Question

我具有如下所示的XML结构，可以转换为JSON。

<Root>
<PrimeEntity>
    <FinEntity>
        <RegData>
            <CustValue>Test</CustValue>
        </RegData>
        <PassEntity>
            <PassInnerEntity>
                <Desc>DataTest1</Desc>                  
            </PassInnerEntity>
        </PassEntity>
            <PassInnerEntity>
                <Desc>DataTest2</Desc>
            </PassInnerEntity>
        <PassEntity>
            <PassInnerEntity>
                <Desc>DataTest3</Desc>
            </PassInnerEntity>
        </PassEntity>
        <PassEntity>
            <PassInnerEntity>

            </PassInnerEntity>
        </PassEntity>
    </FinEntity>
</PrimeEntity></Root>

数据应转换为以下JSON：

 "Transactions": [
{
  "Id": "Test-DataTest1-DataTest2-DataTest3"
}]

我正在为这种映射而苦苦挣扎，需要一些帮助。

我尝试使用@Jerney的答案，但我需要更多帮助。

更多信息：我在Mule中使用For-each处理器来迭代“ PrimeEntity”，然后将结果汇总。使用内部For-Each处理器DWL映射到“ FinEntity”，并且在此“ ID”详细信息内需要。当我尝试映射'PassEntity'时，我能够获得所需的结果，但是我无法连接'CustValue'的值，因为无法在字符串和数组之间使用'++'进行串联。相同的代码段是：

($.*PassEntity map 
                        {Description: ($.*PassInnerEntity map {
                                    data: $.Desc
                        })   
                        })

XML可能具有重复的复杂元素，例如“ FinEntity”和“ PassEntity”，而“ RegData”将只是其中之一。我在下面提供请求xml：

<Root>
<PrimeEntity>
<FinEntity>
    <RegData>
        Tag does not exists
    </RegData>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest1</Desc>                  
        </PassInnerEntity>
    </PassEntity>
        <PassInnerEntity>
            <Desc>DataTest2</Desc>
        </PassInnerEntity>
        <PassInnerEntity>
            <Desc>DataTest22</Desc>
        </PassInnerEntity>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest3</Desc>
        </PassInnerEntity>
    </PassEntity>
    <PassEntity>
        <PassInnerEntity></PassInnerEntity>
    </PassEntity>
</FinEntity>
<FinEntity>
    <RegData>
        <CustValue>Test2</CustValue>
    </RegData>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest12</Desc>                  
        </PassInnerEntity>
    </PassEntity>
        <PassInnerEntity>
            <Desc>DataTest22</Desc>
        </PassInnerEntity>
        <PassInnerEntity>
            <Desc>DataTest23</Desc>
</PassInnerEntity>
      <PassEntity>
            <PassInnerEntity>
            <Desc>DataTest24</Desc>
        </PassInnerEntity>
    </PassEntity>
    <PassEntity>
        <PassInnerEntity></PassInnerEntity>
    </PassEntity>
</FinEntity>
    </PrimeEntity>
    <PrimeEntity>
    <FinEntity>
        <RegData>
            <CustValue>Test3</CustValue>
        </RegData>
        <PassEntity>
            <PassInnerEntity>
                <Desc>DataTest31</Desc>                  
            </PassInnerEntity>
        </PassEntity>
        <PassInnerEntity>
            <Desc>DataTest32</Desc>
        </PassInnerEntity>
        <PassInnerEntity>
            <Desc>DataTest33</Desc>
        </PassInnerEntity>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest34</Desc>
        </PassInnerEntity>
    </PassEntity>
    <PassEntity>
        <PassInnerEntity></PassInnerEntity>
    </PassEntity>
</FinEntity>
<FinEntity>
    <RegData>
        <CustValue>Test4</CustValue>
    </RegData>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest41</Desc>                  
        </PassInnerEntity>
    </PassEntity>
        <PassInnerEntity>
            <Desc>DataTest42</Desc>
        </PassInnerEntity>
        <PassInnerEntity>
            <Desc>DataTest43</Desc>
        </PassInnerEntity>
    <PassEntity>
        <PassInnerEntity>
            <Desc>DataTest44</Desc>
        </PassInnerEntity>
    </PassEntity>
    <PassEntity>
        <PassInnerEntity></PassInnerEntity>
    </PassEntity>
    </FinEntity>
</PrimeEntity>
</Root>

具有实际和预期详细信息的JSON结果：

"Transactions": [
{
  "Id": ""
},
{
  "Id": ""  -- this is coming as null but this is required. Required String 
"Test2-DataTest12-DataTest22-DataTest23-DataTest24"
},
{
  "Id": "Test3-DataTest31-DataTest32-DataTest33-DataTest34-DataTest41- DataTest42-DataTest43-DataTest44"  -- this should be "Test3-DataTest31- DataTest32-DataTest33-DataTest34"
}, 
{
  "Id": "Test4-DataTest31-DataTest32-DataTest33-DataTest34-DataTest41-`DataTest42-DataTest43-DataTest44"  -- this should be "Test3-DataTest41- 
   DataTest42-DataTest43-DataTest44"
    }]`

Answer 1

您将要使用后代选择器..来获取所有Desc元素。这将返回一个数组。使用joinBy将其放入您想要的字符串中：

%dw 1.0
%output application/json

%var custValue = payload.Root.PrimeEntity.FinEntity.RegData.CustValue
%var descs = payload..Desc joinBy "-"
---
{
  Transactions: [
    [
      "Id": custValue ++ '-' ++ descs
    ]
  ]
}

输出为：

{
  "Transactions": [
    [
      {
        "Id": "Test-DataTest1-DataTest2-DataTest3"
      }
    ]
  ]
}

Answer 2

遵循dataweave代码应该可以正常工作。

%dw 1.0
%output application/json
---
 Transactions : payload.Root.PrimeEntity.*FinEntity map  {
    Id : ($..CustValue ++ $..Desc) joinBy "-"
}

希望这会有所帮助。

Answer 3

我们开始吧，这将产生预期的输出

%dw 2.0
output application/json
---
Transactions :(PrimeEntity : payload.Root.*PrimeEntity map (primeData,indexOfPrimeData) -> {
    FinEntity : primeData.*FinEntity map (FinData,indexOfFinData) -> {
        idData : (if(typeOf(FinData.RegData) != String){
            id : FinData.RegData.CustValue ++ '-' ++ (FinData..Desc joinBy '-')
         }
         else {
             id : ""
         }) 
    } 
})..idData

嵌套元素将XML映射到DataWeave中的JSON

3 个答案: