Restful webservice Query param issue

Question

We are using Restful web services in our project. I am passing object of below class to my webservice as Query parameter.

public class QueryDTO {
    private String name;
    private Object[] args;
    private Object[] results;
//with setters and getters
}

Here is my webservice configuration

@GET
@Produces("application/json")
@Path("/")
QueryDTO executeQuery(@QueryParam("") QueryDTO queryDTO) throws Exception;

Here args may contain any of datatypes(String,Interger,Date ..etc ) When I call

rest/query?name="getCreativeExtractorPatternByName"&args={"473"}

I am getting below exception.

Parameter Class java.lang.Object has no constructor with single String parameter, static valueOf(String) or fromString(String) methods

Please help me in resolving this..

i dont think you can give an array in the query parameters, thats why exception comes up ! and also you dont need to put the values in double quotes for query params — Sikorski
– Sikorski, Commented Aug 6, 2012 at 12:53
see this for array : stackoverflow.com/questions/5484209/… — Sikorski
– Sikorski, Commented Aug 6, 2012 at 12:55

Conner · Accepted Answer · 2012-08-17 14:12:09Z

0

Add a single argument construtor:

public QueryDTO(String name) {
  this.name = name;
}

For injecting the parameters into your DTO object, it should consist a constructor accepting a String parameter.

You should provide a valid Query Parameter for successful injection in your DTO object.

Conner

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answered Aug 6, 2012 at 11:38

user647772

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1 Comment

Can you please explain me , why we need this? Meanwhile, i will try with it and let you know.