报错：Cannot get Jedis connection； nested exception is redis.clients.jedis.exceptions.
使用spring测试redis相关操作时，出现以下错误"C:\Z cap\jdk8u91\bin\java.exe" "-javaagent:C:\Z cap\idea\IntelliJ IDEA 2020.2.3\lib\idea_rt.jar=60156:C:\Z cap\idea\IntelliJ IDEA 2020.2.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Z cap\jdk8u91\jr
