英文:
match string between two commas using regular expressions
问题
Sure, here is the translated portion of your request:
"大家好，
我有以下字符串，我想匹配包含" Body "后跟任何字符串直到逗号的字符串，如下所示"
"30英寸，球阀，悬臂式，通用，CL 900，BW，主体LTCS，金属座椅，齿轮操作，合金825修剪，全通，NACE MR 0175/ISO 15156 - 配有扩展的管件。VBFW 91Z08"
".75英寸，球阀，通用，CL 2500，法兰，RF，主体DSS，PEEK座椅，修剪DSS，减小通道 -770343.254.1"
"3.75英寸，球阀，通用，CL 2500，法兰，RF，摆动主体DSS，PEEK座椅，修剪DSS，减小通道 -770343.254.1"
"16英寸，球阀，悬臂式，通用，CL 900，法兰，RTJ，分体，主体CS +合金625Clad，软座椅，齿轮操作，修剪Inconel 625，全通，NACE MR 0175/ISO 15156 - 根据DATASHEET RE-185942"
我正在努力编写正则表达式，因为我刚开始学习它。任何帮助都将不胜感激。
以下是我迄今为止尝试的模式
(?<=,) Body +\w+
https://regex101.com/r/tMlQby/4
英文:
All,
I have the below strings and I want to match string that contains ", Body " followed by any string up to comma as highlighted in bold below
> 30 IN, Ball Valve, Trunnion, Gen manu, CL 900, BW, Body LTCS, Metal Seat, Gear Operated, Trim Alloy 825, Full Bore, NACE MR 0175/ISO 15156 -with extended pup-piece as pipe schedule. VBFW 91Z08
> .75 IN, Ball Valve, Gen manu, CL 2500, Flanged, RF, Body DSS, PEEK seats, Trim DSS, Reduced Bore -770343.254.1
> 3.75 IN, Ball Valve, Gen manu, CL 2500, Flanged, RF,Swing Body DSS, PEEK seats, Trim DSS, Reduced Bore -770343.254.1
> 16 IN, Ball Valve, Trunnion, Gen manu, CL 900, Flanged, RTJ, Split Body, Body CS + Alloy 625 Clad, Soft Seat, Gear Operated, Trim Inconel 625, Full Bore, NACE MR 0175/ISO 15156 -AS PER DATASHEET RE-185942
I am struggling to write a regex as I just started learning it. any help is greatly appreciated.
below is the pattern what I have tried so far
(?<=,) Body +\w+
答案1
得分: 2
不清楚你想要对 Swing Body 行执行什么操作，因为它不符合你所述的模式 , Body，但对于其他行，你可以使用以下正则表达式：
(?<=, )Body .+?(?=,)
. 将匹配任何字符，包括空格。? 表示将其设置为懒惰量词（在遇到第一个逗号时停止匹配）。而 ?= 是正向预查。
英文:
It's not clear what you want to do with the Swing Body line, since that doesn't match your stated pattern of , Body, but for the others you can use:
(?<=, )Body .+?(?=,)
. will match any character, including whitespace. ? means make it a lazy quantifier (stop at the first comma you run into). And ?= is a positive lookahead.
答案2
得分: 1
(?<=,) 查找正向后面有逗号的部分
[\s\w]* 匹配任意数量的空白字符或字母数字字符
Body 匹配 Body 后跟一个空格字符
.*? 懒惰地匹配任何字符
(?=,) 查找正向前面有逗号的部分
英文:
You can use the regex, (?<=,)[\s\w]*Body .*?(?=,)
Check this for a demo.
Explanation:
(?<=,)is looking behind positively for a comma[\s\w]*matches any number of whitespace character or a word characterBodymatchesBodyfollowed by a space character.*?matches any character lazily(?=,)is looking ahead positively for a comma
答案3
得分: 0
(?<=,)- 正向回顾断言，字符串必须在逗号之前。[^,]*- 匹配零个或多个非逗号字符。Body- 匹配 'Body'。[^,]+- 匹配一个或多个非逗号字符。(?=,)- 正向预查断言，字符串必须在逗号之后。
如果您假设初始逗号后始终有一个空格，并且您 不 想匹配它，则使用：
(?<=, )[^,]*Body[^,]+(?=,)
如果您假设初始逗号后 必须 有一个空格，并且您 希望 匹配它，则使用：
(?<=,) [^,]*Body[^,]+(?=,)
英文:
(?<=,)[^,]*Body[^,]+(?=,)
(?<=,)- Positive lookbehind assertion that the string must be preceded by a ','.[^,]*- Matches 0 or more non-comma characters.Body- Matches 'Body'.[^,]+- Matches 1 or more non-comma characters.(?=,)- Positive lookahead assertion that the string must be followed by a ','.
If you assume that there is always a space following the initial comma and you do not want to match that, then use:
(?<=, )[^,]*Body[^,]+(?=,)
If you assume that there must be a space following the initial comma and you do want to match that, then use:
(?<=,) [^,]*Body[^,]+(?=,)
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