diff --git a/ruoyi-ccdi/src/main/resources/mapper/ccdi/CcdiPurchaseTransactionMapper.xml b/ruoyi-ccdi/src/main/resources/mapper/ccdi/CcdiPurchaseTransactionMapper.xml
new file mode 100644
index 0000000..0a87d2c
--- /dev/null
+++ b/ruoyi-ccdi/src/main/resources/mapper/ccdi/CcdiPurchaseTransactionMapper.xml
@@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.ruoyi.ccdi.mapper.CcdiPurchaseTransactionMapper">
+
+    <!-- 采购交易信息ResultMap -->
+    <resultMap type="com.ruoyi.ccdi.domain.vo.CcdiPurchaseTransactionVO" id="CcdiPurchaseTransactionVOResult">
+        <id property="purchaseId" column="purchase_id"/>
+        <result property="purchaseCategory" column="purchase_category"/>
+        <result property="projectName" column="project_name"/>
+        <result property="subjectName" column="subject_name"/>
+        <result property="subjectDesc" column="subject_desc"/>
+        <result property="purchaseQty" column="purchase_qty"/>
+        <result property="budgetAmount" column="budget_amount"/>
+        <result property="bidAmount" column="bid_amount"/>
+        <result property="actualAmount" column="actual_amount"/>
+        <result property="contractAmount" column="contract_amount"/>
+        <result property="settlementAmount" column="settlement_amount"/>
+        <result property="purchaseMethod" column="purchase_method"/>
+        <result property="supplierName" column="supplier_name"/>
+        <result property="contactPerson" column="contact_person"/>
+        <result property="contactPhone" column="contact_phone"/>
+        <result property="supplierUscc" column="supplier_uscc"/>
+        <result property="supplierBankAccount" column="supplier_bank_account"/>
+        <result property="applyDate" column="apply_date"/>
+        <result property="planApproveDate" column="plan_approve_date"/>
+        <result property="announceDate" column="announce_date"/>
+        <result property="bidOpenDate" column="bid_open_date"/>
+        <result property="contractSignDate" column="contract_sign_date"/>
+        <result property="expectedDeliveryDate" column="expected_delivery_date"/>
+        <result property="actualDeliveryDate" column="actual_delivery_date"/>
+        <result property="acceptanceDate" column="acceptance_date"/>
+        <result property="settlementDate" column="settlement_date"/>
+        <result property="applicantId" column="applicant_id"/>
+        <result property="applicantName" column="applicant_name"/>
+        <result property="applyDepartment" column="apply_department"/>
+        <result property="purchaseLeaderId" column="purchase_leader_id"/>
+        <result property="purchaseLeaderName" column="purchase_leader_name"/>
+        <result property="purchaseDepartment" column="purchase_department"/>
+        <result property="createTime" column="create_time"/>
+        <result property="updateTime" column="update_time"/>
+        <result property="createdBy" column="created_by"/>
+        <result property="updatedBy" column="updated_by"/>
+    </resultMap>
+
+    <!-- 分页查询采购交易列表 -->
+    <select id="selectTransactionPage" resultMap="CcdiPurchaseTransactionVOResult">
+        SELECT
+            purchase_id, purchase_category, project_name, subject_name, subject_desc,
+            purchase_qty, budget_amount, bid_amount, actual_amount, contract_amount, settlement_amount,
+            purchase_method, supplier_name, contact_person, contact_phone, supplier_uscc, supplier_bank_account,
+            apply_date, plan_approve_date, announce_date, bid_open_date, contract_sign_date,
+            expected_delivery_date, actual_delivery_date, acceptance_date, settlement_date,
+            applicant_id, applicant_name, apply_department, purchase_leader_id, purchase_leader_name, purchase_department,
+            created_by, create_time, updated_by, update_time
+        FROM ccdi_purchase_transaction
+        <where>
+            <if test="query.projectName != null and query.projectName != ''">
+                AND project_name LIKE CONCAT('%', #{query.projectName}, '%')
+            </if>
+            <if test="query.subjectName != null and query.subjectName != ''">
+                AND subject_name LIKE CONCAT('%', #{query.subjectName}, '%')
+            </if>
+            <if test="query.applicantName != null and query.applicantName != ''">
+                AND applicant_name LIKE CONCAT('%', #{query.applicantName}, '%')
+            </if>
+            <if test="query.applicantId != null and query.applicantId != ''">
+                AND applicant_id = #{query.applicantId}
+            </if>
+            <if test="query.applyDateStart != null">
+                AND apply_date &gt;= #{query.applyDateStart}
+            </if>
+            <if test="query.applyDateEnd != null">
