Tips for using the built-in variable vars in BeanShell

1 brief introduction

BeanShell There are built-in variables ,JSR223 There will also be corresponding variables
vars Is the most commonly used JMeter One of the variables
stay JMeter Inside , mapping org.apache.jmeter.threads Of JMeterVariables class
vars Provides the ability to read and write current thread variables
be-all JMeter The variables are java character string
If you need to store data in a JMeter variable , It needs to be converted to a string first
Official documents ：https://jmeter.apache.org/api/org/apache/jmeter/threads/JMeterVariables.html

2 Common methods

2.1 getThreadName

Method statement
public String getThreadName()

function ： Get the current running thread name

tn = vars.getThreadName();
log.info("Current thread name is "+tn);

result ：

2.2 getIteration

Method statement
public int getIteration()

function ： Gets the current iteration code of the thread

tn = vars.getIteration();
log.info("Current Iteration number is "+tn);

result ：

2.3 put

Method statement
public void put(String key, String value)

function ： Create or update string variables ,key Variable name ,value A variable's value

// First create the variable 
vars.put("name","shenzhen");
vars.put("age","60");  // Can not write 20
mname =vars.get("name");
mage = vars.get("age");
log.info("---mname is-----"+mname);
log.info("----age is------"+ mage);

// Update variables 
vars.put("age","24");
vage = vars.get("age");
log.info("-----mage is------ "+vage);

result ：

2.4 get

Method statement
public String get(String key)

function ： Get the value of a variable and convert it to a string , If the variable exists, the value is converted to a string , Otherwise return to null

//get The way 
vars.put("color","green");
vcolor = vars.get("color");
log.info("---volor is---" + vcolor);
vars.putObject("aman",["name":"shenzhen","sex":1,"age":30,"city":"shanghai"]);
vaman = vars.get("aman");
log.info("----vaman is----"+vaman);

// Variable does not exist 
vfont = vars.get("fonts");
log.info("----vfont is---"+vfont);

result ：

2.5 putObject

Method statement
public void putObject(String key,Object value)

function ： Create or update a non string variable .key Variable name ,value A variable's value

// Set up   Value of non string variable ：Numbers,Lists,Arrays,Maps
vars.putObject("number1",3.14);
vars.putObject("list1",[11,12,33,44]);
vars.putObject("array1",[1,2,3,4,5] as int[]);
vars.putObject("map1",["name":"shenzhen","sex":1,"age":30,"city":"shanghai"]);
vars.putObject("map2",["address":"jichang","phone":"16888"]);

// Get the value of the string variable Numbers,lists,Arrays,Maps
log.info("number1 is"+vars.getObject("number1").toString());
log.info("list1 count is "+vars.getObject("list1").size());
log.info("list1 first element is"+vars.getObject("list1").get(0));
log.info("array1 count is"+vars.getObject("array1").length);
log.info("map1's name is"+vars.getObject("map1").get("name"));

result ：

2.6 getObject

Method statement
public Object getObject(String key)

function ： Get the value of the variable （ Do not convert to string ）. Returns... If the variable does not exist null

vars.putObject("pank",24);
vpank = vars.getObject("pank");
log.info("vpank is "+vpank);

vcontent =vars.getObject("content");
log.info("vcontent is "+vcontent);

result ：

2.7 remove

Method statement
public Object remove(String key)

function ： Delete a variable , And return the value of the variable , Returns... If the variable does not exist null

// Variable does not exist 
v1 = vars.remove("shenzhen");
log.info("v1 is "+v1);

// Variable existence 
vars.put("name","123");
v2 = vars.remove("name");
log.info("v2 is "+ v2);

result ：