CODEWITHSUNDEEP
javaservletsstruts2
Sotirios Delimanolis
Sotirios Delimanolis

Reputation: 279970

Getting request parameters in a Struts Action when you don't know what they are called

I have a struts ActionSupport class that uses a Map<String, String> to create <input> elements in a jsp where the name of the input is the key of the map. The map contains parameters (not fields) for a domain object I'm manipulating. I know that if you have a request parameter called, ex. username, you could have a field in the class

private String username;

with a getter and setter and it would be populated for you. However, I can't know the name of the request parameters. Is there any way of injecting all remaining (those not mapped to fields) request parameters as a map (or other structure)?

The other solution I can think of is to use

ServletActionContext.getRequest();

get the request parameters, and compare them myself.

Upvotes: 1

Views: 2923

Answers (1)

NilsH
NilsH

Reputation: 13821

You can implement the ParameterAware interface and have the parameters injected into your action as a Map<String, String[]>. However, It will give you all the request parameters, not only those it could populate directly in the action.

Upvotes: 3

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