Im having an issue with a grails app.开发者_JAVA技巧

In some occassions, when retrieving an instance with MyObject.get(id), I get this exception:

Expected: class java.lang.Integer, got class java.lang.String

So I did this:

Integer i = Integer.valueOf(params.id);

MyObject.get(i);

However, the a new problem appears. Integer#valueOf(String) seems to return a formatted value, so if params.id is greater than 1000, i gets a decimal point (e.g 1253 ->1.253).

update

After some more research, i've found that the value of params.id is coming with the decimal dot, even though its not present in the query string:

http://somesite.com//action?other=33&id=1485

params.id = 1.485

Whats up with that decimal point? Is there any grailsy approach to this?

Thanks in advance

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As described in the Simple Type Converters section of the Grails documentation, you can convert incoming parameters from String to int like so:

def i = params.int('id')

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I often use groovy syntax to do this:

def i = (params.id as int)

---

Use Integer.parseInt instead of Integer.valueOf

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I have noted that if I use this:

${fieldValue(bean:myBean,field:'aLongField')}

In a GSP page, it will be formatted and displayed like "1.485" or " 1,485" depending on the current locale.

If I use:

${myBean.aLongField }

or even

${myBean.aLongField.toString() }

Does not call NumberFormat and display the raw value.