如何使用 GSON 和 @SerializedName 获取 JSON 字段?

Question

我在解析以下 JSON 对象时遇到问题

"paymentCurrency": "eur",
"paymentOptions": [
{
"paymentOptionId": "1CeGuJt2nkxmaMVf",
"paymentProfileUpdateNeeded": false,
"status": "DISABLED",
"supportedCardTypes": [
"CARD_TYPE_1",
"CARD_TYPE_2",
"CARD_TYPE_3"
],
"type": "TYPE_1"
},
{
"paymentOptionId": "J8iAFXRZZC07rJdG",
"status": "DISABLED",
"type": "TYPE_2"
}
],
"tripCost": "3000",

这就是我迄今为止所尝试的。除了 @SerializedName 和 GSON 之外，我不能使用任何东西来解析数组。请在下面找到模型类：

public class MatchDetails {
//other fields
@SerializedName("paymentOptions")
public ArrayList<PaymentOptionWrapper> options;
}
public class PaymentOptionWrapper {
public PaymentOption option;
}

public class PaymentOption {
@SerializedName("paymentOptionId")
public String paymentOptionId;
@SerializedName("paymentProfileUpdateNeeded")
public boolean profileUpdateNeeded;
@SerializedName("status")
public String status;
@SerializedName("supportedCardTypes")
public ArrayList<String> supportedCards;
@SerializedName("type")
public String type;
}

我也尝试不使用包装器，直接映射列表，但它仍然是空的。

Answer 1

试试这个...

public class MatchDetails {
//other fields
@SerializedName("paymentOptions")
public ArrayList<PaymentOption> options;
public ArrayList<PaymentOption> getOptions() {
return options;
}
public void setOptions(ArrayList<PaymentOption> options) {
this.options = options;
}
}

class PaymentOption {
@SerializedName("paymentOptionId")
public String paymentOptionId;
@SerializedName("paymentProfileUpdateNeeded")
public boolean profileUpdateNeeded;
@SerializedName("status")
public String status;
@SerializedName("supportedCardTypes")
public ArrayList<String> supportedCards;
@SerializedName("type")
public String type;
public String getPaymentOptionId() {
return paymentOptionId;
}
public void setPaymentOptionId(String paymentOptionId) {
this.paymentOptionId = paymentOptionId;
}
public boolean isProfileUpdateNeeded() {
return profileUpdateNeeded;
}
public void setProfileUpdateNeeded(boolean profileUpdateNeeded) {
this.profileUpdateNeeded = profileUpdateNeeded;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public ArrayList<String> getSupportedCards() {
return supportedCards;
}
public void setSupportedCards(ArrayList<String> supportedCards) {
this.supportedCards = supportedCards;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}

Answer 2

试试这个：

public class MatchDetails implements Serializable
{
@SerializedName("paymentOptions")
@Expose
private List<PaymentOption> paymentOptions = null;
private final static long serialVersionUID = 7730239716376724487L;
public List<PaymentOption> getPaymentOptions() {
return paymentOptions;
}
public void setPaymentOptions(List<PaymentOption> paymentOptions) {
this.paymentOptions = paymentOptions;
}
}

和

public class PaymentOption implements Serializable
{
@SerializedName("paymentOptionId")
@Expose
private String paymentOptionId;
@SerializedName("paymentProfileUpdateNeeded")
@Expose
private Boolean paymentProfileUpdateNeeded;
@SerializedName("status")
@Expose
private String status;
@SerializedName("supportedCardTypes")
@Expose
private List<String> supportedCardTypes = null;
@SerializedName("type")
@Expose
private String type;
private final static long serialVersionUID = -5717104877176081166L;
public String getPaymentOptionId() {
return paymentOptionId;
}
public void setPaymentOptionId(String paymentOptionId) {
this.paymentOptionId = paymentOptionId;
}
public Boolean getPaymentProfileUpdateNeeded() {
return paymentProfileUpdateNeeded;
}
public void setPaymentProfileUpdateNeeded(Boolean paymentProfileUpdateNeeded) {
this.paymentProfileUpdateNeeded = paymentProfileUpdateNeeded;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public List<String> getSupportedCardTypes() {
return supportedCardTypes;
}
public void setSupportedCardTypes(List<String> supportedCardTypes) {
this.supportedCardTypes = supportedCardTypes;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}