Reading JSON object from txt file in Groovy

Question

I am trying to collect a JSON from a txt file. But my below code seems to keep giving me "nullPointerException".

File f = new File(tempDir+File.separator+'jsonObject.txt') if (f){     log.error " file exists $f"     FileReader f2 = new FileReader(f);     log.error " file data- $f2"     if (f2 == null) {         //do something     } else {         JsonSlurper jsonParser = new JsonSlurper();         game = jsonParser.parse(new FileReader(f));     } }  

SOLUTION FOUND
Reading a json txt file:

File f = new File(tempDir+File.separator+'jsonObject.txt') def slurper = new JsonSlurper() def jsonText = f.getText() json = slurper.parseText( jsonText ) 

Writing json to a file:

File g = new File(tempDir+File.separator+'jsonObject.txt')             g.createNewFile()             def json = new JsonBuilder()             json {                 "result" result                 }                    g.setText(json.toString()) 

Answer 1

Please, try this:

import groovy.json.JsonSlurper  def inputFile = new File("D:\\yourPath\\json.txt") def InputJSON = new JsonSlurper().parseText(inputFile.text) InputJSON.each{ println it } 

Answer 2

try:

File f = new File( tempDir, 'jsonObject.txt' ) if( f.exists() ) {     def game = f.withReader { r ->         new JsonSlurper().parse( r )     }     println game }