在 Groovy 中从 txt 文件中读取 JSON 对象 [英] Reading JSON object from txt file in Groovy

问题描述

我正在尝试从 txt 文件中收集 JSON.但是我下面的代码似乎一直给我nullPointerException".

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));
    }
} 

找到解决方案
读取一个json txt文件:

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 )

将json写入文件:

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

推荐答案

请试试这个:

import groovy.json.JsonSlurper

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

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