java-json-client

This is a library that provides you with a simple way to do http/https requests to your REST API.

Usage

<dependency>
    <groupId>no.bouvet</groupId>
    <artifactId>json-client</artifactId>
    <version>1.0.5</version>
</dependency>

Create your json client like this:

JsonClient jsonClient = new JsonClient();

Or with a ObjectMapper like this:

JsonClient jsonClient = new JsonClient(objectMapper);

How to get your REST-API response for GET, POST, PUT and DELETE:

HttpResponse response = jsonClient.http().get("http://").response();
HttpResponse response = jsonClient.http().post("http://", new ObjectToPost()).response();
HttpResponse response = jsonClient.http().put("http://", new ObjectToPut()).response();
HttpResponse response = jsonClient.http().delete("http://").response();

How to get your response using https:

HttpResponse response = jsonClient.ssl().get("http://").response();

How to get and parse your response directly to your preferred object:

MyObject myObject = jsonClient.http().get("http://").object(MyObject.class);

How to get and parse your response directly to your preferred list:

List<MyObject> myObject = jsonClient.http().get("http://").list(MyObject.class);

How to get and parse your response directly to your preferred list of list:

List<MyObject> myObject = jsonClient.http().get("http://").listOfList(MyObject.class);

How you get and parse your response directly to your preferred map:

Map<String, MyObject> myObject = jsonClient.http().get("http://").map(MyObject.class);

How to poll for data and trigger when condition is fulfilled (example - TestObjectCondition )

MyObject myObject = jsonClient.http().poll("http://", MyObject.class, 5000, new TestObjectCondition(state));

How to poll for data without any conditions.

MyObject myObject = jsonClient.http().poll("http://", MyObject.class, 5000);

If you are using Spring and Joda DateTime you might need to configure it using JsonClientJackson2ObjectMapperFactoryBean in your servlet.xml

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper">
                <bean class="no.bouvet.jsonclient.spring.JsonClientJackson2ObjectMapperFactoryBean"/>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

This how you solve it using Spring 4 annotation configuration

@Configuration
@ComponentScan("no.bouvet.app")
@EnableWebMvc
public class DispatcherConfig extends WebMvcConfigurerAdapter {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters){
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        converter.setObjectMapper(new JsonClientJackson2ObjectMapperFactoryBean().getObject());
        converters.add(converter);
        super.configureMessageConverters(converters);
    }
}

This library has been tested on a REST API implemented in:

• Jersey
• Spring