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illegal characters at line 1 and col 1 in xml response in jmeter

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0

I am trying to validate the xml response from an REST API using JMETER. I am using xml schema assertion to validate the response using xsd.

I am getting the following error on XML Schema Assertion

Assertion error: true
Assertion failure: false
Assertion failure message: fatal: line=1 col=1 Content is not allowed in prolog.

When i see the response that i have received i see there are some illegal characters that is added at the beginning of the response xml.

enter image description here

I have tried to modify jmeter.properties file and changed the following values

jmeter.save.saveservice.output_format=xml
jmeter.save.saveservice.data_type=true
jmeter.save.saveservice.label=true
jmeter.save.saveservice.response_code=true
jmeter.save.saveservice.successful=true
jmeter.save.saveservice.thread_name=true

Please help me in understanding how to remove the illegal characters in the response and allow the xsd validation to pass through.

jmeter

share|improve this question

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

add a comment | 

0

I am trying to validate the xml response from an REST API using JMETER. I am using xml schema assertion to validate the response using xsd.

I am getting the following error on XML Schema Assertion

Assertion error: true
Assertion failure: false
Assertion failure message: fatal: line=1 col=1 Content is not allowed in prolog.

When i see the response that i have received i see there are some illegal characters that is added at the beginning of the response xml.

enter image description here

I have tried to modify jmeter.properties file and changed the following values

jmeter.save.saveservice.output_format=xml
jmeter.save.saveservice.data_type=true
jmeter.save.saveservice.label=true
jmeter.save.saveservice.response_code=true
jmeter.save.saveservice.successful=true
jmeter.save.saveservice.thread_name=true

Please help me in understanding how to remove the illegal characters in the response and allow the xsd validation to pass through.

jmeter

share|improve this question

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

add a comment | 

I am trying to validate the xml response from an REST API using JMETER. I am using xml schema assertion to validate the response using xsd.

I am getting the following error on XML Schema Assertion

Assertion error: true
Assertion failure: false
Assertion failure message: fatal: line=1 col=1 Content is not allowed in prolog.

When i see the response that i have received i see there are some illegal characters that is added at the beginning of the response xml.

enter image description here

I have tried to modify jmeter.properties file and changed the following values

jmeter.save.saveservice.output_format=xml
jmeter.save.saveservice.data_type=true
jmeter.save.saveservice.label=true
jmeter.save.saveservice.response_code=true
jmeter.save.saveservice.successful=true
jmeter.save.saveservice.thread_name=true

Please help me in understanding how to remove the illegal characters in the response and allow the xsd validation to pass through.

jmeter

share|improve this question

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

Assertion error: true
Assertion failure: false
Assertion failure message: fatal: line=1 col=1 Content is not allowed in prolog.

jmeter.save.saveservice.output_format=xml
jmeter.save.saveservice.data_type=true
jmeter.save.saveservice.label=true
jmeter.save.saveservice.response_code=true
jmeter.save.saveservice.successful=true
jmeter.save.saveservice.thread_name=true

share|improve this question

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

share|improve this question

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

asked Mar 25 at 15:41

VinayakVinayak

833 bronze badges

1 Answer
1

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oldest

votes

1

These characters indicate Byte Order Mark so you can use BOMInputStream from the JSR223 PostProcessor in order to remove them from the response and replace the response data with "sanitized" XML.

1. Add JSR223 PostProcessor as a child of the HTTP Request sampler where you want to remove this BOM


2. 
   

   Put the following code into "Script" area:

   
   
   

   def is = new ByteArrayInputStream(prev.getResponseData())
   def bOMInputStream = new org.apache.commons.io.input.BOMInputStream(is)
   def bom = bOMInputStream.getBOM()
   def charsetName = bom == null ? 'UTF-8' : bom.getCharsetName()
   def reader = new InputStreamReader(new BufferedInputStream(bOMInputStream), charsetName)
   prev.setResponseData(org.apache.commons.io.IOUtils.toByteArray(reader, 'UTF-8'))
   

   
   


3. That's it, your assertion shouldn't be failing anymore.

More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It

share|improve this answer

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you @Dmitri, this worked like a charm.. :)
  
  – Vinayak
  Mar 26 at 6:15
  

  
  
  
  

add a comment | 

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1

These characters indicate Byte Order Mark so you can use BOMInputStream from the JSR223 PostProcessor in order to remove them from the response and replace the response data with "sanitized" XML.

1. Add JSR223 PostProcessor as a child of the HTTP Request sampler where you want to remove this BOM


2. 
   

   Put the following code into "Script" area:

   
   
   

   def is = new ByteArrayInputStream(prev.getResponseData())
   def bOMInputStream = new org.apache.commons.io.input.BOMInputStream(is)
   def bom = bOMInputStream.getBOM()
   def charsetName = bom == null ? 'UTF-8' : bom.getCharsetName()
   def reader = new InputStreamReader(new BufferedInputStream(bOMInputStream), charsetName)
   prev.setResponseData(org.apache.commons.io.IOUtils.toByteArray(reader, 'UTF-8'))
   

   
   


3. That's it, your assertion shouldn't be failing anymore.

More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It

share|improve this answer

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you @Dmitri, this worked like a charm.. :)
  
  – Vinayak
  Mar 26 at 6:15
  

  
  
  
  

add a comment | 

1

These characters indicate Byte Order Mark so you can use BOMInputStream from the JSR223 PostProcessor in order to remove them from the response and replace the response data with "sanitized" XML.

1. Add JSR223 PostProcessor as a child of the HTTP Request sampler where you want to remove this BOM


2. 
   

   Put the following code into "Script" area:

   
   
   

   def is = new ByteArrayInputStream(prev.getResponseData())
   def bOMInputStream = new org.apache.commons.io.input.BOMInputStream(is)
   def bom = bOMInputStream.getBOM()
   def charsetName = bom == null ? 'UTF-8' : bom.getCharsetName()
   def reader = new InputStreamReader(new BufferedInputStream(bOMInputStream), charsetName)
   prev.setResponseData(org.apache.commons.io.IOUtils.toByteArray(reader, 'UTF-8'))
   

   
   


3. That's it, your assertion shouldn't be failing anymore.

More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It

share|improve this answer

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you @Dmitri, this worked like a charm.. :)
  
  – Vinayak
  Mar 26 at 6:15
  

  
  
  
  

add a comment | 

These characters indicate Byte Order Mark so you can use BOMInputStream from the JSR223 PostProcessor in order to remove them from the response and replace the response data with "sanitized" XML.

1. Add JSR223 PostProcessor as a child of the HTTP Request sampler where you want to remove this BOM


2. 
   

   Put the following code into "Script" area:

   
   
   

   def is = new ByteArrayInputStream(prev.getResponseData())
   def bOMInputStream = new org.apache.commons.io.input.BOMInputStream(is)
   def bom = bOMInputStream.getBOM()
   def charsetName = bom == null ? 'UTF-8' : bom.getCharsetName()
   def reader = new InputStreamReader(new BufferedInputStream(bOMInputStream), charsetName)
   prev.setResponseData(org.apache.commons.io.IOUtils.toByteArray(reader, 'UTF-8'))
   

   
   


3. That's it, your assertion shouldn't be failing anymore.

More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It

share|improve this answer

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

share|improve this answer

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges

answered Mar 25 at 16:04

Dmitri TDmitri T

78.3k33 gold badges4141 silver badges7070 bronze badges