Treat java.nio.charset.Charset as string type by default. fixes #1348

Author: bnasslahsen

springdoc-openapi-common/src/main/java/org/springdoc/core/SpringDocConfiguration.java

@@ -20,6 +20,7 @@
 
 package org.springdoc.core;
 
+import java.nio.charset.Charset;
 import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
@@ -101,6 +102,7 @@ public class SpringDocConfiguration {
 
 	static {
 		getConfig().replaceWithSchema(ObjectNode.class, new ObjectSchema())
+				.replaceWithClass(Charset.class, String.class)
 				.addResponseWrapperToIgnore(DeferredResult.class);
 	}
 

springdoc-openapi-webmvc-core/src/test/java/test/org/springdoc/api/app10/HelloController.java

@@ -18,6 +18,7 @@
 
 package test.org.springdoc.api.app10;
 
+import java.nio.charset.Charset;
 import java.util.Locale;
 
 import javax.servlet.http.HttpServletRequest;
@@ -38,6 +39,9 @@ public void test(HttpSession header, HttpServletRequest request, HttpServletResp
 
 	@GetMapping("/testreq")
 	public void testRequestAttribute(@RequestAttribute String sample, String s) {
+	}
 
+	@GetMapping(value = {"/employee"})
+	public void getEmployee(Charset test) {
 	}
 }

springdoc-openapi-webmvc-core/src/test/resources/results/app10.json

@@ -11,6 +11,29 @@
     }
   ],
   "paths": {
+    "/testreq": {
+      "get": {
+        "tags": [
+          "hello-controller"
+        ],
+        "operationId": "testRequestAttribute",
+        "parameters": [
+          {
+            "name": "s",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK"
+          }
+        }
+      }
+    },
     "/test": {
       "get": {
         "tags": [
@@ -34,15 +57,15 @@
         }
       }
     },
-    "/testreq": {
+    "/employee": {
       "get": {
         "tags": [
           "hello-controller"
         ],
-        "operationId": "testRequestAttribute",
+        "operationId": "getEmployee",
         "parameters": [
           {
-            "name": "s",
+            "name": "test",
             "in": "query",
             "required": true,
             "schema": {