Common Beanshell Sampler methods of jmeter Learning Guide
Video address: http://edu.51cto.com/lecturer/4626073.html
In JMeter, you can use Beanshell Sampler to write some simple scripts to achieve more functions.
1 、 Beanshell
Beanshell is a lightweight Java script written in pure Java that dynamically executes standard java syntax and some extended script syntax, similar to javaScript and perl.
2. Built-in variables
In addition to the standard java syntax available in Beanshell Sampler, there are also some well-defined variables that can be used directly.
SampleResult
ResponseCode
ResponseMessage
IsSuccess
Label
FileName
Ctx
Vars
Props
Log
Next, I will talk about the most commonly used variables according to the frequency of use.
3 、 log
Used to print logs, the most common and the simplest
Print in jmeter.log, you can set the print level, you can print strings, variables, and so on.
How to use it:
1. Print a normal string log in info form:
Log.info ("hello world"); output hello world
2. Concatenate strings and variables (where token is a jmeter local variable):
Log.info ("hello world" + "${token}"); outputs the stitching results of hello world and token variables
3. Print custom variables
Str = "12345"
Log.info (str); output 12345
4. Print a normal string log in error form:
Log.info ("hihihi")
Log.error ("aaaaa")
Differences in output:
2018-12-27 19 0515 INFO o.a.j.u.BeanShellTestElement: hihihi
2018-12-27 19 0515 ERROR o.a.j.u.BeanShellTestElement: aaaaa
Print () prints the log
In beanshell, you can also use the print () function to print logs, output strings and other information.
Print () outputs information in the console, and log () outputs information in jmeter.log by default.
4 、 vars
Used to access jmeter local variables, very commonly used, be sure to master
It is usually used to access the contents of a string, as well as objects.
Vars.get ()
String mykey = vars.get ("keyname")
Get the value of the variable named keyname and save it in mykey.
Vars.put ()
Vars.put ("keyname", "value")
Save the variable keyname (value value) to the jmeter variable.
Vars.putObject ("OBJname", new Object ())
Save an object OBJname to the jmeter variable
Vars.remove ()
Vars.remove ("keyname")
Remove keyname from the jmeter variable.
5 、 props
Static variables used to access the jmeter global
Both key and value are in the form of string
Ymd = props.get ("START.YMD")
Gets the value of the property START.YMD (the date the script started).
Props.put ("PROP1", "1234")
Save 1234 in the global property PROP1.
6 、 ctx
Context information for the current thread
Examples of use:
Ctx.getCurrentSampler (); get the current sampler request
Ctx.getPreviousSampler (); get the previous sampler request
Ctx.getThreadNum (); gets the sequence number of the current thread, counting from 0
Ctx.getThread (); get the current thread
Ctx.getThreadGroup (); gets the current thread group
Ctx.getProperties (); get all attributes
Ctx.getVariables (); gets all variables of the current thread
7 、 SampleResult
SampleResult.setResponseData (data)
Custom response data.
