Polishing in ServletServerHttpRequest

See gh-34675

spring-web/src/main/java/org/springframework/http/server/ServletServerHttpRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -273,22 +273,21 @@ public class ServletServerHttpRequest implements ServerHttpRequest {
 		Writer writer = new OutputStreamWriter(bos, FORM_CHARSET);
 
 		Map<String, String[]> form = request.getParameterMap();
-		for (Iterator<Map.Entry<String, String[]>> entryIterator = form.entrySet().iterator(); entryIterator.hasNext();) {
+		for (Iterator<Map.Entry<String, String[]>> entryItr = form.entrySet().iterator(); entryItr.hasNext();) {
-			Map.Entry<String, String[]> entry = entryIterator.next();
+			Map.Entry<String, String[]> entry = entryItr.next();
-			String name = entry.getKey();
 			List<String> values = Arrays.asList(entry.getValue());
-			for (Iterator<String> valueIterator = values.iterator(); valueIterator.hasNext();) {
+			for (Iterator<String> valueItr = values.iterator(); valueItr.hasNext();) {
-				String value = valueIterator.next();
+				String value = valueItr.next();
-				writer.write(URLEncoder.encode(name, FORM_CHARSET));
+				writer.write(URLEncoder.encode(entry.getKey(), FORM_CHARSET));
 				if (value != null) {
 					writer.write('=');
 					writer.write(URLEncoder.encode(value, FORM_CHARSET));
-					if (valueIterator.hasNext()) {
+					if (valueItr.hasNext()) {
 						writer.write('&');
 					}
 				}
 			}
-			if (entryIterator.hasNext()) {
+			if (entryItr.hasNext()) {
 				writer.append('&');
 			}
 		}

spring-web/src/test/java/org/springframework/http/server/ServletServerHttpRequestTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -182,9 +182,7 @@ class ServletServerHttpRequestTests {
 		mockRequest.addParameter("name 2", "value 2+1", "value 2+2");
 		mockRequest.addParameter("name 3", (String) null);
 
-		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
+		assertFormContent("name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3");
-		byte[] content = "name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3".getBytes(StandardCharsets.UTF_8);
-		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
 	@Test
@@ -192,9 +190,7 @@ class ServletServerHttpRequestTests {
 		mockRequest.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
 		mockRequest.setMethod("POST");
 
-		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
+		assertFormContent("");
-		byte[] content = "".getBytes(StandardCharsets.UTF_8);
-		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
 	@Test  // gh-31327
@@ -206,9 +202,7 @@ class ServletServerHttpRequestTests {
 		mockRequest.setContent("foo=bar".getBytes(StandardCharsets.UTF_8));
 		mockRequest.addHeader("Content-Length", 7);
 
-		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
+		assertFormContent("foo=bar");
-		byte[] content = "foo=bar".getBytes(StandardCharsets.UTF_8);
-		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}
 
 	@Test  // gh-32471
@@ -219,9 +213,15 @@ class ServletServerHttpRequestTests {
 		mockRequest.addParameter("lastName", "Test@er");
 		mockRequest.addHeader("Content-Length", 26);
 
+		int contentLength = assertFormContent("name=Test&lastName=Test%40er");
+		assertThat(request.getHeaders().getContentLength()).isEqualTo(contentLength);
+	}
+
+	private int assertFormContent(String expected) throws IOException {
 		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
-		assertThat(result).isEqualTo("name=Test&lastName=Test%40er".getBytes(StandardCharsets.UTF_8));
+		byte[] content = expected.getBytes(StandardCharsets.UTF_8);
-		assertThat(request.getHeaders().getContentLength()).isEqualTo(result.length);
+		assertThat(result).as("Invalid content returned").isEqualTo(content);
+		return result.length;
 	}
 
 	@Test