I have a web-service which return the encoded pdf but when i try to extract the data in it by using regular expression extractor(JMeter) it does not extract. I check the value of variable, it shows null value. I googled various sites but didn't succeed. After extracting the data i will save this in to one file.
I googled and refer various sites but didn't succeed. Below here are some references:
https://dzone.com/articles/how-to-read-a-pdf-file-in-apache-jmeter
https://www.blazemeter.com/blog/what-every-performance-tester-should-know-about-extracting-data-files-jmeter/
i got nothing in my variable when i see in debug sampler.
If you want to extract text from the PDF file into a JMeter Variable the only way of doing this is using JSR223 PostProcessor and PDFBox
Download tika-app.jar and put it to JMeter Classpath
Restart JMeter to pick the .jar up
Add JSR223 PostProcessor as a child of the request which returns the PDF
Put the following code into "Script" area:
def handler = new org.apache.tika.sax.BodyContentHandler();
def metadata = new org.apache.tika.metadata.Metadata();
def inputstream = new ByteArrayInputStream(prev.getResponseData());
def context = new org.apache.tika.parser.ParseContext();
def pdfparser = new org.apache.tika.parser.pdf.PDFParser();
pdfparser.parse(inputstream, handler, metadata, context);
vars.put('pdfText', handler.toString())
That's it, you should have the text from the PDF file as ${pdfText} JMeter Variable
More information:
PDFBox Examples
Apache Groovy - Why and How You Should Use It
Related
How to extract the text/content of a pdf file using JSR223 PreProcessor in JMeter?
You will need a library like PDFBox for this
Add it and all its dependencies to JMeter Classpath
Restart JMeter to pick the .jars up
The simplest code to read text from PDF would be something like:
def doc = org.apache.pdfbox.pdmodel.PDDocument.load(new File('path-to-the-file.pdf'))
def text = new org.apache.pdfbox.text.PDFTextStripper().getText(doc)
//now do what you need with the text, i.e. save it into ${text} JMeter variable
vars.put('text', text)
More information:
Apache Groovy: What Is Groovy Used For?
Apache PDFBox Cookbook - Text Extraction
I have to send JSON requests based on the CSV test data. Suppose there are 90 records - which are basically the request bodies. I put the Thread in a loop to keep sending the request until the last one in the CSV.
Every time I get the response, I need to append them into a single CSV file. Now, since Jmeter Listener does not consolidate all the responses into CSV (I do not want it in xml), I want to know if I can write a Java snippet in BeanShell, capture all responses and write them to a CSV file.
You can use JSR223 Sampler with File.append adding text with , to append to CSV file
This will append to the end of the file.
File file = new File("out.txt")
file.append("hello\n")
If you want the "program"
Add JSR223 Listener to your Test Plan (since JMeter 3.1 it is recommended to use JSR223 Test Elements for scripting)
Put the following code into "Script" area
new File('myfile.csv') << prev.getResponseDataAsString() << System.getProperty('line.separator')
where prev stands for previous SampleResult class instance. Check out Top 8 JMeter Java Classes You Should Be Using with Groovy article for more information on JMeter API shorthands available for the JSR223 Test Elements.
A better option would be saving a response into a JMeter Variable using i.e. Regular Expression Extractor and writing it to a file via sample_variables property
I have a POST data from CSV used in excel
{"Name":"","Token":-1,"TimeScheduleToken":"1","AccessRule":[{"ObjectToken":"528","ObjectName":"Common_ wash_Room_Exit","RuleToken":"528","RuleType":2,"StartDate":null,"EndDate":null,"ArmingRightsId":null,"ControlModeId":null}]}
When performing a post-execution the JSON data in the request is not as same as from the CSV. Find the request in the image
Quotes given for the key value pair is doubled up and showed in the request. How to resolve this, kindly suggest
Vittal,
I have tried to reproduce your issue in JMeter 3.3 and noticed that its working fine. Please find below the settings that you need to do in 'CSV Data Config' element.
Moreover, I would recommend that when you are creating any csv file for the data then open the notepad and enter your data and then save it as .csv file to avoid any unnecessary elements/characters in the data.
You can also refer to the blog post to get more information on API load testing using JMeter: JMeter Load Testing Against APIs
I have no idea regarding how you're getting these double quotation marks, however here is how you can remove them in the runtime:
Add JSR223 PreProcessor as a child of the HTTP Request sampler
Put the following code into "Script" area:
def originalData = sampler.getArguments().getArgument(0).getValue()
def normalizedData = originalData.replaceAll("\"\"","\"")
sampler.getArguments().removeAllArguments()
sampler.addNonEncodedArgument("",normalizedData,"")
sampler.setPostBodyRaw(true)
That's it, the JSR223 PreProcessor will replace all occurrences of double quotation marks with single quotation marks.
sampler is a shorthand to parent sampler class implementation, in case of HTTP Request sampler it would be HTTPSamplerProxy, see class documentation for all available functions and properties.
See Apache Groovy - Why and How You Should Use It article to learn more about using Groovy scripting in JMeter tests.
on a JMeter test plan, I have too many HTTP requests. One of these creates a new session every time when clicking the create button.
How do I store that session_id in a CSV file for further operation?
Given you have already extracted this session_id using the relevant JMeter PostProcessor you can save its value into a file using JSR223 PostProcessor and the code like:
new File('/path/to/your/file.csv') << vars.get('session_id') << System.getProperty('line.separator')
Make sure you select groovy in the "Language" dropdown and tick Cache compiled script if available box.
If ${session_id} variable exists - JMeter will store its value(s) in the file provided.
There are a few ways to do it. The most useful is RegExp post processor.
It could be found here as it is shown in the following image.
Place it under Request that returns needed data in response.
The RegExp catches groups and stores them under different variable names, based on Name of Create Variable. The values could be searched in different areas of Response, as it is demonstrated in the image, we can search in headers, redirected pages, main bodies and so on. The Stored variable could be re-used in other HTTP Requests or processors (Post and Pre) through ${VariableName} (e.g. ${JSESSION_ID})
Reference name
RegExp itself
Capturing group
Match number
A default value to set if RegExp didn't work
DEBUG:
If a value is not found, the DEBUG in cooperation with Tree Results Viewer can help. Here they are :
The general script structure might look like :
Add BeanShell PostProcessor. Copy, paste the below code (with your modifications for path and var).
var = vars.get("your_variable_name");
FileWriter fstream = new FileWriter("/your/desired/path/results.csv", true);
BufferedWriter out = new BufferedWriter(fstream);
out.write(var);
out.write(System.getProperty("line.separator"));
out.close();
fstream.close();
In jMeter How to get multi part body in BeanShell PreProcessor
I need to get the image data and post parameters
by using sampler.getArguments(); I am able to get the post parameters but not the image file
Please help me
You can use getHTTPFiles method of Sampler API.
sampler.getHTTPFiles() will return the file path HTTPFileArg in an array through which you can update new file at run time.
Update:
String path = sampler.getHTTPFiles()[0].getPath();
byte[] array = Files.readAllBytes(new File(path).toPath());
Something like:
File image = new File(sampler.getHTTPFiles()[0].getPath());
//do what you need with the image file
If you need extended image information take a look at ImageIO. For more Beanshell tips and tricks check out How to Use BeanShell: JMeter's Favorite Built-in Component