org.codehaus.jackson.map.JsonMappingException: Impossible de désérialiser l'instance de java.util.ArrayList sur le marqueur START_OBJECT

Question

J'ai développé un exemple Spring MVC + RestEasy + Hibernate et je cherche à le tester en utilisant Junit, mais voir l'erreur ci-dessous : Aussi, je peux appeler ces services Web via jsp ou client de repos.

org.jboss.resteasy.spi.ReaderException: org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token 
at [Source: org.jboss.resteasy.client.core.SelfExpandingBufferredInputStream@23c30a20; line: 1, column: 1] 
    at org.jboss.resteasy.client.core.BaseClientResponse.readFrom(BaseClientResponse.java:470) 
    at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:385) 
    at org.jboss.resteasy.client.core.BaseClientResponse.getEntity(BaseClientResponse.java:346) 
    at test.resteasy.series.spring.mvc.hibernate.service.CustomerTest.testGetallcustomer(CustomerTest.java:19) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token 
at [Source: org.jboss.resteasy.client.core.SelfExpandingBufferredInputStream@23c30a20; line: 1, column: 1] 
    at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163) 
    at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:219) 
    at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:212) 
    at org.codehaus.jackson.map.deser.std.CollectionDeserializer.handleNonArray(CollectionDeserializer.java:246) 
    at org.codehaus.jackson.map.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:204) 
    at org.codehaus.jackson.map.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:194) 
    at org.codehaus.jackson.map.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:30) 
    at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2704) 
    at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1315) 
    at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:419) 
    at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.readFrom(AbstractReaderInterceptorContext.java:59) 
    at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.proceed(AbstractReaderInterceptorContext.java:51) 
    at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.aroundReadFrom(GZIPDecodingInterceptor.java:59) 
    at org.jboss.resteasy.core.interception.AbstractReaderInterceptorContext.proceed(AbstractReaderInterceptorContext.java:53) 
    at org.jboss.resteasy.client.core.BaseClientResponse.readFrom(BaseClientResponse.java:434) 
    ... 26 more 

Voici le test Junit que j'ai développé:

public class CustomerTest { 
    static final String ROOT_URL = "http://localhost:8080/RestEasy-Spring-MVC-Hibernate/resteasy/"; 

    @Test 
    public void testGetallcustomer() throws Exception { 
     ClientRequest request = new ClientRequest(ROOT_URL+"customerservice/getallcustomer"); 
     ClientResponse<List<Customer>> response = request.get(new GenericType<List<Customer>>(){}); 
     List<Customer> customers = response.getEntity(); 
     System.out.println("SIZE : "+customers.size()); 

    } 
} 

ressemble également à l'API sont déconseillés:

Answer 1

Je ne dis pas que c'est le moyen de fixe la problème. C'est une autre façon de résoudre le problème.

public class CustomerTest { 
    final String path = "http://localhost:8080/RestEasy-Spring-MVC-Hibernate/"; 
    ICustomerService proxy = null; 

    @Before 
    public void beforeClass(){ 
     ResteasyClient client = new ResteasyClientBuilder().build(); 
     ResteasyWebTarget target = client.target(UriBuilder.fromPath(path)); 
     proxy = target.proxy(ICustomerService.class); 
    } 

    @Test 
    public void testGetallcustomer() throws Exception { 
     CustomerListType customers = proxy.getAllCustomerInfo(); 
     List<CustomerType> customerTypes = customers.getCustomerType(); 
     for (CustomerType customerType : customerTypes) { 
      System.out.println("----------------------------------------------------"); 
      System.out.println("Name  : "+customerType.getName()); 
      System.out.println("Age  : "+customerType.getAge()); 
      System.out.println("CustomerId : "+customerType.getCustomerId()); 
     } 
    } 
}