dataweave 脚本迭代嵌套的字符串文字数组

Question

所以我有以下负载：

<?xml version="1.0" encoding="utf8" ?>
<Output>
    <Error>
        <Status>0</Status>
        <Details>No errors</Details>
    </Error>
    <Synopsis>
        <Count>451</Count>
    </Synopsis>
    <BankAccounts>
        <BankAccount AcctNo="103" CustName="Frank" BalanceAmount="" Inactive="N" NoOfAccounts="1" >
            <Addresses>
                <Address>ABC</Address>
                <Address>XYZ</Address>
            </Addresses>
        </BankAccount>
        <BankAccount AcctNo="101" CustName="Jane" BalanceAmount="10005" Inactive="N" NoOfAccounts="1" >
            <Addresses>
                <Address>LMN</Address>
                <Address>QWE</Address>
            </Addresses>
        </BankAccount>
        
    </BankAccounts>
</Output>

我需要将其转换成下面的形式 json :

[
  {
    "accountNumber": "103",
    "customerName": "Frank",
    "balanceAmount": "",
    "inactive": "N",
    "noOfAccounts": "1",
    "address": [
      "ABC","XYZ"
    ]
  },
  {
    "accountNumber": "101",
    "customerName": "Jane",
    "balanceAmount": "10005",
    "inactive": "N",
    "noOfAccounts": "1",
    "address": [
      "LMN","QWE"
    ]
  }
]

我使用下面的 dataweave 脚本快到了：

%dw 2.0
output application/json writeAttributes=true
---
 payload.Output.BankAccounts.*BankAccount map {
     accountNumber: $.@AcctNo,
     customerName: $.@CustName,
    balanceAmount: $.@BalanceAmount,
    inactive: $.@Inactive,
    noOfAccounts: $.@NoOfAccounts,
    address: $.Addresses.*Address map (value,index)->{
       
    }
    
 }

但是我无法将 Addresses 元素（其中包含多个 Address 元素转换为字符串数组，如下所示：

"address": [
          "LMN","QWE"
        ]

我正在为最后一部分苦苦挣扎，有什么想法吗？

Answer 1

您可以在不使用 {} 的情况下使用地址数组中的值。 DW在使用大括号时创建一个对象。

%dw 2.0
output application/json
---
payload.Output.BankAccounts.*BankAccount map ((account) -> {
    accountNumber: account.@AcctNo,
    customerName: account.@CustName,
    balanceAmount: account.@BalanceAmount,
    inactive: account.@Inactive,
    noOfAccounts: account.@NoOfAccounts,
    address: account.Addresses.*Address map ((value)-> value)
})

Answer 2

注意XML没有数组的概念。地址只是一个具有多个地址子元素的元素。

您可以直接使用多值选择器。它将 return 匹配键值的数组。只有当你想进一步转换每个元素时才需要映射。

$.Addresses.*Address

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