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New2API's avatar
New2API
Frequent Contributor
3 years ago

How to encode a PDF file to base64 in groovy?

Hi, I am using below script to encode a PDF file. However, file gets corrupted when decoding or an API uploads it to a specific location.

Can you please point out if there is a better way or correct way to encode a PDF file using groovy script.

 

import net.sf.*
import groovy.io.FileType

 

//## Get Directories ##//
def projectPath = context.expand('${projectDir}')
def filePath = context.expand( '${#Project#TestDataPath}' ) 
def docName = context.expand( '${#TestCase#fileName}' )

 

//## get file ##//
log.info "get pdf from $dumpFilePath"
testFile = new File(filePath + "$docName").text

//Encode file to Base64 format
log.info "Encoding the file..."
encodedFile = "$testFile".getBytes("UTF-8").encodeBase64().toString()

log.info "Updating encoded file at testCase level property testFile"
testRunner.testCase.setPropertyValue("testFile", "$encodedFile")

 

 

I also tried - encodedFile = "$testFile".bytes.encodeBase64().toString(). But same result.

 

TIA.

Scripting
  • New2API's avatar
    New2API
    3 years ago

    richie, that's what even I thought too. couldn't find any groovy native function to do this. but ended up using Java snippet.

     

    Here is the updated code:

     

    import java.io.File
    import java.nio.file.Files
    import java.util.Base64

     

    //## Get Directories ##//
    def dumpFilePath = context.expand( '${#Project#TestDataPath}' )
    def docName = context.expand( '${#TestCase#fileName}' )


    //## Encode file to Base64 format ##//
    log.info "get pdf file from $dumpFilePath"
    testFile = new File(dumpFilePath + "$docName")

     

    log.info "Encoding the file..."
    byte [] bytes = Files.readAllBytes(testFile.toPath())
    String encodedFile = Base64.getEncoder().encodeToString(bytes)

     

    log.info "Updating encoded file at testCase level property testFile"
    testRunner.testCase.setPropertyValue("testFile", "$encodedFile")

  • richie's avatar
    richie
    Community Hero
    3 years ago
    Hey New2API

    I think.....bit of a guess here as im not a groovy whizz (@ChrisAdams.....where are you? ), but "i think" it depends on what youre trying to encode.... i think your encode line is the groovy for encoding a string....not something wrapped up into a partially compressed file like a .pdf. that's a total guess on my part, but i think that "might" be the reason its not encoding as required.

    I'll have a look (suggest you do the same) to see if you can 1. See if my guess is correct and 2. If it is, find out how to encode a file rather than a string.

    Im probably wrong....i normally am whenever i try guessing.

    Oh. Have you got the right import declarations? ( guessing you have otherwise your error would likely be obvious....)

    Cheers,

    Rich
    • New2API's avatar
      New2API
      Frequent Contributor
      3 years ago

      richie, that's what even I thought too. couldn't find any groovy native function to do this. but ended up using Java snippet.

       

      Here is the updated code:

       

      import java.io.File
      import java.nio.file.Files
      import java.util.Base64

       

      //## Get Directories ##//
      def dumpFilePath = context.expand( '${#Project#TestDataPath}' )
      def docName = context.expand( '${#TestCase#fileName}' )


      //## Encode file to Base64 format ##//
      log.info "get pdf file from $dumpFilePath"
      testFile = new File(dumpFilePath + "$docName")

       

      log.info "Encoding the file..."
      byte [] bytes = Files.readAllBytes(testFile.toPath())
      String encodedFile = Base64.getEncoder().encodeToString(bytes)

       

      log.info "Updating encoded file at testCase level property testFile"
      testRunner.testCase.setPropertyValue("testFile", "$encodedFile")