添加可选[RedisTokenStorager&添加缓存token时的前缀wx

weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/token/WeixinJSTicketCreator.java

@@ -42,7 +42,7 @@ public class WeixinJSTicketCreator implements TokenCreator {
 
 	@Override
 	public String getCacheKey() {
-		return String.format("mp_jsticket_%s", appid);
+		return String.format("wx_mp_jsticket_%s", appid);
 	}
 
 	@Override

weixin4j-mp/src/main/java/com/foxinmy/weixin4j/mp/token/WeixinTokenCreator.java

@@ -40,7 +40,7 @@ public class WeixinTokenCreator implements TokenCreator {
 
 	@Override
 	public String getCacheKey() {
-		return String.format("mp_token_%s", appid);
+		return String.format("wx_mp_token_%s", appid);
 	}
 
 	@Override

weixin4j-mp/src/test/java/com/foxinmy/weixin4j/mp/test/MediaTest.java

@@ -55,7 +55,7 @@ public class MediaTest extends TokenTest {
 	@Test
 	public void download1() throws WeixinException, IOException {
 		MediaDownloadResult content = mediaApi.downloadMedia(
-				"V4GvAetzQQjj_ECx1Siqvccgm80a32tk1gRusOBYMk8Uouybl-CwSkGk8w7wKgvI", false);
+				"nD05mhmkW-SHVS8NfWSxdzJi-6VnVF5YSP5hmMWnKJUxLK5czAWtN4NhVmgEfVoe", false);
 		Assert.assertTrue(content != null);
 		System.err.println(content);
 	}