Spring: Configuring Bean with a two argument setter

I would like to configure a HttpParams using spring setter injection but HttpParams has a two argument setter ( setParameter(String name, Object object) ). Is anyone aware of a way to confi开发者_运维百科gure this in spring?

The closest I can think of is like you would do a List, Set, or Property configuration:

http://www.mkyong.com/spring/spring-collections-list-set-map-and-properties-example/

Thanks!

Strictly speaking: A setter with two parameters is not a setter. It violates the JavaBeans convention, on which Spring builds. There is no simple way to solve that.

As an alternative, here's a Helper class you can use to configure your HttpParams object with Spring:

public class HttpParamSetter{

    private HttpParams httpParams;

    public void setHttpParams(HttpParams httpParams){
        this.httpParams = httpParams;
    }

    private Map<String, Object> parameters;

    public void setParameters(Map<String, Object> parameters){
        this.parameters = parameters;
    }

    @PostConstruct
    public void applyParameters(){
        for(Entry<String, Object> entry:parameters.entrySet()){
            httpParams.setParameter(entry.getKey(), entry.getValue());
        }

    }

}

Wire it like this:

<bean class="com.yourcompany.HttpParamSetter">
    <property name="httpParams" ref="httpParams" />
    <property name="parameters">
        <map>
            <entry key="foo" value="bar" />
            <entry key="baz" value="phleem" />
        </map>
    </property>
</bean>

I believe HttpConnectionParamBean and HttpProtocolParamBean were created for precisely this purpose. Documentation Example

Are you using Apache HttpClient? If so, the HttpClientParams implementation of HttpParams has real getters and setters that you can use.

Otherwise, I'd suggest writing a simple HttpParamsFactory that you could pass a map that contains the parameters you need and construct an appropriate instance of HttpParams.