Hello,
I have a simple Spring Boot application to
test REST APIs using Jersey Implementation. Here is what I have:
1. Main Spring Boot Application
import org.glassfish.jersey.server.ResourceConfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import com.mypackage.MyRestController;
@SpringBootApplication
public class MySpringBootApp extends SpringBootServletInitializer{
public static void main(
String[] args) {
SpringApplication.run(IDAASpringBootApp.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(MySpringBootApp.class);
}
@Bean
ResourceConfig resourceConfig() {
return new ResourceConfig().register(MyRestController.class);
}
}//End of class
2. My Controller
import org.springframework.web.bind.annotation.RestController;
import com.mypackage.Result;
import com.mypackage.ScoreCard;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import java.util.ArrayList;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Controller
@Path("/app")
public class MyRestController {
@GET
@Path("/")
public String Hello() {
return "HELLO REST CONTROLLER";
}
@GET
@Path("/{type}")
public String hello2(@PathParam("type") String type) {
return "hello 2 REST CONTROLLER" + type;
}
@GET
@Path("/Result/{id}")
@Produces({MediaType.APPLICATION_JSON})
public Result getResult(@PathParam("id") String id) {
Result result= new Result();
ScoreCard sc1= new ScoreCard();
ArrayList<ScoreCard> scoreCardList = new ArrayList<ScoreCard>();
sc1.setSubject("Math");
sc1.setGrade("A");
ScoreCard sc2= new ScoreCard();
sc2.setSubject("Science");
sc2.setGrade("B");
scoreCardList.add(sc1);
scoreCardList.add(sc2);
result.setScoreCardList(scoreCardList);
if (id == null || id== "") {
id="01";
}
result.setMessage("Hello REST
Java Object " + id);
return result;
}
}//End of class
3. Jersey REST test client
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.Invocation;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.GenericType;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.jackson.internal.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import com.mypackage.Result;
import com.mypackage.ScoreCard;
public class RestClient {
public static void main(String[] args) {
String path="Result/100";
String url="http://localhost:9080/app/";
ClientConfig config = new ClientConfig();
config.register(JacksonJaxbJsonProvider.class);
Client client = ClientBuilder.newClient(config);
WebTarget webTarget = client.target(url).path(path);
Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);
Response response = invocationBuilder.get();
Result result=response.readEntity(Result.class);
if (result==null) {
System.out.println("result is null");
}else {
System.out.println(result.getMessage());
for(int i=0;i< result.getScoreCardList().size();i++) {
ScoreCard scoreCard= (ScoreCard) result.getScoreCardList().get(i);
System.out.println("Subject : " + scoreCard.getSubject() + " Grade: " + scoreCard.getGrade() + "\n");
}
}
}
}
4. My
maven pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mypackage</groupId>
<artifactId>MyREST</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- Jersey Server -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<!-- Jersey Client -->
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.jaxrs</groupId>
<artifactId>jackson-jaxrs-json-provider</artifactId>
<version>2.4.0</version>
</dependency>
</dependencies>
</project>
But when I run the RestClient I get the below exception
Exception in
thread "main" org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyReader not found for media type=text/html;charset=ISO-8859-1, type=class com.quest.idaa.odm.domain.Result, genericType=class com.quest.idaa.odm.domain.Result.
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:208)
at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:132)
at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1071)
at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:850)
at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:784)
at org.glassfish.jersey.client.ClientResponse.readEntity(ClientResponse.java:297)
at org.glassfish.jersey.client.InboundJaxrsResponse$1.call(InboundJaxrsResponse.java:91)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:205)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:365)
at org.glassfish.jersey.client.InboundJaxrsResponse.runInScopeIfPossible(InboundJaxrsResponse.java:240)
at org.glassfish.jersey.client.InboundJaxrsResponse.readEntity(InboundJaxrsResponse.java:88)
