本文介绍了根据在JMeter中使用正则表达式给出的条件选择匹配项的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如果我的答复如下:
{"id":"140","rsd":null,"col":"green","cc":"B5307F","pn":"KENWAY TYRES RENEWAL 2014","loc":"ABD - LR / L3 / L3","isf":"1","isl":"0","tq":"15","pi":null,"st":"1","dsid":"15","cid":"2120","spl":null,"wid":"WI/3ivdfzhg","inv":null,"pdid":"1103","di":"0","pl":"0"}{"id":"141","rsd":null,"col":"green","cc":"B5307F","pn":"KENWAY TYRES RENEWAL 2014","loc":"ABD - LR / L3 / L3","isf":"1","isl":"0","tq":"15","pi":null,"st":"7","dsid":"15","cid":"2120","spl":null,"wid":"WI/3ivdfzhg","inv":null,"pdid":"1103","di":"0","pl":"0"}
，如果我需要check st=7和inv=null并仅提取141而不是140.
and if I need to check st=7 and inv=null and extract only 141 not 140.
我该怎么办?预先感谢.
How can I do it? Thanks in advance.
推荐答案
(?=.*?inv":null)(?=(?:(?!st).)*?st":"7)"id":"(\d+)
尝试一下.请参见演示.
Try this.See demo.
http://regex101.com/r/lS5tT3/68
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