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javaxmlvelocitytemplate-engine

in velocity can you iterate through a java hashmap's entry set()?


Can you do something like this in a velocity template?

#set ($map = $myobject.getMap() )
#foreach ($mapEntry in $map.entrySet())
    <name>$mapEntry.key()</name>
    <value>$mapEntry.value()</value>
#end

it outputs blank tags like so:

<name></name> 

and

<value></value> 

What am I doing wrong?


Solution

  • Your mistake is referring to key and value as methods (with trailing "()" parenthesis) instead of as properties. Try this:

    #set ($map = $myobject.getMap() )
    #foreach ($mapEntry in $map.entrySet())
        <name>$mapEntry.key</name>
        <value>$mapEntry.value</value>
    #end
    

    In other words, use either a property, like mapEntry.key, or the method, like mapEntry.getKey().