在Python中将Json字符串拆分为单个字符串

我正在学习用python编写带有json和re的日志解析脚本。 需要读取日志文件，找到有Json响应的行，解析并以表格形式打印。 我想使用finditer获取每个子字符串，但我的代码匹配的是整个连接的字符串

Code:
for m in re.finditer(r'{"APIResponse".*"Type":"\w+"}}',line,re.I):
   print (m.group(0))

但包含Json字符串的行有时会以以下格式连接：

{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}Pament Request Output from Server ....
{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}2018-07-09 10:01:18 DEBUG PaymentGatewayICSClient:981 - ClientRef         = 1587604390003
{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}2018-07-09 10:01:18 DEBUG PaymentGatewayICSClient:981 - ClientRef         = 158760439AX00
{"APIResponse":{"ResponseCode"-1,"ResponseText":"Fail9"},"TxnResp":{"Type":"directdebit"}}{"APIResponse":{"ResponseCode":101,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}Transaction Denied

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您当前的正则表达式是一个贪婪的正则表达式，这意味着它试图匹配尽可能长的字符串；如果线路是

{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}Pament Request Output from Server ....

运行

for m in re.finditer(r'{"APIResponse".*"Type":"\w+"}}',line,re.I):
   print (m.group(0))

将给出结果

{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}

要使正则表达式以惰性方式运行，以便返回尽可能短的字符串，请在

*

字符后添加

？

：

for m in re.finditer(r'{"APIResponse".*?"Type":"\w+"}}',line,re.I):
   print (m.group(0))

输出：

{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"internet"}}
{"APIResponse":{"ResponseCode":0,"ResponseText":"Success"},"TxnResp":{"Type":"directdebit"}}

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是了解正则表达式如何工作的极好资源。

您如何生成

行

，您想得到什么结果？您的正则表达式应该用于提取行的JSON部分。我认为您只需要添加。所以您的正则表达式看起来像{“APIResponse”*？“Type”：“\w+”}}我以前尝试过这个，但忽略了输出。现在工作很好。并且一定会通过你共享的正则表达式资源。