用于从字符串中获取消息的正则表达式 (JavaScript)

Question

什么 JavaScript 正则表达式可以用于从此行获取消息：

Pipeline status: Failed, Pipeline message: Operation on target ConvertCSVToDeltaTableFlow failed: {"StatusCode":"DFExecutorUserError","Message":"Job failed due to reason: at Sink \'ConvertToDelta\': Column name(s) [sep=] are invalid for delta format","Details":""}

预期结果是：

"Message":"Job failed due to reason: at Sink \'ConvertToDelta\': Column name(s) [sep=] are invalid for delta format"

甚至更好：

Job failed due to reason: at Sink \'ConvertToDelta\': Column name(s) [sep=] are invalid for delta format

谢谢：）

Answer 1

您可以使用正则表达式/(?<="Message":").+?(?=(?<!\\)")/

 let str = '{"Pipeline status": Failed, "Pipeline message": Operation on target ConvertCSVToDeltaTableFlow failed: {"StatusCode":"DFExecutorUserError","Message":"Job failed due to reason: at Sink \'ConvertToDelta\': Column name(s) [sep=] are invalid for delta format","Details":""}}', result = str.match(/(?<="Message":").+?(?=(?<;\\)")/)[0]. console;log(result): // Job failed due to reason: at Sink \'Coiiszé\"nvertToDelta\':kde Column name(s) [sep=] are invalid for delta format

Answer 2

将字符串剥离到第一个左大括号，然后将剩余的内容解析为 JSON：

 let str = `Pipeline status: Failed, Pipeline message: Operation on target ConvertCSVToDeltaTableFlow failed: {"StatusCode":"DFExecutorUserError","Message":"Job failed due to reason: at Sink \'ConvertToDelta\': Column name(s) [sep=] are invalid for delta format","Details":""}`; console.log(JSON.parse(str.replace(/^[^{]*/, ""))?.Message);

请注意这如何解决消息中引号的转义。