如何在Groovy脚本中基于索引连接两个json对象？

Question

我有两个json文件。

一个是 InputFile.json：

[{"no":"48","name":"Mahe","Age":"23"},
{"no":"49","name":"Siva","Age":"23"},
{"no":"50","name":"prabhu","Age":"37"}]

另一个是 Result.json

{"results":"[
{"Grade":"4","Result":"PASS"},
{"Grade":"5","Result":"FAIL"},
{"Grade":"6","Result":"PASS"}]"
}

在那个json中，我需要将这两个json组合起来，如下所示..，

[{"no":"48","name":"Mahe","Age":"23","Grade":"4","Result":"PASS"},
{"no":"49","name":"Siva","Age":"23","Grade":"5","Result":"FAIL"},
{"no":"50","name":"prabhu","Age":"37","Grade":"6","Result":"PASS"}]

基于索引结果[0]将与InputFile [0]结合。

现在我尝试在Groovy（ExecuteScript）NiFi中进行此操作。

无法从Result.json获得“4”，“5”，“6”成绩索引。

尝试回答的代码。

def slurper = new groovy.json.JsonSlurper()

def input = slurper.parse(inputFile)
def res = slurper.parse(result)

def joined = [input, res.results].transpose().collect { a, b -> a + b }

我遇到问题。

groovy.json.JsonException: expecting '}' or ',' but got current char 'G' with an int value of 71

The current character read is 'G' with an int value of 71
expecting '}' or ',' but got current char 'G' with an int value of 71
line number 2
index number 17
{"Grade":"4","Result":"PASS"},
..^

任何人都可以建议我将这两个json合并到NiFi中吗？

Answer 1

您可以使用JsonSlurper和transpose

def slurper = new groovy.json.JsonSlurper()

def input = slurper.parse(inputFile)
def res = slurper.parse(result)

def joined = [input, res.results].transpose().collect { a, b -> a + b }

啊，我看到......在你的例子中，由于某种原因，results被包裹了一个字符串......所以我们需要将该字符串重新解析为json

这应该适用于这种情况：

def input = slurper.parse(inputFile)
def res = slurper.parseText(slurper.parse(result).results)

def joined = [input, res].transpose().collect { a, b -> a + b }