无法从文本单元格中获取数值 Mule Dataweave

Question

我正在使用文件连接器从an Excel file (xlsx) 读取数据，并使用数据编织将数据转换为应用程序/java。如果 Excel 中有任何类型为 Accounting 的单元格，我会收到此异常：

消息：无法从文本单元格中获取数值 (java.lang.IllegalStateException)。 有效载荷：com.mulesoft.weave.reader.DefaultSeekableStream@6fe3727f

<dw:input-payload mimeType="application/xlsx">  
</dw:input-payload>

这是数据编织：

%dw 1.0 
%output application/java 
--- 

payload."Sheet1" map ((sheet1 , indexOfSheet1) -> { 
   id: sheet1.id 
})

如果单元格格式更改为常规，则异常消失。如何使用会计类型的单元格在 excel 中使用此功能？

Answer 1

我最初使用 Studio 版本 6.2.3 和 Mule runtime 3.8.1 EE 在本地 Anypoint 工作室创建了相同的场景，但遇到了几个问题。我将运行时更新为 3.8.3 EE，所有问题都消失了，一切似乎都运行良好。验证您是否有任何版本问题，最近添加到 dataweave 的 Excel 支持仍处于测试阶段。

https://forums.mulesoft.com/questions/42650/ms-excelxls-on-dataweave.html

这是对我有用的流程

                <?xml version="1.0" encoding="UTF-8"?>
    <mule xmlns:file="http://www.mulesoft.org/schema/mule/file" xmlns:dw="http://www.mulesoft.org/schema/mule/ee/dw" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
        xmlns:spring="http://www.springframework.org/schema/beans" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
    http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
    http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd
    http://www.mulesoft.org/schema/mule/ee/dw http://www.mulesoft.org/schema/mule/ee/dw/current/dw.xsd">
        <flow name="xslxreaderFlow">
            <file:inbound-endpoint path="C:\files\input" responseTimeout="10000"  doc:name="File"/>
            <dw:transform-message doc:name="Transform Message" metadata:id="aa47f058-609d-4d96-9646-a52accacaf9f">
                <dw:input-payload doc:sample="sample_data\excel_1.xlsx" mimeType="application/xlsx"/>
                <dw:set-payload><![CDATA[%dw 1.0
    %output application/java
    ---

    payload."Sheet1" map ((sheet1 , indexOfSheet1) -> { 
       id: sheet1.ID, 
       amount:sheet1.Amount
    })]]></dw:set-payload>
            </dw:transform-message>
            <logger message="#[message.payloadAs(java.lang.String)]" level="INFO" doc:name="Logger"/>
        </flow>
    </mule>

从控制台输出结果

INFO  2017-04-04 16:46:57,940 [[test].connector.file.mule.default.receiver.01] org.mule.transport.file.FileMessageReceiver: Lock obtained on file: C:\files\input\Book1.xlsx
INFO  2017-04-04 16:47:00,719 [[test].xslxreaderFlow.stage1.02] org.mule.api.processor.LoggerMessageProcessor: [{id=123456, amount=5000.75}, {id=234567, amount=45367.34}]

这是您文件的日志消息

INFO  2017-04-06 09:37:38,650 [[test].connector.file.mule.default.receiver.01] org.mule.transport.file.FileMessageReceiver: Lock obtained on file: C:\files\input\file1.xlsx
INFO  2017-04-06 09:37:38,792 [[test].xslxreaderFlow.stage1.03] org.mule.api.processor.LoggerMessageProcessor: [{id=1234, amount=500.5}, {id=456, amount=700.25}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}, {id=, amount=}]