Java 找不到类 org.json.JSONObject 的序列化程序，也没有发现创建 BeanSerializer 的属性
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No serializer found for class org.json.JSONObject and no properties discovered to create BeanSerializer
提问by abhishek ringsia
having JSON from web service, Json Array as a response
有来自 Web 服务的 JSON，Json Array 作为响应
[3]
0: {
id: 2
name: "a561137"
password: "test"
firstName: "abhishek"
lastName: "ringsia"
organization: "bbb"
}-
1: {
id: 3
name: "a561023"
password: "hello"
firstName: "hello"
lastName: "hello"
organization: "hello"
}-
2: {
id: 4
name: "a541234"
password: "hello"
firstName: "hello"
lastName: "hello"
organization: "hello"
}
After Getting Response in JsonArray Getting error while reading Json Object of Json Array :
在 JsonArray 中获得响应后在读取 Json Array 的 Json 对象时出现错误：
List<User> list = new ArrayList<User>();
JSONArray jsonArr = new JSONArray(response);
for (int i = 0; i < jsonArr.length(); i++) {
JSONObject jsonObj = jsonArr.getJSONObject(i);
ObjectMapper mapper = new ObjectMapper();
User usr= mapper.convertValue(jsonObj, User.class);
list.add(usr);
}
No serializer found for class org.json.JSONObject and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS) )
没有找到类 org.json.JSONObject 的序列化程序，也没有发现创建 BeanSerializer 的属性（为了避免异常，禁用 SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS））
采纳答案by abhishek ringsia
have To Accept it first as a Json Array ,then while reading its Object have to use Object Mapper.readValue ,because Json Object Still in String .
必须首先将其作为 Json 数组接受，然后在读取其对象时必须使用 Object Mapper.readValue ，因为 Json 对象仍在 String 中。
List<User> list = new ArrayList<User>();
JSONArray jsonArr = new JSONArray(response);
for (int i = 0; i < jsonArr.length(); i++) {
JSONObject jsonObj = jsonArr.getJSONObject(i);
ObjectMapper mapper = new ObjectMapper();
User usr = mapper.readValue(jsonObj.toString(), User.class);
list.add(usr);
}
