如何在Velocity 2.0中转义双引号？

Question

I'm using Velocity 2.0. I've created a method in a custom tool that finds and returns a substring between two strings. This method takes three arguments: the initial string, a beginning subsequence, and an ending subsequence. I've verified that this is working with unit tests.

My question is this: how do, in my velocity template, escape quotes so that I can pass in a string that contains double quotes?

My initial string $mystr is a json snippet and will look something like:

"receiver":"867-5309",

I'm trying to extract the 867-5309 from the string, which means that my begin string is "receiver":" and my end string is ",

I've tried:

$stringTool.findSubstringBetween($mystr, """receiver"":"", """,")

and

$stringTool.findSubstringBetween($mystr, "\"receiver\":\", "\",")

but neither of these works (the first one causes a ParseErrorException, and the second yields double backslashes in the values passed to the method).

Answer 1

You can try setting this

#set ( $d = '"')

Then you can use

${d} 

In place of the quotation in the strings.