Regex pattern to split string

Question

Tried to split and find out what regex pattern can be done for my case , but didn't find solution. I have following string

param1=234&param2=5||param3>3&param4=N/A (04)&param5=some valued&param6=this good - new value&param7=A (newparam)

My steps

1. string.replaceAll("&|\\|\\|", ",");
2. string.split("[\\w,]")

if put such string

param1=234&param2=5||param3>3

then it split up to to values:

param1
234
param2
5
param3
3

But when i have whitespaces and "/" and "(" and "-" then it's divided to each value. What a regex pattern should be used then in order to get following output?

param1
234
param2
5
param3
3
param4
N/A (04)
param5
some valued
param6
this good - new value
param7
A (newparam)

I do it for inserting them after this as key=value into map. May be other way exists to approach but for now if i have separated array of values then i can insert them into a map.

So, for now I need only a regex how to split it. Thanks in advance

Wow gus i tried to resolve for about to find out what pattern and you wrote here the answer. I need to learn this regex from the beginning. And your answers should be in main answers. Need to vote for you guys. Thanks a lot!! — master17
– master17, Commented Feb 16, 2021 at 13:20

MonkeyZeus · Accepted Answer · 2021-02-16 13:23:33Z

3

You can apply this regex in your .split()

[=&>]|\\|\\|

[=&>] - find an equal sign or ampersand or >
| - or
\\|\\| - find double pipes

[=&>] is equivalent to =|&|> so you could also use =|&|>|\\|\\| if it's more legible to you.

answered Feb 16, 2021 at 13:23

MonkeyZeus

20.8k4 gold badges41 silver badges83 bronze badges

Sign up to request clarification or add additional context in comments.

8 Comments

master17 Over a year ago

And what about if i want to add also >= -- equal or greater? param1=234&param2=5||param3>3param4>=5

MonkeyZeus Over a year ago

@master17 since it's two consecutive chars then add it with a pipe at the end like |>=. Ditto for |<=. If you're just adding an individual char then you can throw it inside of the char set braces []

master17 Over a year ago

you mean like this : [=&><]||\|\||<=|>=

master17 Over a year ago

no its not working for expression with >= and <=

MonkeyZeus Over a year ago

@master17 I took a better look at [=&><]||\|\||<=|>= and it looks wrong. For java you need to escape the escape \\|. Not sure why you made that mistake...

|

logi-kal · Accepted Answer · 2021-02-16 13:24:11Z

1

If you want to create a key-value mapping:

Split on &|\|\|, obtaining strings as param1=234, param2=5 and param3>3.
For each string split on [>=] for obtaining the single key-value pair.

answered Feb 16, 2021 at 13:24

logi-kal

7,8996 gold badges35 silver badges48 bronze badges

Collectives™ on Stack Overflow

Regex pattern to split string

2 Answers 2

8 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

8 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related