无法使用 jackson 从 START_ARRAY 令牌中反序列化 java.lang.String 的实例
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/40362036/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Can not deserialize instance of java.lang.String out of START_ARRAY token using Hymanson
提问by Anji R
Hi below is my JSON String
嗨，下面是我的 JSON 字符串
{
"addons": {
"BANDWIDTH": [
[
"HSV-A1ABW-C",
"BANDWIDTH",
"vCloud Air",
{
"Monthly": {
"1_99999": [
"219.00",
"HSV-A1ABW-12MT0-C1S",
"vCloud Air - 12 monthly Payments"
]
},
"Prepaid": {
"1_99999": [
"2577.00",
"HSV-A1ABW-12PT0-C1S",
"vCloud Air - Internet Bandwidth Subscription - 12 month Prepaid"
]
}
}
]
]
}
}
public class sample
{
@JsonProperty("addons")
public Addons addons;
//getters and setters
}
public class Addons
{
@JsonProperty("BANDWIDTH")
public List<List<String>> bANDWIDTH;
//getters and setters
}
ObjectMapper objectMapper = new ObjectMapper();
obj = objectMapper.readValue(json,sample.getClass());
when i run the , i am getting the following error Can not deserialize instance of java.lang.String out of START_OBJECT token here i have array has an array and in that array have an object along with values , how to parse this using Hymanson and java. Please help me Thanks in advance
当我运行时，我收到以下错误无法从 START_OBJECT 令牌中反序列化 java.lang.String 的实例，我有数组有一个数组，在该数组中有一个对象和值，如何使用 Hymanson 和爪哇。请帮助我 提前致谢
回答by zeppelin
You have declared BANDWIDTH to be of type List<List<String>> , while in your JSON it is a mixed list of 3 strings:
您已将 BANDWIDTH 声明为 List<List<String>> 类型，而在您的 JSON 中，它是 3 个字符串的混合列表：
"HSV-A1ABW-C",
"BANDWIDTH",
"vCloud Air"
and a complex object:
和一个复杂的对象：
{
"Monthly": {
"1_99999": [
"219.00",
"HSV-A1ABW-12MT0-C1S",
"vCloud Air - 12 monthly Payments"
]
},
"Prepaid": {
"1_99999": [
"2577.00",
"HSV-A1ABW-12PT0-C1S",
"vCloud Air - Internet Bandwidth Subscription - 12 month Prepaid"
]
}
}
hence the error
因此错误
And easiest "workaround" you can employ, is to just declare you BANDWIDTHproperty to be of type:
您可以采用的最简单的“解决方法”就是将BANDWIDTH属性声明为以下类型：
List<List<Object>>
and let Hymanson deserialize it as a combination of Maps and Lists.
并让 Hymanson 将其反序列化为 Maps 和 Lists 的组合。
