我有一个返回List<VariablePresentation>
的休息端点。我试图将此休止端点测试为
@Test
public void testGetAllVariablesWithoutQueryParamPass() throws Exception {
final ClientRequest clientCreateRequest = new ClientRequest("http://localhost:9090/variables");
final MultivaluedMap<String, String> formParameters = clientCreateRequest.getFormParameters();
final String name = "testGetAllVariablesWithoutQueryParamPass";
formParameters.putSingle("name", name);
formParameters.putSingle("type", "String");
formParameters.putSingle("units", "units");
formParameters.putSingle("description", "description");
formParameters.putSingle("core", "true");
final GenericType<List<VariablePresentation>> typeToken = new GenericType<List<VariablePresentation>>() {
};
final ClientResponse<List<VariablePresentation>> clientCreateResponse = clientCreateRequest.post(typeToken);
assertEquals(201, clientCreateResponse.getStatus());
final List<VariablePresentation> variables = clientCreateResponse.getEntity();
assertNotNull(variables);
assertEquals(1, variables.size());
}
此测试失败并显示错误
org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token(..)
如何解决此问题?
答案 0 :(得分:6)
这看起来像是一个Jackson错误,它期望解析一个数组(以'['开头),但它遇到一个对象的开始标记('{')。从查看你的代码,我猜它正在尝试将JSON反序列化到你的List中,但是它获得了一个对象的JSON。
您的REST端点返回的JSON是什么样的?应该看起来像这样
[
{
// JSON for VariablePresentation value 0
"field0": <some-value>
<etc...>
},
<etc...>
]