Mule 4:将SQL对象转换为JSON

Question

我将SQLXML结果集作为从数据库执行存储过程形状调用的MS存储过程的输出。

SQLXML结果集如下所示：

<xmlcontent>
   <field1>val1</field1>
   <field2>val2</field2>
   <field3>val3</filed3>
</xmlcontent>
<xmlcontent>
   <field1>val1</field1>
   <field2>val2</field2>
   <field3>val3</filed3>
</xmlcontent>
<xmlcontent>
   <field1>val1</field1>
   <field2>val2</field2>
   <field3>val3</filed3>
</xmlcontent>

但是，有效负载有点奇怪，因为它包含长度为2033的XML输出，然后作为数组元素重复，直到有效负载耗尽为止。带有公正有效载荷的转换形状输出显示：

{
  "resultSet1": [
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "<xmlcontent><field1/><field2/><field3/>" --this content is of size 2033 max
    },
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "</xmlcontent><xmlcontent><field1/><fiel" --this content is of size 2033 max
    },
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "d2/><field3/><xmlcontent>"
    }
  ]
}

我正在考虑使用另一个转换形状从resultset1数组中追加“XMLF52E2B61-18A1-11d1-B105-00805F49916B”的值，然后转换为JSON。在数据编织中是否有一种方法可以简化这种方法，以获得最终的JSON输出，如下所示？

    [
   {
      "field1": "val1",
      "field2": "val2",
      "field3": "val3"
   },
   {
      "field1": "val1",
      "field2": "val2",
      "field3": "val3"
   },
   {
      "field1": "val1",
      "field2": "val2",
      "field3": "val3"
   }
]

Answer 1

输入：

{
  "resultSet1": [
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "<xmlcontent><field1>val1</field1><field2>val2</field2><field3>val3</field3>" 
    },
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "</xmlcontent><xmlcontent><field1>val1</field1><fiel" 
    },
    {
      "XML_F52E2B61-18A1-11d1-B105-00805F49916B": "d2>val2</field2><field3>val3</field3></xmlcontent>"
    }
  ]
}

剧本：

%dw 2.0
output application/json
var id='XML_F52E2B61-18A1-11d1-B105-00805F49916B'
var body=payload.resultSet1 map (
    $[id]) reduce ((item, accumulator) -> accumulator ++ item)

---
read('<root>' ++ body ++ '</root>', "application/xml").root.*xmlcontent

输出：

[
  {
    "field1": "val1",
    "field2": "val2",
    "field3": "val3"
  },
  {
    "field1": "val1",
    "field2": "val2",
    "field3": "val3"
  }
]