Change RedisSerializer qualifier to springSessionDefaultRedisSerializer

Fixes gh-350

docs/src/docs/asciidoc/index.adoc

@@ -565,6 +565,10 @@ You can use the following attributes to customize the configuration:
 * **maxInactiveIntervalInSeconds** - the amount of time before the session will expire in seconds
 * **redisNamespace** - allows configuring an application specific namespace for the sessions. Redis keys and channel ids will start with the prefix of `spring:session:<redisNamespace>:`.
 
+===== Custom RedisSerializer
+
+You can customize the serialization by creating a Bean named `springSessionDefaultRedisSerializer` that implements `RedisSerializer<Object>`.
+
 [[api-redisoperationssessionrepository-storage]]
 ==== Storage Details
 

spring-session/src/main/java/org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.java

@@ -165,7 +165,7 @@ public class RedisHttpSessionConfiguration extends SpringHttpSessionConfiguratio
 	}
 
 	@Autowired(required = false)
-	@Qualifier("defaultRedisSerializer")
+	@Qualifier("springSessionDefaultRedisSerializer")
 	public void setDefaultRedisSerializer(RedisSerializer<Object> defaultRedisSerializer) {
 		this.defaultRedisSerializer = defaultRedisSerializer;
 	}

spring-session/src/test/java/org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfigurationOverrideDefaultSerializerTests.java

@@ -56,7 +56,7 @@ public class RedisHttpSessionConfigurationOverrideDefaultSerializerTests {
 	static class Config {
 		@Bean
 		@SuppressWarnings("unchecked")
-		public RedisSerializer<Object> defaultRedisSerializer() {
+		public RedisSerializer<Object> springSessionDefaultRedisSerializer() {
 			return mock(RedisSerializer.class);
 		}