlyExplodeWebClientQueryParameters() {
+        final Map<String, File> files = generateFromContract(
+                "src/test/resources/3_0/java/explode-query-parameter.yaml",
+                JavaClientCodegen.WEBCLIENT
+        );
+
+        JavaFileAssert.assertThat(files.get("DefaultApi.java"))
+                .printFileContent()
+                .assertMethod("searchRequestCreation")
+                .bodyContainsLines(
+                        "queryParams.putAll(apiClient.parameterToMultiValueMap(null, \"regular-param\","
+                                + " regularParam));")
+                .bodyContainsLines(
+                        "queryParams.putAll(apiClient.parameterToMultiValueMap(null, \"someString\","
+                                + " objectParam.getSomeString()));")
+                .bodyContainsLines(
+                        "queryParams.putAll(apiClient.parameterToMultiValueMap(null, \"someBoolean\","
+                                + " objectParam.getSomeBoolean()));")
+                .bodyContainsLines(
+                        "queryParams.putAll(apiClient.parameterToMultiValueMap(null, \"someInteger\","
+                                + " objectParam.getSomeInteger()));");
+    }
+
     private static Map<String, File> generateFromContract(final String pathToSpecification, final String library) {
         return generateFromContract(pathToSpecification, library, new HashMap<>());
     }
diff --git a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/FakeApi.java
index 4eda70f5a0c2..3a38dbe72869 100644
--- a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -212,6 +212,7 @@ private ResponseSpec fakeHttpSignatureTestRequestCreation(Pet pet, String query1
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query_1", query1));
+        
 
         if (header1 != null)
         headerParams.add("header_1", apiClient.parameterToString(header1));
@@ -788,7 +789,7 @@ private ResponseSpec testBodyWithQueryParamsRequestCreation(String query, User u
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query", query));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { 
@@ -1111,6 +1112,7 @@ private ResponseSpec testEnumParametersRequestCreation(List<String> enumHeaderSt
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_integer", enumQueryInteger));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_double", enumQueryDouble));
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "enum_query_model_array", enumQueryModelArray));
+        
 
         if (enumHeaderStringArray != null)
         headerParams.add("enum_header_string_array", apiClient.parameterToString(enumHeaderStringArray));
@@ -1234,6 +1236,7 @@ private ResponseSpec testGroupParametersRequestCreation(Integer requiredStringGr
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "required_int64_group", requiredInt64Group));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "string_group", stringGroup));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "int64_group", int64Group));
+        
 
         if (requiredBooleanGroup != null)
         headerParams.add("required_boolean_group", apiClient.parameterToString(requiredBooleanGroup));
@@ -1643,7 +1646,7 @@ private ResponseSpec testQueryParameterCollectionFormatRequestCreation(List<Stri
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "context", context));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "language", language));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "allowEmpty", allowEmpty));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { };
diff --git a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/PetApi.java
index f9ae47490280..45389ee255c1 100644
--- a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/PetApi.java
@@ -147,6 +147,7 @@ private ResponseSpec deletePetRequestCreation(Long petId, String apiKey) throws
         final MultiValueMap<String, String> cookieParams = new LinkedMultiValueMap<String, String>();
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
+
         if (apiKey != null)
         headerParams.add("api_key", apiClient.parameterToString(apiKey));
         final String[] localVarAccepts = { };
@@ -225,7 +226,7 @@ private ResponseSpec findPetsByStatusRequestCreation(List<String> status) throws
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "status", status));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
@@ -305,7 +306,7 @@ private ResponseSpec findPetsByTagsRequestCreation(Set<String> tags) throws WebC
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "tags", tags));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
diff --git a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/UserApi.java
index ebb82cc15b9a..68346059e913 100644
--- a/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/webclient-jakarta/src/main/java/org/openapitools/client/api/UserApi.java
@@ -439,7 +439,7 @@ private ResponseSpec loginUserRequestCreation(String username, String password)
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "username", username));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "password", password));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
diff --git a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/FakeApi.java
index a7602fbaff3d..2170874323d3 100644
--- a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -212,6 +212,7 @@ private ResponseSpec fakeHttpSignatureTestRequestCreation(Pet pet, String query1
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query_1", query1));
+        
 
         if (header1 != null)
         headerParams.add("header_1", apiClient.parameterToString(header1));
@@ -788,7 +789,7 @@ private ResponseSpec testBodyWithQueryParamsRequestCreation(String query, User u
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query", query));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { 
@@ -1111,6 +1112,7 @@ private ResponseSpec testEnumParametersRequestCreation(List<String> enumHeaderSt
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_integer", enumQueryInteger));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_double", enumQueryDouble));
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "enum_query_model_array", enumQueryModelArray));
+        
 
