Jackson Json List里面的对象 [英] Jackson Json List inside object

问题描述

我在使用Jackson将Json String转换为java中的Object时遇到了困难。

I am having difficulties transforming a Json String into an Object in java using Jackson.

模型

public class MyList {    
   public List<MyObj> ads;
}

public class MyObj {    
   public String id_ad;
}

数据：

String con = "{\"ads\":[{\"id_ad\":\"20439\"}, {\"id_ad\":\"20449\"}]";

检索代码：

ObjectMapper objectMapper = new ObjectMapper();
MyList annonces = objectMapper.readValue(con, MyList.class);

错误：

Erreur dans getAllAds: com.fasterxml.jackson.core.io.JsonEOFException: 
Unexpected end-of-input: expected close marker for Object (start marker at [Source: {"ads":[{"id_ad":"20439"}, {"id_ad":"20449"}]; line: 1, column: 1])
 at [Source: {"ads":[{"id_ad":"20439"}, {"id_ad":"20449"}]; line: 1, column: 91]

问题：

1. 出了什么问题？

1. What is wrong?

我是否需要杰克逊的getter / setter或公共成员应该工作
罚款？

Do I need getter/setter for Jackson or public member should work fine?

推荐答案

你的JSON不正确，它丢失了结尾的大括号（} ）。

Your JSON is incorrect, it is missing a closing curly bracket (}) at the end.

改变自：

String con = "{\"ads\":[{\"id_ad\":\"20439\"}, {\"id_ad\":\"20449\"}]";

to：

String con = "{\"ads\":[{\"id_ad\":\"20439\"}, {\"id_ad\":\"20449\"}]}";

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