The following is the situation where I encountered this problem:

1. I lack jdk. Then I downloaded a 1.8 jdk.

2. Lack of environment variable configuration

Solve the problem one: Go to the official website to download.

Solve the problem two:

This is the directory where I installed jmeter:

This is the directory where I installed jdk

Start configuring environment variables:

They are:

classpath %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;D:\Java\jdk1.8.0_211\bin;D:\apache-jmeter-5.1.1\bin;

JAVA_HOME D:\Java\jdk1.8.0_211

JMETER_HOME D:\apache-jmeter-5.1.1

PATH %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin

 

Note: Move %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin in the path to the forefront