diff --git a/modules/spring-boot-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java b/modules/spring-boot-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
index 2387915c32c709ae317834098cac52efe6ec2deb..842aff3de117fb07256fd1cd437e17d01bb927ef 100644
--- a/modules/spring-boot-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
+++ b/modules/spring-boot-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
@@ -7,7 +7,6 @@ import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -45,7 +44,7 @@ public class SpringRedisGenericCache implements Level2Cache {
 	public void clear() {
 		Collection<String> keys = keys();
 		keys.stream().forEach(k -> {
-			redisTemplate.delete(this.region + ":" + k);
+			redisTemplate.delete(k);
 		});
 	}
 
@@ -67,7 +66,12 @@ public class SpringRedisGenericCache implements Level2Cache {
 
 	@Override
 	public Collection<String> keys() {
-		return redisTemplate.keys(this.region + ":*").stream().map(k->k.substring(this.region.length()+1)).collect(Collectors.toSet());
+		Set<String> list = redisTemplate.keys(this.region + ":*");
+		List<String> keys = new ArrayList<>(list.size());
+		for (String s : list) {
+			keys.add(s);
+		}
+		return keys;
 	}
 
 	@Override
diff --git a/modules/spring-boot2-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java b/modules/spring-boot2-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
index 49eb85b272c630538a6227c17fc8e97c9d3aaca7..8b4b1ae311c784edd9073cdb91e666c176729e1f 100644
--- a/modules/spring-boot2-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
+++ b/modules/spring-boot2-starter/src/net/oschina/j2cache/cache/support/redis/SpringRedisGenericCache.java
@@ -7,7 +7,6 @@ import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -45,7 +44,7 @@ public class SpringRedisGenericCache implements Level2Cache {
 	public void clear() {
 		Collection<String> keys = keys();
 		keys.stream().forEach(k -> {
-			redisTemplate.delete(this.region + ":" + k);
+			redisTemplate.delete(k);
 		});
 	}
 
@@ -67,7 +66,12 @@ public class SpringRedisGenericCache implements Level2Cache {
 
 	@Override
 	public Collection<String> keys() {
-		return redisTemplate.keys(this.region + ":*").stream().map(k->k.substring(this.region.length()+1)).collect(Collectors.toSet());
+		Set<String> list = redisTemplate.keys(this.region + ":*");
+		List<String> keys = new ArrayList<>(list.size());
+		for (String s : list) {
+			keys.add(s);
+		}
+		return keys;
 	}
 
 	@Override
diff --git a/pom.xml b/pom.xml
index 1455283168eb9e9049380cc0e4421a2dd3669c10..445385744d15fdf474584dba046045c65856c0e2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    
+    跌跌跌
     <groupId>net.oschina.j2cache</groupId>
     <artifactId>j2cache</artifactId>
     <version>2.7.6-release</version>