[英]Convert JSON File to Java Object but java object is giving me null values
[英]Parsing JSON as Java Object is giving me some null values
I'm trying to convert a JSON object into a POJO class, but some values are ending up with null values while others are set to the value from the JSON. 回应是
{
"intention_id": 12936,
"intention_datetime": "2021-03-09T09:58:16-03:00",
"status": "created",
"cuit": "20-314559999-9",
"branch": "Avellaneda 13",
"checkout": "8",
"terminal_number": "87980012",
"intention_type": "payment",
"original_amount": 1200.0,
"currency": "ARS",
"payment_methods_data": [
{
"payment_method_id": 1,
"establishment_id": "29880765",
"trace_number": 1090,
"ticket_number": 131,
"installments": [
{
"quantity": 1,
"total_amount": 1200.0,
"amount_per_installment": 200.0,
"cft": 12.56,
"tna": 14.87
},
{
"bank_id": 28,
"quantity": 6,
"total_amount": 1200.0,
"amount_per_installment": 200.0,
"cft": 12.56,
"tna": 14.87
},
{
"quantity": 6,
"total_amount": 1400.0,
"amount_per_installment": 233.33,
"cft": 12.56,
"tna": 14.87
}
]
},
{
"payment_method_id": 15,
"establishment_id": "69880548",
"trace_number": 2034,
"ticket_number": 673,
"installments": [
{
"quantity": 1,
"total_amount": 1200.0,
"amount_per_installment": 200.0,
"cft": 12.56,
"tna": 14.87
},
{
"bank_id": 28,
"quantity": 6,
"total_amount": 1200.0,
"amount_per_installment": 200.0,
"cft": 12.56,
"tna": 14.87
},
{
"quantity": 6,
"total_amount": 1400.0,
"amount_per_installment": 233.33,
"cft": 12.56,
"tna": 14.87
}
]
}
],
"integrator_intention_id": "587cba61-ff27-46c6-ba8b-fd936665c35f",
"integrator": "alsea"
}
我忽略了数组元素,所以我的 Object Class 是
public class ObjectResponseBimo {
public int intention_id;
public String intention_datetime;
public String status;
public String cuit;
public String branch;
public String checkout;
public String terminal_number;
public String intention_type;
public double original_amount;
public String currency;
public String integrator_intention_id;
public String integrator;
public int getIntention_id() {
return intention_id;
}
@JsonProperty("intention_id")
public void setIntention_id(int intention_id) {
this.intention_id = intention_id;
}
public String getIntention_datetime() {
return intention_datetime;
}
@JsonProperty("intention_datetime")
public void setIntention_datetime(String intention_datetime) {
this.intention_datetime = intention_datetime;
}
public String getStatus() {
return status;
}
@JsonProperty("status")
public void setStatus(String status) {
this.status = status;
}
public String getCuit() {
return cuit;
}
@JsonProperty("cuit")
public void setCuit(String cuit) {
this.cuit = cuit;
}
public String getBranch() {
return branch;
}
@JsonProperty("branch")
public void setBranch(String branch) {
this.branch = branch;
}
public String getCheckout() {
return checkout;
}
@JsonProperty("checkout")
public void setCheckout(String checkout) {
this.checkout = checkout;
}
public String getTerminal_number() {
return terminal_number;
}
@JsonProperty("terminal_number")
public void setTerminal_number(String terminal_number) {
this.terminal_number = terminal_number;
}
public String getIntention_type() {
return intention_type;
}
@JsonProperty("intention_type")
public void setIntention_type(String intention_type) {
this.intention_type = intention_type;
}
public double getOriginal_amount() {
return original_amount;
}
@JsonProperty("original_amount")
public void setOriginal_amount(double original_amount) {
this.original_amount = original_amount;
}
public String getCurrency() {
return currency;
}
@JsonProperty("currency")
public void setCurrency(String currency) {
this.currency = currency;
}
public String getIntegrator_intention_id() {
return integrator_intention_id;
}
@JsonProperty("integrator_intention_id")
public void setIntegrator_intention_id(String integrator_intention_id) {
this.integrator_intention_id = integrator_intention_id;
}
public String getIntegrator() {
return integrator;
}
@JsonProperty("integrator")
public void setIntegrator(String integrator) {
this.integrator = integrator;
}
@Override
public String toString() {
return "ObjectResponseBimo [intention_id=" + intention_id + ", intention_datetime=" + intention_datetime
+ ", status=" + status + ", cuit=" + cuit + ", branch=" + branch + ", checkout=" + checkout
+ ", terminal_number=" + terminal_number + ", intention_type=" + intention_type + ", original_amount="
+ original_amount + ", currency=" + currency + ", integrator_intention_id=" + integrator_intention_id
+ ", integrator=" + integrator + "]";
}}
所有其他的 getter 和 setter,每个人的 set 方法中都有 JsonProperty
我正在使用 Jackson,所以我发送 object
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
ObjectResponseBimo o = objectMapper.readValue(jsonToPost, ObjectResponseBimo.class);
return objectMapper.toString() + "\n" + o.toString();
output 是:
ObjectResponseBimo [intention_id=0,intention_datetime=null,status=null,cuit=20-314559999-9,branch=Avellaneda 13,结帐=8,terminal_number=87980012,intention_type=payment,original_amount=1200.0,currency=ARS,integrator_intention_id=587cba61 -ff27-46c6-ba8b-fd936665c35f,积分器=空]
因此,我只是尝试复制您的代码并进行了一些更改。
**@JsonIgnoreProperties(ignoreUnknown = true)**
public class ObjectResponseBimo {
这将忽略 json 中与等效 java 属性不匹配的未知属性。
ObjectMapper objectMapper = new ObjectMapper();
ObjectResponseBimo ob = objectMapper.readValue(ClassLoader.getSystemResourceAsStream("ObjectResponseBimo.json"), ObjectResponseBimo.class);
System.out.println(ob.toString());
System.out.println(ob.getIntention_id() + " | " + ob.getBranch());
我不确定为什么 toString() 不适合你。 虽然它对我有用。
您提供的代码工作正常。 我刚刚将它复制到干净的项目中并进行了测试。
我会给你几个笔记,与问题无关。
private
的,对于 Jackson 不需要设置器和获取器来生成 json。 它使用反射。CamelCase
。 这是 Java 中的一般做法。这就是,您的数据 class 应该如下所示:
public class ObjectResponseBimo {
@JsonProperty("intention_id")
private int intentionId;
@JsonProperty("intention_datetime")
private String intentionDatetime;
private String status;
private String cuit;
private String branch;
private String checkout;
@JsonProperty("terminal_number")
private String terminalNumber;
@JsonProperty("intention_type")
private String intentionType;
@JsonProperty("original_amount")
private double originalAmount;
private String currency;
@JsonProperty("integrator_intention_id")
private String integratorIntentionId;
private String integrator;
}
要使用 json,您可以使用一个工具来隐藏所有常规。 例如JacksonUtils :
ObjectResponseBimo obj = JacksonUtils.readValue(json, ObjectResponseBimo.class);
PS重复,您提供的代码在干净的项目上运行良好。 可能你在其他地方有问题,这只是副作用。
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