CODEWITHSUNDEEP
javaspring-mvc
pranky64
pranky64

Reputation: 415

number format exception: for string "" when using <spring:bind> tag with form checkboxes

I'm using spring 3.0, in my jsp i have a couple of checkboxes (the normal ones <input type="checkbox" ....>). I'm using the <spring:bind path="businessL1"> to bind it with the bean with property String[] businessL1; the checkboxes look something like this (in html) :-

  <input type="checkbox" value="2" name="businessL1[]">

Now when every i try to submit the form the following exception is thrown:-

[org.apache.jsp.WEB_002dINF.jsp.error.GenericError_jsp] -  Generic Error:
    java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.Integer.parseInt(Integer.java:470)
at java.lang.Integer.parseInt(Integer.java:499)
at                                      
   org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:938)
at 
   org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:900)
at........

I'm have no conversions being done, everything is of String type. the controller i'm using is a simple form controller by the way the rest of the properties i.e the non checkbox type like text etc. are being set in the bean successfully.

Upvotes: 1

Views: 1488

Answers (1)

axtavt
axtavt

Reputation: 242706

As far as I understand, you don't need square brakets to bind checkbox values to String[]:

<input type="checkbox" value="2" name="businessL1">

Upvotes: 1

Related Questions