Java – how to use El JSTL to convert arbitrary objects to strings? (call tostring())

Is there a way to call toString () in an object with EL and JSTL? (I need an enumerated string representation as an index in the mapping in the JSP El expression.) I hope things like ${"object} work like Java, but el is not very good and doesn't seem to do any function

Clarification: I have a variable soap map string to string, and I have a variable someenum which is an enumeration I want to do something like ${soap memap [someenum. Tostring()]} Of course. ToString () doesn't work, but what

Solution

You just do this:

${object}

It will give you

Edit: your nested expression can be parsed like this:

<c:set var="myValue">${someenum}</c:set>
${somemap[myValue]}

The first line uses (using tostring()) ${someenum} expression and stores it in the myvalue variable The second line uses myvalue to index the map