From cbd37b583ff00f33553e92249b3ece3fa543f675 Mon Sep 17 00:00:00 2001
From: shanman190 <shanman190@gmail.com>
Date: Thu, 30 Jul 2015 16:37:35 -0500
Subject: [PATCH] Make it easier to use YAML configuration to turn off a logger

A level named off is used to disable logging for a particular logger.
YAML interprets off as false, leading to a failed attempt to get the
LogLevel for FALSE. A workaround is to quote the level, i.e. use "off"
rather than off.

This commit updates LoggingApplicationListener to coerce the string
false back to the level off.

Closes gh-3631
See gh-3628
---
 .../boot/logging/LoggingApplicationListener.java           | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java b/spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java
index 6c7bfa44646..4d6873b844b 100644
--- a/spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java
+++ b/spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java
@@ -246,7 +246,12 @@ public class LoggingApplicationListener implements SmartApplicationListener {
 				name = null;
 			}
 			level = environment.resolvePlaceholders(level);
-			system.setLogLevel(name, LogLevel.valueOf(level.toUpperCase()));
+			if (Boolean.toString(false).equalsIgnoreCase(level)) {
+				system.setLogLevel(name, LogLevel.OFF);
+			}
+			else {
+				system.setLogLevel(name, LogLevel.valueOf(level.toUpperCase()));
+			}
 		}
 		catch (RuntimeException ex) {
 			this.logger.error("Cannot set level: " + level + " for '" + name + "'");