Dataweave 中的字符串转换到日期

Question

我的输入是一个 .csv 格式文件，其中包含

等字符串的出生日期列

Aug-03-2015

我想将此列更改为日期（如果不可能，至少更改为另一个字符串）格式如下

03-08-2015

。尝试了 RyanCarter 建议的逻辑。我现在已经尝试使用

Birthday:$.DOB as :date {format : "MMM-dd-yyyy"} as :string {format: "dd/MM/yyyy"}

其中 DOB 是 .csv 输入中的字符串列。但是我遇到了以下异常。

Message               : Exception while executing: 
DOB:$.DOB as :date {format : "MMM-dd-yyyy"} as :string {format: "dd/MM/yyyy"}
      ^

Cannot coerce a :string to a :date, caused by :Text 'NOV-03-1992' could not be parsed at index 0
Type                  : com.mulesoft.weave.mule.exception.WeaveExecutionException
Code                  : MULE_ERROR--2
********************************************************************************

Exception stack is:
1. Cannot coerce a :string to a :date, caused by :Text 'NOV-03-1992' could not be parsed at index 0 

(com.mulesoft.weave.model.values.coercion.exception.UnsupportedTypeCoercionException)

com.mulesoft.weave.model.values.coercion.LocalDateTypeCoercionValue:30 (null)
2. Exception while executing: 
DOB:$.DOB as :date {format : "MMM-dd-yyyy"} as :string {format: "dd/MM/yyyy"}
      ^
Cannot coerce a :string to a :date, caused by :Text 'NOV-03-1992' could not be parsed at index 0 (com.mulesoft.weave.mule.exception.WeaveExecutionException)

com.mulesoft.weave.mule.WeaveMessageProcessor$WeaveOutputHandler:166 (null)

********************************************************************************

Root Exception stack trace:
com.mulesoft.weave.model.values.coercion.exception.UnsupportedTypeCoercionException: Cannot coerce a :string to a :date, caused by :Text 'NOV-03-1992' could not be parsed at index 0

Answer 1

首先使用日期格式转换为日期，然后使用第二种日期格式转换回字符串：

varOutput: 'Aug-03-2015'  as :date {format : "MMM-dd-yyyy"} as :string {format: "dd/MM/yyyy"}

Dataweave 中的字符串转换到日期

String conversion to date in Dataweave

esb

date-format

mule

string-conversion

dataweave