String manipulation on scriptlet

Question

I come from a PHP background. I just want to do a simple string replace.

I just want to replace any question marker with other character of '-'. in that "Material" string.

If I do

<%= Material %>

it will simple like write out "BBBB??AC".

I have no another access but just one .jsp file.

Is there another easy way i can do a string replace and print it out?

score 4 · Accepted Answer · edited May 23 '17 at 11:58

4

Assuming this Material in your scriptlet is a String, then just do

<%= Material.replaceAll("\\?", "-") %>

This would basically solve your doubt.

Still, if you can, stop using scriptlets, the reasons are better explained here: How to avoid Java code in JSP files?

Based on the posted link, the solution would be using EL and JSTL functions:

${fn:replace(Material, '?', '-')}

From your comment, since Material is not a String, you could perform a call to toString method before applying the replace. In scriptlet:

<%= Material.toString().replaceAll("\\?", "-") %>

In EL/JSTL you will need a temp variable to handle this:

<c:set var="materialString">
     ${Material}
</c:set>
${fn:replace(materialString, '?', '-')}

edited May 23 '17 at 11:58

Community

answered May 30 '13 at 02:59

Luiggi Mendoza

Hi Luiggi, this is great, but the application just stop render if i use replace method. So i think Material possible is not a String. Is there a way i can parse_string in JSP? – Bill May 30 '13 at 03:09
1

If `Material` is not a String, probably you would use `Material.toString()`. – Luiggi Mendoza May 30 '13 at 03:09
Sweet Lugiggi Thanks so much for your kind help – Bill May 30 '13 at 03:19
Quick one do i need to important any Class in order to do this replace method? – Bill May 30 '13 at 03:23
1

@bluebill1049 since is a `String`, no. If you're going to use JSTL, you will have to. Please refer to [StackOverflow JSTL wiki](http://stackoverflow.com/tags/jstl/info) for more info about it. – Luiggi Mendoza May 30 '13 at 03:24
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/30877/discussion-between-bluebill1049-and-luiggi-mendoza) – Bill May 30 '13 at 04:48

Parth Soni · Answer 2 · 2013-05-30T04:48:41.880

1

You can replace string with <%= Material.replaceAll("\\?","=");%>

edited May 30 '13 at 04:48

answered May 30 '13 at 03:00

Parth Soni

`String#replaceAll` receives a RegEx as first parameter, and `?` sign in regex is a special character, so it won't do it. Probably you meant `\\?`. – Luiggi Mendoza May 30 '13 at 03:01
Forget to add regex... Updated the answer ; – Parth Soni May 30 '13 at 04:49

2 Answers2