1. 迁移交易订单的查询接口

2. 支付服务，重新初始化结构

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/enums/PayChannelEnum.java

@@ -0,0 +1,58 @@
+package cn.iocoder.mall.payservice.enums;
+
+import cn.iocoder.common.framework.core.IntArrayValuable;
+
+import java.util.Arrays;
+
+/**
+ * 支付通道
+ */
+public enum PayChannelEnum implements IntArrayValuable {
+
+    WEIXIN_APP(100, "wx", "微信 App 支付"),
+    WEIXIN_PUB(101, "wxjs", "微信 JS API 支付"),
+
+    ALIPAY(200, "alipay", "支付宝 App 支付"),
+
+    PINGXX(9999, "ping++", "ping++ 支付"),
+    ;
+
+    public static final int[] ARRAYS = Arrays.stream(values()).mapToInt(PayChannelEnum::getId).toArray();
+
+    /**
+     * 渠道编号
+     */
+    private Integer id;
+    /**
+     * 编码
+     */
+    private String code;
+    /**
+     * 渠道名
+     */
+    private String name;
+
+    PayChannelEnum(Integer id, String code, String name) {
+        this.id = id;
+        this.code = code;
+        this.name = name;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public int[] array() {
+        return ARRAYS;
+    }
+
+}

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/rpc/app/PayAppRpc.java

@@ -0,0 +1,7 @@
+package cn.iocoder.mall.payservice.rpc.app;
+
+/**
+ * 支付应用 RPC 接口
+ */
+public interface PayAppRpc {
+}

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/rpc/app/dto/PayAppRespDTO.java

@@ -0,0 +1,36 @@
+package cn.iocoder.mall.payservice.rpc.app.dto;
+
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+import java.io.Serializable;
+
+/**
+ * 支付应用 Response DTO
+ */
+@Data
+@Accessors(chain = true)
+public class PayAppRespDTO implements Serializable {
+
+    /**
+     * 应用编号
+     */
+    private String id;
+    /**
+     * 应用名
+     */
+    private String name;
+    /**
+     * 异步通知地址
+     */
+    private String payNotifyUrl;
+    /**
+     * 退款异步通知地址
+     */
+    private String refundNotifyUrl;
+    /**
+     * 状态
+     */
+    private Integer status;
+
+}

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/rpc/package-info.java

@@ -0,0 +1 @@
+package cn.iocoder.mall.payservice.rpc;

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/rpc/transaction/PayTransactionRpc.java

@@ -0,0 +1,10 @@
+package cn.iocoder.mall.payservice.rpc.transaction;
+
+/**
+ * 支付交易单 RPC 接口
+ */
+public interface PayTransactionRpc {
+
+
+
+}

pay-service-project/pay-service-api/src/main/java/cn/iocoder/mall/payservice/rpc/transaction/dto/PayTransactionCreateReqDTO.java

@@ -0,0 +1,66 @@
+package cn.iocoder.mall.payservice.rpc.transaction.dto;
+
+import lombok.Data;
+import lombok.experimental.Accessors;
+import org.hibernate.validator.constraints.Length;
+
+import javax.validation.constraints.DecimalMin;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+import java.util.Date;
+
+/**
+ * 支付交易单创建 DTO
+ */
+@Data
+@Accessors(chain = true)
+public class PayTransactionCreateReqDTO implements Serializable {
+
+    /**
+     * 应用编号
+     */
+    @NotEmpty(message = "应用编号不能为空")
+    private String appId;
+    /**
+     * 发起交易的 IP
+     */
+    @NotEmpty(message = "IP 不能为空")
+    private String createIp;
+
+    /**
+     * 订单号
+     */
+    @NotEmpty(message = "订单号不能为空")
+    private String orderId;
+    /**
+     * 商品名
+     */
+    @NotEmpty(message = "商品名不能为空")
+    @Length(max = 32, message = "商品名不能超过32")
+    private String orderSubject;
+    /**
+     * 订单商品描述
+     */
+    @NotEmpty(message = "商品描述不能为空")
+    @Length(max = 128, message = "商品描述长度不能超过128")
+    private String orderDescription;
+    /**
+     * 订单商品备注
+     */
+    @Length(max = 256, message = "商品备注长度不能超过256")
+    private String orderMemo;
+    /**
+     * 支付金额，单位：分
+     */
+    @NotNull(message = "金额不能为空")
+    @DecimalMin(value = "0", inclusive = false, message = "金额必须大于零")
+    private Integer price;
+
+    /**
+     * 交易过期时间
+     */
+    @NotNull(message = "交易过期时间不能为空")
+    private Date expireTime;
+
+}