Recently I encountered the usage of the method getAt() in Java code. It is used to get the data from a URL (which is sent via GET method by form submit). The URL will be like:
http://192.168.27.55/flight/search?n=airchina
The method was used like name=params.getAt("n"). Then the data was passed to another function by search("n",name). Can any one please brief me how it works?
getAt() in Groovy has special meaning for collections. It allows one to access elements of the collection using the subscript operator.
Here's the documentation for Map and List:
Map#getAt(key)
List#getAt(index)
Since it's defined to support some syntactic sugar, you don't really see it ever called directly, since it enables you to instead do something like:
Map foo = [bar: 'baz']
assert foo['bar'] == 'baz'
In your particular case with params, you'd simply use:
params['n']
...to take advantage of getAt(). Alternatively, you could use:
params.n
// or
params.get('n')
airchina, although you could simply write a log or use a debugger to figure out what the value is.
