From 124705080bf7a5fc47791657baae4036c4685f0a Mon Sep 17 00:00:00 2001
From: Andy Wilkinson <awilkinson@pivotal.io>
Date: Fri, 7 Sep 2018 14:04:23 +0100
Subject: [PATCH] Tolerate context root redirect not being configurable on
 Tomcat 7

Closes gh-13821
---
 .../boot/autoconfigure/web/ServerProperties.java           | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
index 6214e4f863..4046766b0e 100644
--- a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
+++ b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
@@ -1049,7 +1049,12 @@ public class ServerProperties
 
 				@Override
 				public void customize(Context context) {
-					context.setMapperContextRootRedirectEnabled(redirectContextRoot);
+					try {
+						context.setMapperContextRootRedirectEnabled(redirectContextRoot);
+					}
+					catch (NoSuchMethodError ex) {
+						// Tomcat 7. Continue.
+					}
 				}
 
 			});