杰克逊JSON反序列化
问题描述:
我试图反序列化使用杰克逊用下列JSON有效载荷:杰克逊JSON反序列化
[{
"owner" : "345MWyh7w4hY98W6",
"url" : "http://www.google.com",
"items" : [{
"createdAt" : 1342099411415,
"amount" : 1,
"note" : "item 1",
"product" : "car"
}, {
"createdAt" : 1342100231111,
"amount" : 4,
"note" : "item 2",
"product" : "wheels"
}],
"createdAt" : 1342096943777,
"title" : "Car order",
"description" : "car order",
"id" : "98hw85Y945e6U358"
}]
我使用下面的代码进行反序列化:
ObjectMapper mapper = new ObjectMapper().configure(
DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
List<Order> result = null;
try {
result = mapper.readValue(jsonString,new TypeReference<List<Order>>() { });
} catch (IOException e) {
e.printStackTrace();
}
不过,我得到以下错误:
org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor aroundWriteTo
SEVERE: MessageBodyWriter not found for media type=application/json, type=class org.glassfish.jersey.client.InboundJaxrsResponse, genericTyp
e=class org.glassfish.jersey.client.InboundJaxrsResponse.
Feb 06, 2015 8:14:45 PM org.glassfish.jersey.filter.LoggingFilter log
该类Orders是由RAML - > JAX-RS maven插件生成的,它没有零参数构造函数。除了修改生成的类以添加零参数构造函数之外,是否有任何方法可以执行此反序列化?
答
能够解决问题。我创建了一个包装DTO在命令如下:
@XmlRootElement
public class OrderDTO {
private List<Order> orderList;
public List<Order> getOrderList() {
return orderList;
}
public void setOrderList(List<Order> orderList) {
this.orderList = orderList;
}
public void addOrder(Order order){
orderList.add(order);
}
public OrderDTO() {
super();
orderList = new ArrayList<Order>();
}
}
在这里,我能够加入零参数的构造函数。现在它工作:)。
检查这个http://*.com/questions/23601842/jersey-messagebodywriter-not-found-for-media-type-application-json-type-class 你有MessageBodyWrite没有发现异常。 – 2015-02-07 04:33:20