         if (enumHeaderStringArray != null)
         headerParams.add("enum_header_string_array", apiClient.parameterToString(enumHeaderStringArray));
@@ -1234,6 +1236,7 @@ private ResponseSpec testGroupParametersRequestCreation(Integer requiredStringGr
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "required_int64_group", requiredInt64Group));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "string_group", stringGroup));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "int64_group", int64Group));
+        
 
         if (requiredBooleanGroup != null)
         headerParams.add("required_boolean_group", apiClient.parameterToString(requiredBooleanGroup));
@@ -1643,7 +1646,7 @@ private ResponseSpec testQueryParameterCollectionFormatRequestCreation(List<Stri
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "context", context));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "language", language));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "allowEmpty", allowEmpty));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { };
diff --git a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/PetApi.java
index c5588dff9700..9be0a49522a3 100644
--- a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/PetApi.java
@@ -147,6 +147,7 @@ private ResponseSpec deletePetRequestCreation(Long petId, String apiKey) throws
         final MultiValueMap<String, String> cookieParams = new LinkedMultiValueMap<String, String>();
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
+
         if (apiKey != null)
         headerParams.add("api_key", apiClient.parameterToString(apiKey));
         final String[] localVarAccepts = { };
@@ -225,7 +226,7 @@ private ResponseSpec findPetsByStatusRequestCreation(List<String> status) throws
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "status", status));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
@@ -305,7 +306,7 @@ private ResponseSpec findPetsByTagsRequestCreation(Set<String> tags) throws WebC
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "tags", tags));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
diff --git a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/UserApi.java
index ad76ef2ea733..dab56cb7a2c0 100644
--- a/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/webclient-swagger2/src/main/java/org/openapitools/client/api/UserApi.java
@@ -439,7 +439,7 @@ private ResponseSpec loginUserRequestCreation(String username, String password)
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "username", username));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "password", password));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java
index a7602fbaff3d..2170874323d3 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -212,6 +212,7 @@ private ResponseSpec fakeHttpSignatureTestRequestCreation(Pet pet, String query1
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query_1", query1));
+        
 
         if (header1 != null)
         headerParams.add("header_1", apiClient.parameterToString(header1));
@@ -788,7 +789,7 @@ private ResponseSpec testBodyWithQueryParamsRequestCreation(String query, User u
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "query", query));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { 
@@ -1111,6 +1112,7 @@ private ResponseSpec testEnumParametersRequestCreation(List<String> enumHeaderSt
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_integer", enumQueryInteger));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "enum_query_double", enumQueryDouble));
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "enum_query_model_array", enumQueryModelArray));
+        
 
         if (enumHeaderStringArray != null)
         headerParams.add("enum_header_string_array", apiClient.parameterToString(enumHeaderStringArray));
@@ -1234,6 +1236,7 @@ private ResponseSpec testGroupParametersRequestCreation(Integer requiredStringGr
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "required_int64_group", requiredInt64Group));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "string_group", stringGroup));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "int64_group", int64Group));
+        
 
         if (requiredBooleanGroup != null)
         headerParams.add("required_boolean_group", apiClient.parameterToString(requiredBooleanGroup));
@@ -1643,7 +1646,7 @@ private ResponseSpec testQueryParameterCollectionFormatRequestCreation(List<Stri
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("multi".toUpperCase(Locale.ROOT)), "context", context));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "language", language));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "allowEmpty", allowEmpty));
-
+        
         final String[] localVarAccepts = { };
         final List<MediaType> localVarAccept = apiClient.selectHeaderAccept(localVarAccepts);
         final String[] localVarContentTypes = { };
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
index c5588dff9700..9be0a49522a3 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
@@ -147,6 +147,7 @@ private ResponseSpec deletePetRequestCreation(Long petId, String apiKey) throws
         final MultiValueMap<String, String> cookieParams = new LinkedMultiValueMap<String, String>();
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
+
         if (apiKey != null)
         headerParams.add("api_key", apiClient.parameterToString(apiKey));
         final String[] localVarAccepts = { };
@@ -225,7 +226,7 @@ private ResponseSpec findPetsByStatusRequestCreation(List<String> status) throws
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "status", status));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
@@ -305,7 +306,7 @@ private ResponseSpec findPetsByTagsRequestCreation(Set<String> tags) throws WebC
         final MultiValueMap<String, Object> formParams = new LinkedMultiValueMap<String, Object>();
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(ApiClient.CollectionFormat.valueOf("csv".toUpperCase(Locale.ROOT)), "tags", tags));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java
index ad76ef2ea733..dab56cb7a2c0 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/UserApi.java
@@ -439,7 +439,7 @@ private ResponseSpec loginUserRequestCreation(String username, String password)
 
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "username", username));
         queryParams.putAll(apiClient.parameterToMultiValueMap(null, "password", password));
-
+        
         final String[] localVarAccepts = { 
             "application/xml", "application/json"
         };