jmeter之Java request报错：java.lang.NoClassDefFoundError: redis/clients/jedis/Jedis

今天在学习Jmeter的java request，请求内容是连接redis并获取其中的一个字段值。结果在运行时报如下错误：

2018/05/24 13:08:20 ERROR - jmeter.threads.JMeterThread: Test failed! java.lang.NoClassDefFoundError: redis/clients/jedis/Jedis
    at cn.testfan.redis.RedisJavaTest.setupTest(RedisJavaTest.java:36)
    at org.apache.jmeter.protocol.java.sampler.JavaSampler.sample(JavaSampler.java:193)
    at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:475)
    at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:418)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:249)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: redis.clients.jedis.Jedis
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)

报错原因：jmeter中缺少相应jar包。

解决方法：在网上下载jedis-2.9.0.jar后将其放到jmeter的lib目录下，重启jmeter，运行成功。