1, download and install jdk configuration environment
2, download jmeter, decompression can be used directly, without having to install
3, enter the download address to download the plug-plugins-manager.jar
4. Once you have downloaded the plugins-manager.jar into \ \ lib \ ext under apache-jmeter-5.2.1
5, double-click ApacheJMeter.jar restart jmeter
6, open plugins-manager
7, upgrade webocket related plug-ins, restart jmeter