+                AND apply_date &lt;= #{query.applyDateEnd}
+            </if>
+        </where>
+        ORDER BY create_time DESC
+    </select>
+
+    <!-- 查询采购交易详情 -->
+    <select id="selectTransactionById" resultMap="CcdiPurchaseTransactionVOResult">
+        SELECT
+            purchase_id, purchase_category, project_name, subject_name, subject_desc,
+            purchase_qty, budget_amount, bid_amount, actual_amount, contract_amount, settlement_amount,
+            purchase_method, supplier_name, contact_person, contact_phone, supplier_uscc, supplier_bank_account,
+            apply_date, plan_approve_date, announce_date, bid_open_date, contract_sign_date,
+            expected_delivery_date, actual_delivery_date, acceptance_date, settlement_date,
+            applicant_id, applicant_name, apply_department, purchase_leader_id, purchase_leader_name, purchase_department,
+            created_by, create_time, updated_by, update_time
+        FROM ccdi_purchase_transaction
+        WHERE purchase_id = #{purchaseId}
+    </select>
+
+    <!-- 批量插入采购交易数据 -->
+    <insert id="insertBatch">
+        INSERT INTO ccdi_purchase_transaction
+        (purchase_id, purchase_category, project_name, subject_name, subject_desc,
+         purchase_qty, budget_amount, bid_amount, actual_amount, contract_amount, settlement_amount,
+         purchase_method, supplier_name, contact_person, contact_phone, supplier_uscc, supplier_bank_account,
+         apply_date, plan_approve_date, announce_date, bid_open_date, contract_sign_date,
+         expected_delivery_date, actual_delivery_date, acceptance_date, settlement_date,
+         applicant_id, applicant_name, apply_department, purchase_leader_id, purchase_leader_name, purchase_department,
+         created_by, create_time, updated_by, update_time)
+        VALUES
+        <foreach collection="list" item="item" separator=",">
+            (#{item.purchaseId}, #{item.purchaseCategory}, #{item.projectName}, #{item.subjectName}, #{item.subjectDesc},
+            #{item.purchaseQty}, #{item.budgetAmount}, #{item.bidAmount}, #{item.actualAmount}, #{item.contractAmount}, #{item.settlementAmount},
+            #{item.purchaseMethod}, #{item.supplierName}, #{item.contactPerson}, #{item.contactPhone}, #{item.supplierUscc}, #{item.supplierBankAccount},
+            #{item.applyDate}, #{item.planApproveDate}, #{item.announceDate}, #{item.bidOpenDate}, #{item.contractSignDate},
+            #{item.expectedDeliveryDate}, #{item.actualDeliveryDate}, #{item.acceptanceDate}, #{item.settlementDate},
+            #{item.applicantId}, #{item.applicantName}, #{item.applyDepartment}, #{item.purchaseLeaderId}, #{item.purchaseLeaderName}, #{item.purchaseDepartment},
+            #{item.createdBy}, NOW(), #{item.updatedBy}, NOW())
+        </foreach>
+    </insert>
+
+    <!-- 批量更新采购交易数据（先删除再插入） -->
+    <update id="insertOrUpdateBatch">
+        <foreach collection="list" item="item" separator=";">
+            DELETE FROM ccdi_purchase_transaction WHERE purchase_id = #{item.purchaseId};
+            INSERT INTO ccdi_purchase_transaction
+            (purchase_id, purchase_category, project_name, subject_name, subject_desc,
+             purchase_qty, budget_amount, bid_amount, actual_amount, contract_amount, settlement_amount,
+             purchase_method, supplier_name, contact_person, contact_phone, supplier_uscc, supplier_bank_account,
+             apply_date, plan_approve_date, announce_date, bid_open_date, contract_sign_date,
+             expected_delivery_date, actual_delivery_date, acceptance_date, settlement_date,
+             applicant_id, applicant_name, apply_department, purchase_leader_id, purchase_leader_name, purchase_department,
+             created_by, create_time, updated_by, update_time)
+            VALUES
+            (#{item.purchaseId}, #{item.purchaseCategory}, #{item.projectName}, #{item.subjectName}, #{item.subjectDesc},
+            #{item.purchaseQty}, #{item.budgetAmount}, #{item.bidAmount}, #{item.actualAmount}, #{item.contractAmount}, #{item.settlementAmount},
+            #{item.purchaseMethod}, #{item.supplierName}, #{item.contactPerson}, #{item.contactPhone}, #{item.supplierUscc}, #{item.supplierBankAccount},
+            #{item.applyDate}, #{item.planApproveDate}, #{item.announceDate}, #{item.bidOpenDate}, #{item.contractSignDate},
+            #{item.expectedDeliveryDate}, #{item.actualDeliveryDate}, #{item.acceptanceDate}, #{item.settlementDate},
+            #{item.applicantId}, #{item.applicantName}, #{item.applyDepartment}, #{item.purchaseLeaderId}, #{item.purchaseLeaderName}, #{item.purchaseDepartment},
+            #{item.createdBy}, NOW(), #{item.updatedBy}, NOW())
+        </foreach>
+    </update>
+
+</mapper>