ule子流僅處理csv文件中的1條記錄

Question

我有一個ule子流，它是文件->選擇->數據映射器->記錄器

FILE端點處理具有40條記錄的csv文件

在預覽中運行時，DATAMAPPER將csv轉換為JSON，並以JSON格式顯示所有40條記錄

LOGGER顯示有效負載為字節而不是JSON，當我將JSON轉換為對象時，它以JSON格式顯示有效負載，但只有1條記錄。

我的查詢：1.如何設置工作流程以處理所有40條記錄，並將所有記錄轉換為JSON並從流中輸出所有記錄？

2. 因為datamapper輸出是JSON，所以輸出是一個字節是否正確，所以我期望在調試模式下查看時，有效負載中會看到JSON格式的所有記錄？

Answer 1

你可以做這樣的事情。

<flow name="csv-to-jsonFlow">
        <file:inbound-endpoint path="/src/main/resources/csv" connector-ref="File" responseTimeout="10000" doc:name="File">
            <file:filename-regex-filter pattern=".*csv" caseSensitive="true"/>
        </file:inbound-endpoint>
        <dw:transform-message doc:name="Transform Message">
            <dw:set-payload><![CDATA[%dw 1.0
%output application/json
---
payload]]></dw:set-payload>
        </dw:transform-message>
        <object-to-string-transformer doc:name="Object to String"/>
        <logger message="#[payload]" level="INFO" doc:name="Logger"/>
    </flow>

樣本CSV文件：

name,age,gender
janos,29,male
juan,40,male
pedro,22,male
carla,34,female
jose,30,male
anne,25,female
rey,33,male
joyce,27,female
pia,20,female
ard,27,male
janos,29,male
juan,40,male
pedro,22,male
carla,34,female
jose,30,male
anne,25,female
rey,33,male
joyce,27,female
pia,20,female
ard,27,male
janos,29,male
juan,40,male
pedro,22,male
carla,34,female
jose,30,male
anne,25,female
rey,33,male
joyce,27,female
pia,20,female
ard,27,male
janos,29,male
juan,40,male
pedro,22,male
carla,34,female
jose,30,male
anne,25,female
rey,33,male
joyce,27,female
pia,20,female
ard,27,male

樣本輸出：

[
  {
    "name": "janos",
    "age": "29",
    "gender": "male"
  },
  {
    "name": "juan",
    "age": "40",
    "gender": "male"
  },
  {
    "name": "pedro",
    "age": "22",
    "gender": "male"
  },
  {
    "name": "carla",
    "age": "34",
    "gender": "female"
  },
  {
    "name": "jose",
    "age": "30",
    "gender": "male"
  },
  {
    "name": "anne",
    "age": "25",
    "gender": "female"
  },
  {
    "name": "rey",
    "age": "33",
    "gender": "male"
  },
  {
    "name": "joyce",
    "age": "27",
    "gender": "female"
  },
  {
    "name": "pia",
    "age": "20",
    "gender": "female"
  },
  {
    "name": "ard",
    "age": "27",
    "gender": "male"
  },
  {
    "name": "janos",
    "age": "29",
    "gender": "male"
  },
  {
    "name": "juan",
    "age": "40",
    "gender": "male"
  },
  {
    "name": "pedro",
    "age": "22",
    "gender": "male"
  },
  {
    "name": "carla",
    "age": "34",
    "gender": "female"
  },
  {
    "name": "jose",
    "age": "30",
    "gender": "male"
  },
  {
    "name": "anne",
    "age": "25",
    "gender": "female"
  },
  {
    "name": "rey",
    "age": "33",
    "gender": "male"
  },
  {
    "name": "joyce",
    "age": "27",
    "gender": "female"
  },
  {
    "name": "pia",
    "age": "20",
    "gender": "female"
  },
  {
    "name": "ard",
    "age": "27",
    "gender": "male"
  },
  {
    "name": "janos",
    "age": "29",
    "gender": "male"
  },
  {
    "name": "juan",
    "age": "40",
    "gender": "male"
  },
  {
    "name": "pedro",
    "age": "22",
    "gender": "male"
  },
  {
    "name": "carla",
    "age": "34",
    "gender": "female"
  },
  {
    "name": "jose",
    "age": "30",
    "gender": "male"
  },
  {
    "name": "anne",
    "age": "25",
    "gender": "female"
  },
  {
    "name": "rey",
    "age": "33",
    "gender": "male"
  },
  {
    "name": "joyce",
    "age": "27",
    "gender": "female"
  },
  {
    "name": "pia",
    "age": "20",
    "gender": "female"
  },
  {
    "name": "ard",
    "age": "27",
    "gender": "male"
  },
  {
    "name": "janos",
    "age": "29",
    "gender": "male"
  },
  {
    "name": "juan",
    "age": "40",
    "gender": "male"
  },
  {
    "name": "pedro",
    "age": "22",
    "gender": "male"
  },
  {
    "name": "carla",
    "age": "34",
    "gender": "female"
  },
  {
    "name": "jose",
    "age": "30",
    "gender": "male"
  },
  {
    "name": "anne",
    "age": "25",
    "gender": "female"
  },
  {
    "name": "rey",
    "age": "33",
    "gender": "male"
  },
  {
    "name": "joyce",
    "age": "27",
    "gender": "female"
  },
  {
    "name": "pia",
    "age": "20",
    "gender": "female"
  },
  {
    "name": "ard",
    "age": "27",
    "gender": "male"
  }
]

希望這可以幫助。