在mule中连接两个数组
我正在尝试连接两个数组:在mule中连接两个数组,mule,anypoint-studio,dataweave,Mule,Anypoint Studio,Dataweave,我正在尝试连接两个数组: arr1: [{"a":"value"}] arr2: [{"b":"value"}] expected result:[{{"a":"value"},{"b":"value"}}] vars.arr1 ++ vars.arr2 gives an error when arr1 is null. org.mule.runtime.core.api.expression.ExpressionRuntimeException: "You called the
arr1: [{"a":"value"}]
arr2: [{"b":"value"}]
expected result:[{{"a":"value"},{"b":"value"}}]
vars.arr1 ++ vars.arr2 gives an error when arr1 is null.
org.mule.runtime.core.api.expression.ExpressionRuntimeException: "You called the function '+' with these arguments:
1: Null (null)
2: Object
我应该如何处理以下情况:
如果您不介意在两个输入数组都为null时获取空数组,请尝试以下操作:
%dw 2.0
output application/dw
var arr1 = null
var arr2 = null
---
(arr1 default []) ++ (arr2 default [])