在使用JSR223 Sampler和BeanShell Sampler时，会接触到二个变量：vars，props
它们有什么区别呢？

	本质	作用域	操作对象
vars	jmeter variable	单线程	getObject,putObject
props	jmeter properties	全局	get,put

1. vars

1.1. put

put只支持string类型，当我们put整形时，jmeter抛出异常
如果需要设置非string类型数据，请使用putObject

vax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: org.apache.jmeter.threads.JMeterVariables.put() is applicable for argument types: (java.lang.String, java.lang.Integer) values: [num, 3]
Possible solutions: put(java.lang.String, java.lang.String), get(java.lang.String)

vars.put("num", 3)

def x = vars.get("num")
def y = 7
def total = x + y

log.info("x + y = " + total)

1.2. putObject

当遇到map，list，function等对象时，请记住putObject，并配合getObject使用

vars.putObject("num", 3)

def x = vars.getObject("num")
def y = 7
def total = x + y

log.info("x + y = " + total)

输出：JSR223 Sampler: x + y = 10

props

共享数据使用props，线程独立使用vars

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2021-10-21 09:50:51,777 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 1-1
2021-10-21 09:50:51,778 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 2-1
2021-10-21 09:50:51,784 INFO o.a.j.t.JMeterThread: Thread is done: Thread Group 1-1
2021-10-21 09:50:51,784 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 1-1
2021-10-21 09:50:51,789 INFO o.a.j.p.j.s.J.读取变量: >>>>>>>>>>>>>>>>From jmeter properties
2021-10-21 09:50:51,789 INFO o.a.j.p.j.s.J.读取变量: ================null
2021-10-21 09:50:51,789 INFO o.a.j.t.JMeterThread: Thread is done: Thread Group 2-1
2021-10-21 09:50:51,789 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 2-1
2021-10-21 09:50:52,287 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 2-2
2021-10-21 09:50:52,289 INFO o.a.j.p.j.s.J.读取变量: >>>>>>>>>>>>>>>>From jmeter properties
2021-10-21 09:50:52,289 INFO o.a.j.p.j.s.J.读取变量: ================null
2021-10-21 09:50:52,289 INFO o.a.j.t.JMeterThread: Thread is done: Thread Group 2-2
2021-10-21 09:50:52,289 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 2-2