Add validateProfiles

Author: YangSiJun528

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/StandardConfigDataLocationResolver.java

@@ -54,6 +54,7 @@
  * @author Madhura Bhave
  * @author Phillip Webb
  * @author Scott Frederick
+ * @author Sijun Yang
  * @since 2.4.0
  */
 public class StandardConfigDataLocationResolver
@@ -154,6 +155,7 @@ public List<StandardConfigDataResource> resolveProfileSpecific(ConfigDataLocatio
 	private Set<StandardConfigDataReference> getProfileSpecificReferences(ConfigDataLocationResolverContext context,
 			ConfigDataLocation[] configDataLocations, Profiles profiles) {
 		Set<StandardConfigDataReference> references = new LinkedHashSet<>();
+		validateProfiles(profiles);
 		for (String profile : profiles) {
 			for (ConfigDataLocation configDataLocation : configDataLocations) {
 				String resourceLocation = getResourceLocation(context, configDataLocation);
@@ -163,6 +165,21 @@ private Set<StandardConfigDataReference> getProfileSpecificReferences(ConfigData
 		return references;
 	}
 
+	private void validateProfiles(Profiles profiles) {
+		Pattern validProfilePattern = Pattern.compile("^[a-zA-Z0-9_\\-]+$");
+		Assert.notNull(profiles, "Profiles must not be null");
+		for (String profile : profiles) {
+			Assert.notNull(profile, "Profile must not be null");
+			Assert.hasText(profile, "Profile must not be empty");
+			Assert.state(!profile.startsWith("-") && !profile.startsWith("_"),
+					() -> String.format("Invalid profile '%s': must not start with '-' or '_'", profile));
+			Assert.state(!profile.endsWith("-") && !profile.endsWith("_"),
+					() -> String.format("Invalid profile '%s': must not end with '-' or '_'", profile));
+			Assert.state(validProfilePattern.matcher(profile).matches(), () -> String
+				.format("Invalid profile '%s': must only contain alphanumeric characters, '-', or '_'", profile));
+		}
+	}
+
 	private String getResourceLocation(ConfigDataLocationResolverContext context,
 			ConfigDataLocation configDataLocation) {
 		String resourceLocation = configDataLocation.getNonPrefixedValue(PREFIX);