swagger-initializer.js is sent endcoded in the JVM's default charset.. Fixes #2207

Author: bnasslahsen

springdoc-openapi-common/src/test/java/org/springdoc/ui/AbstractSwaggerIndexTransformerTest.java

@@ -3,6 +3,7 @@
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -48,7 +49,7 @@ public class AbstractSwaggerIndexTransformerTest {
             "\n" +
             "  //</editor-fold>\n" +
             "};";
-    private final InputStream is = new ByteArrayInputStream(swaggerInitJs.getBytes());
+    private final InputStream is = new ByteArrayInputStream(swaggerInitJs.getBytes(StandardCharsets.UTF_8));
 
     private final String apiDocUrl = "http://test.springdoc.com/apidoc";
 

springdoc-openapi-ui/src/main/java/org/springdoc/webmvc/ui/SwaggerIndexPageTransformer.java

@@ -23,6 +23,7 @@
 package org.springdoc.webmvc.ui;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 
 import javax.servlet.http.HttpServletRequest;
 
@@ -75,7 +76,7 @@ public Resource transform(HttpServletRequest request, Resource resource,
 
 		if (isIndexFound) {
 			String html = defaultTransformations(resource.getInputStream());
-			return new TransformedResource(resource, html.getBytes());
+			return new TransformedResource(resource, html.getBytes(StandardCharsets.UTF_8));
 		}
 		else
 			return resource;

springdoc-openapi-webflux-ui/src/main/java/org/springdoc/webflux/ui/SwaggerIndexPageTransformer.java

@@ -22,6 +22,8 @@
 
 package org.springdoc.webflux.ui;
 
+import java.nio.charset.StandardCharsets;
+
 import org.springdoc.core.SwaggerUiConfigParameters;
 import org.springdoc.core.SwaggerUiConfigProperties;
 import org.springdoc.core.SwaggerUiOAuthProperties;
@@ -73,7 +75,7 @@ public Mono<Resource> transform(ServerWebExchange serverWebExchange, Resource re
 			boolean isIndexFound = antPathMatcher.match("**/swagger-ui/**/" + SWAGGER_INITIALIZER_JS, resource.getURL().toString());
 			if (isIndexFound) {
 				String html = defaultTransformations(resource.getInputStream());
-				return Mono.just(new TransformedResource(resource, html.getBytes()));
+				return Mono.just(new TransformedResource(resource, html.getBytes(StandardCharsets.UTF_8)));
 			}
 			else {
 				return Mono.just(resource);