Add database property to RedisProperties

Add database property to RedisProperties and use it in
RedisAutoConfiguration.

Fixes gh-1379

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/redis/RedisAutoConfiguration.java

@@ -65,6 +65,7 @@ public class RedisAutoConfiguration {
 			if (this.properties.getPassword() != null) {
 				factory.setPassword(this.properties.getPassword());
 			}
+			factory.setDatabase(this.properties.getDatabase());
 			return factory;
 		}
 
@@ -86,6 +87,7 @@ public class RedisAutoConfiguration {
 			if (this.properties.getPassword() != null) {
 				factory.setPassword(this.properties.getPassword());
 			}
+			factory.setDatabase(this.properties.getDatabase());
 			return factory;
 		}
 

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/redis/RedisProperties.java

@@ -26,6 +26,8 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 @ConfigurationProperties(prefix = "spring.redis")
 public class RedisProperties {
 
+	private int database = 0;
+
 	private String host = "localhost";
 
 	private String password;
@@ -66,6 +68,14 @@ public class RedisProperties {
 		this.pool = pool;
 	}
 
+	public int getDatabase() {
+		return this.database;
+	}
+
+	public void setDatabase(int database) {
+		this.database = database;
+	}
+
 	/**
 	 * Pool properties.
 	 */

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/redis/RedisAutoConfigurationTests.java

@@ -51,11 +51,13 @@ public class RedisAutoConfigurationTests {
 	public void testOverrideRedisConfiguration() throws Exception {
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context, "spring.redis.host:foo");
+		EnvironmentTestUtils.addEnvironment(this.context, "spring.redis.database:1");
 		this.context.register(RedisAutoConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class);
 		this.context.refresh();
 		assertEquals("foo", this.context.getBean(JedisConnectionFactory.class)
 				.getHostName());
+		assertEquals(1, this.context.getBean(JedisConnectionFactory.class).getDatabase());
 	}
 
 	@Test