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javastruts2booleanognl

Can Struts 2 handle isValid() methods instead of getValid()

In the Struts2 framework, when I call this code in the JSP:

if(test='item.value > 0')

It will execute the following Java code:

getItem().getValue() > 0

Does this framework also allow support for boolean attributes? Instead of a get() method, they are usually called "is". For example, public boolean isValid() instead of public boolean getValid. If I do the following struts code:

if(test='item.valid')

will it call the appropriate isValid() method or will it fail to find a getValid() method and thus return null?

Solution

  • It will call either isValid() or getValid() if one exist. If both methods exist which one will be called is not guaranteed by the Java reflection API. See Class#getDeclaredMethods(). Also Struts2 internally uses method caching, so the first one gets into cache will be used for the next time. So, use one of this methods to access properties.