org.springframework.expression: Bug in TemplateAwareExpressionParser when expressionString contains '}' [SPR-5438]

[spring-projects-issues]

Oliver Becker opened SPR-5438 and commented

I have a scenario where the expressionString that is to be parsed by the TemplateAwareExpressionParserf is a Javascript snippet that contains an expression. This script especially has closing braces after the expression

Something like
"{ var val = '${foo.bar}'; }"

The final method parseExpressions() has this part in it

} else {
     // another expression exists after this one in the expression string
     suffixIndex = expressionString.lastIndexOf(suffix, nextPrefixIndex);
}

(suffix is context.getExpressionSuffix() and evaluates to "}")

Apparently, when the expressionString contains a single } which does not belong to the expression, then the parser identifies the wrong substring as the expression to be parsed
(in this case the part "foo.bar}'; "), so the following expression parsing in doParseExpression() throws an exception.

---

Affects: 3.0 M1

[spring-projects-issues]

Juergen Hoeller commented

This is fixed now, as part of a general revision of template expression handling in 3.0 M2.

Out of curiosity: Where are you using Spring's expression parser there - from a web view template?

Juergen