When to use which parameter directive?

Usually, you want to use the high-level parameters directive. When you need more low-level access you can use the table below to decide which directive to use which shows properties of different parameter directives.

directive level ordering multi
parameter high no no
parameters high no yes
parameterMap low no no
parameterMultiMap low no yes
parameterSeqparameterList low yes yes
high-level parameter directives extract subset of all parameters by name and allow conversions and automatically report errors if expectations are not met, low-level directives give you all parameters at once, leaving all further processing to you
original ordering from request URL is preserved
multiple values per parameter name are possible

If you need to extract multiple parameters, apply the parameter directive multiple times.

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