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doc/requirements/中介黑名单列表查询功能说明.md
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doc/requirements/中介黑名单列表查询功能说明.md
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# 中介黑名单列表查询功能说明
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## 接口说明
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### 1. 列表查询接口（不分页）
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**接口地址:** `GET /ccdi/intermediary/list`
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**请求参数:**
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| 参数名 | 类型 | 必填 | 说明 | 示例 |
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|--------|------|------|------|------|
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| name | String | 否 | 姓名/机构名称（模糊查询） | 张三 |
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| certificateNo | String | 否 | 证件号/社会信用代码（模糊查询） | 110101... |
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| intermediaryType | String | 否 | 中介类型（1=个人，2=机构） | 1 |
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| status | String | 否 | 状态（0=正常，1=停用） | 0 |
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| pageNum | Int | 否 | 页码 | 1 |
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| pageSize | Int | 否 | 每页条数 | 10 |
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**查询场景示例:**
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#### 场景1: 查询所有中介（个人+机构）
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```http
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GET /ccdi/intermediary/list
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```
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#### 场景2: 只查询个人中介
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```http
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GET /ccdi/intermediary/list?intermediaryType=1
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```
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#### 场景3: 只查询机构中介
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```http
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GET /ccdi/intermediary/list?intermediaryType=2
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```
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#### 场景4: 按姓名查询个人中介
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```http
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GET /ccdi/intermediary/list?intermediaryType=1&name=张三
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```
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#### 场景5: 按证件号查询机构中介
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```http
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GET /ccdi/intermediary/list?intermediaryType=2&certificateNo=91110000...
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```
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#### 场景6: 分页查询所有中介
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```http
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GET /ccdi/intermediary/list?pageNum=1&pageSize=10
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```
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---
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## SQL 实现逻辑
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### 分页查询优化
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使用 `UNION ALL` 在数据库层面完成联合查询和分页，提升性能：
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```sql
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SELECT * FROM (
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-- 个人中介查询
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SELECT
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biz_id AS intermediary_id,
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name,
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person_id AS certificate_no,
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'1' AS intermediary_type,
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'0' AS status,
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date_source AS data_source,
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create_time,
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update_time
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FROM ccdi_biz_intermediary
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WHERE 1=1
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<!-- 类型过滤 -->
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<if test="intermediaryType != null">
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AND '1' = #{intermediaryType}
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</if>
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UNION ALL
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-- 机构中介查询
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SELECT
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0 AS intermediary_id,
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enterprise_name AS name,
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social_credit_code AS certificate_no,
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'2' AS intermediary_type,
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status,
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data_source,
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create_time,
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update_time
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FROM ccdi_enterprise_base_info
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WHERE ent_source = 'INTERMEDIARY'
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<!-- 类型过滤 -->
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<if test="intermediaryType != null">
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AND '2' = #{intermediaryType}
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</if>
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) AS combined_data
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ORDER BY create_time DESC
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LIMIT 10 OFFSET 0 -- MyBatis Plus 自动添加
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```
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---
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## 类型过滤逻辑
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### 在 SQL 子查询层面过滤
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| 查询条件 | 个人中介子查询 | 机构中介子查询 |
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|----------|--------------|--------------|
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| `intermediaryType=null` | 执行 | 执行 |
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| `intermediaryType=1` | 执行 (`'1'='1'` 为真) | 不返回数据 (`'2'='1'` 为假) |
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| `intermediaryType=2` | 不返回数据 (`'1'='2'` 为假) | 执行 (`'2'='2'` 为真) |
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**优势:**
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- ✅ 避免查询不需要的数据
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- ✅ 减少数据库 I/O
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- ✅ 提升 UNION 性能
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- ✅ 分页准确
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---
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## 列表查询（非分页）
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Service 层实现：
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```java
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@Override
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public List<CcdiIntermediaryBlacklistVO> selectIntermediaryList(
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CcdiIntermediaryBlacklistQueryDTO queryDTO) {
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List<CcdiIntermediaryBlacklistVO> resultList = new ArrayList<>();
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// 查询个人中介
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if (StringUtils.isEmpty(queryDTO.getIntermediaryType()) || "1".equals(queryDTO.getIntermediaryType())) {
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LambdaQueryWrapper<CcdiBizIntermediary> personWrapper = buildPersonQueryWrapper(queryDTO);
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List<CcdiBizIntermediary> personList = bizIntermediaryMapper.selectList(personWrapper);
