Fix incorrect @SerializedName annotations in WxMaXPayQueryOrderResponse.OrderInfo

[Copilot]

WxMaXPayQueryOrderResponse.OrderInfo had two fields annotated with camelCase serialized names while the WeChat API returns snake_case JSON keys, causing those fields to always deserialize as null.

Changes

• Fix serialization keys:
  • @SerializedName("leftFee") → @SerializedName("left_fee")
  • @SerializedName("wxOrderId") → @SerializedName("wx_order_id")
• Update settState Javadoc to document the undocumented value 4 (Apple iOS order, pending Apple settlement)

// Before
@SerializedName("leftFee")
private Long leftFee;

@SerializedName("wxOrderId")
private String wxOrderId;

// After
/** 支付单类型时表示此单经过退款还剩余的金额，单位分 */
@SerializedName("left_fee")
private Long leftFee;

/** 微信内部单号 */
@SerializedName("wx_order_id")
private String wxOrderId;

• Add WxMaXPayQueryOrderResponseTest covering GSON deserialization of left_fee, wx_order_id, and sett_state=4

[augmentcode]

🤖 Augment PR Summary

Summary: This PR fixes GSON field mapping issues in WxMaXPayQueryOrderResponse.OrderInfo where camelCase @SerializedName values did not match the WeChat API’s snake_case JSON keys, causing deserialization to produce null.

Changes:

• Update @SerializedName for leftFee to left_fee
• Update @SerializedName for wxOrderId to wx_order_id
• Expand settState Javadoc to include undocumented value 4 (Apple iOS order settlement in progress)
• Add a unit test to validate deserialization of left_fee, wx_order_id, and sett_state=4

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[Copilot]

Pull request overview

该 PR 修复小程序 XPay 查询订单响应模型 WxMaXPayQueryOrderResponse.OrderInfo 中两个字段的 @SerializedName 键名与微信接口实际返回 JSON（snake_case）不一致的问题，避免反序列化后字段恒为 null，并补充单元测试验证反序列化行为。

Changes:

• 将 leftFee、wxOrderId 的 @SerializedName 从 camelCase 更正为 snake_case（left_fee、wx_order_id）。
• 补充 sett_state Javadoc，新增说明未文档化的取值 4（Apple iOS 订单结算中）。
• 新增 WxMaXPayQueryOrderResponseTest，覆盖上述字段及 sett_state=4 的 GSON 反序列化。

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/bean/xpay/WxMaXPayQueryOrderResponse.java	修正 @SerializedName 键名并完善 sett_state 文档说明，确保与接口返回字段一致。
weixin-java-miniapp/src/test/java/cn/binarywang/wx/miniapp/bean/xpay/WxMaXPayQueryOrderResponseTest.java	新增反序列化测试用例，验证 left_fee、wx_order_id、sett_state=4 能正确映射到字段。

[Copilot]

类注释里写的是“GSON 反序列化”，项目中其余位置通常使用库名“Gson”（与 WxMaGsonBuilder 命名一致）。建议将这里的“GSON”改为“Gson”，避免专有名词大小写不一致。

Suggested change

	* 验证 {@link WxMaXPayQueryOrderResponse} GSON 反序列化正确性的单元测试。
	* 验证 {@link WxMaXPayQueryOrderResponse} Gson 反序列化正确性的单元测试。