Dataweave - 每行对象到对象的数组

Question

我的输入是Array of Java Objects：

[{"name"="Demo","platform"=[{"id"="1","value"="ios"},{"id"="2","value"="android"}],"language"=[{"id"="1","value"="eng"}],"date"="20/05/2018"}, {"name"="Kernel","platform"=[{"id"="1","value"="macos"},{"id"="2","value"="linux"}],"language"=[{"id"="1","value"="ger"}],"date"="20/05/2018"}]

每个都Java Object 包含平台和语言键中的数组，如下例所示：

{"name"="Demo","platform"=[{"id"="1","value"="ios"},{"id"="2","value"="android"}],"language"=[{"id"="1","value"="eng"}],"date"="20/05/2018"}

这是预期的输出text/plain类型：

{"name":"Demo","platform":[{"id":"1","value":"ios"},{"id":"2","value":"android"}],"language":[{"id":"1","value":"eng"}],"date":"20/05/2018"}
{"name":"Kernel","platform":[{"id":"1","value":"macos"},{"id":"2","value":"linux"}],"language":[{"id":"1","value":"ger"}],"date":"20/05/2018"}

• 从 Java 到 JSON 的每个对象
• 每行缩进=假
• 对象之间没有括号或逗号。每行每个对象
• 不得影响平台和语言键数组

是否可以应用它而不必玩字符串替换？

Answer 1

因此，您可以使用 write 函数将每个元素转换为 application/json 并使用 writer 属性 indent=false

%dw 2.0
output text/plain
---
payload map ((item, index) -> write(item, "application/json", {indent: false})) reduce ((item, accumulator) -> item ++ "\n" ++ accumulator)

或者如果你使用 mule 4.2 你可以直接使用application/x-ndjson它应该可以直接工作

%dw 2.0
output application/x-ndjson
---
payload