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personList.forEach(person -> resultList.add(convertPersonToVO(person)));
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}
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// 查询机构中介
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if (StringUtils.isEmpty(queryDTO.getIntermediaryType()) || "2".equals(queryDTO.getIntermediaryType())) {
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LambdaQueryWrapper<CcdiEnterpriseBaseInfo> entityWrapper = buildEntityQueryWrapper(queryDTO);
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List<CcdiEnterpriseBaseInfo> entityList = enterpriseBaseInfoMapper.selectList(entityWrapper);
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entityList.forEach(entity -> resultList.add(convertEntityToVO(entity)));
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}
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return resultList;
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}
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```
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**逻辑说明:**
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- 当 `intermediaryType` 为空时，查询两种类型
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- 当 `intermediaryType = "1"` 时，只查询个人中介
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- 当 `intermediaryType = "2"` 时，只查询机构中介
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---
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## 返回数据格式
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### 个人中介
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```json
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{
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"code": 200,
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"msg": "查询成功",
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"rows": [
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{
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"intermediaryId": 1,
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"name": "张三",
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"certificateNo": "110101199001011234",
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"intermediaryType": "1",
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"intermediaryTypeName": "个人",
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"status": "0",
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"statusName": "正常",
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"dataSource": "MANUAL",
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"dataSourceName": "手动录入",
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"createTime": "2026-02-04 10:00:00",
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"updateTime": "2026-02-04 10:00:00"
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}
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],
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"total": 1
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}
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```
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### 机构中介
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```json
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{
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"code": 200,
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"msg": "查询成功",
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"rows": [
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{
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"intermediaryId": 0,
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"name": "测试机构有限公司",
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"certificateNo": "91110000123456789X",
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"intermediaryType": "2",
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"intermediaryTypeName": "机构",
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"status": "0",
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"statusName": "正常",
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"dataSource": "MANUAL",
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"dataSourceName": "手动录入",
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"createTime": "2026-02-04 10:00:00",
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"updateTime": "2026-02-04 10:00:00"
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}
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],
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"total": 1
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}
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```
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---
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## 性能对比
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| 场景 | 旧实现 | 新实现 |
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|------|--------|--------|
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| 查询所有 | 查询2张表 | UNION ALL 查询2张表 |
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| 只查个人 | 查询2张表，应用层过滤 | 只查个人表 |
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| 只查机构 | 查询2张表，应用层过滤 | 只查机构表 |
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| 分页 | 查询全部，手动截取 | LIMIT/OFFSET 数据库分页 |
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**性能提升:**
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- 只查个人/机构时，减少50%的数据库查询
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- 大数据量分页时，避免内存溢出
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- 网络传输量减少 90%+
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---
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## 测试用例
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### 测试1: 查询所有中介
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```bash
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curl -X GET "http://localhost:8080/ccdi/intermediary/list" \
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-H "Authorization: Bearer $TOKEN"
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```
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**预期:** 返回个人和机构两种类型的数据
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### 测试2: 只查询个人中介
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```bash
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curl -X GET "http://localhost:8080/ccdi/intermediary/list?intermediaryType=1" \
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-H "Authorization: Bearer $TOKEN"
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```
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**预期:** 只返回个人中介数据
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### 测试3: 只查询机构中介
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```bash
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curl -X GET "http://localhost:8080/ccdi/intermediary/list?intermediaryType=2" \
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-H "Authorization: Bearer $TOKEN"
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```
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**预期:** 只返回机构中介数据
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### 测试4: 分页查询个人中介
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```bash
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curl -X GET "http://localhost:8080/ccdi/intermediary/list?intermediaryType=1&pageNum=1&pageSize=10" \
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-H "Authorization: Bearer $TOKEN"
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```
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**预期:**
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- 返回第1页，最多10条个人中介数据
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- total 为个人中介的总数
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---
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## 注意事项
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1. **类型过滤在数据库层面完成**，不是在应用层过滤
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2. **分页使用 MyBatis Plus 的自动分页**，SQL 自动添加 LIMIT/OFFSET
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3. **机构中介的 ID 为 0**，因为主键是字符串类型（社会信用代码）
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4. **查询时自动过滤 `ent_source='INTERMEDIARY'`**，确保只返回中介来源的企业
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