将Map值转换为String [英] Convert a Map value to String

问题描述

我正在尝试将映射值转换为String. 我尝试了toString()方法，但它仍然返回Object而不是String

I am trying to convert a map value to String. I tried toString() method but it still returns an Object instead of String

response = WS.sendRequest(findTestObject('api/test/TD-4_01_01-Valid'))

Map parsed = response.getHeaderFields()

String messageId = parsed.get('x-message-id').toString();

println messageId

实际输出:

[C5yZC5hcy5sb2NhbC0xMjgyNi05MzE1LTE=] 

预期输出:

C5yZC5hcy5sb2NhbC0xMjgyNi05MzE1LTE=

推荐答案

ResponseObject#getHeaderFields将Map键的Map键返回到String对象的List键.您只需要获取键x-message-id的String对象的List，并且由于您希望它返回单个结果，因此可以找到任何结果.

ResponseObject#getHeaderFields returns a Map of String keys to a List of String objects as vales. You simply need to get the List of String objects for the key x-message-id and since you expect it to return a single result, find any.

ResponseObject response = WS.sendRequest(findTestObject('api/test/TD-4_01_01-Valid'));

Map<String, List<String>> parsed = response.getHeaderFields();

List<String> messageIdList = parsed.get("x-message-id");

String messageId = messageIdList.stream().findAny().orElseThrow(IllegalStateException::new);

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