CODEWITHSUNDEEP
javaweb-serviceshashmapjax-rpc
java_enthu
java_enthu

Reputation: 2327

Getting Exception while generating the WebService when HashMap is passed as parameter

I am trying to create a webservice which takes a VO and VO contains a parameter of type Map. I wrote this simple Service and trying to create the webservice out of it. While creating the webservice I am getting exception that its not supported.

 public MyVO myService(MyVO vo) {
    return vo;
}

public class VO{
  private String name;
  private Map<String, Serializable> paramsMap;  
}

Error Which I am getting :

The field or property on the value type used via the service class has a data type, "java.util.Map", that is not supported by the JAX-RPC 1.1 specification. Instances of the type may not serialize or deserialize correctly. Loss of data or complete failure of the Web service may result.

I am not sure what's wrong with this. Any help or work around?

thanks in advance.

Upvotes: 0

Views: 1373

Answers (1)

Buhake Sindi
Buhake Sindi

Reputation: 89169

This link shows the data types supported by JAX-RPC 1.1 and Map (and all its subclasses aren't supported).

JAX-RPC 1.1 Specification, section 5.1.3 states:

Other standard Java classes (for example: classes in the Java Collection Framework) are mapped using pluggable serializers and deserializers. Refer to the chapter 15 (“Extensible Type Mapping”) for more details on the pluggable serializers and deserializers.

One workaround is to have an array of key/value pair JavaBean that you can pass through a parameter.

Example:

public final class KVPair<T> implements Serializable {
    private String key;
    private T value;

    //Getters and setters
}

And have a service that has a map of KVPair.

service.consume(KVPair[] map);

IBM DeveloperWorks shows examples of mapping arrays as a Complex Type in WSDL.

Upvotes: 1

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