diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/BureauUnitController.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/BureauUnitController.java
index 784ba8eb..54286bc5 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/BureauUnitController.java
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/BureauUnitController.java
@@ -19,7 +19,6 @@ import org.springframework.web.bind.annotation.RestController;
 public class BureauUnitController {
     private final IEfcodeVirtualUnitService efcodeVirtualUnitService;
 
-    @SaCheckPermission("enforcementcode:virtualUnit:list")
     @GetMapping("/users")
     public TableDataInfo<UnitUserVo> queryUsers(
         @RequestParam(required = false) String sysDeptId,
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/EnterpriseSearchController.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/EnterpriseSearchController.java
index 04bc5f0b..c10a7f8c 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/EnterpriseSearchController.java
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/controller/EnterpriseSearchController.java
@@ -1,4 +1,86 @@
 package com.zdxt.enforcementcode.controller;
 
-public class EnterpriseSearchController {
+import com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo;
+import com.zdxt.enforcementcode.service.IEnterpriseInformationService;
+import lombok.RequiredArgsConstructor;
+import org.dromara.common.core.domain.R;
+import org.dromara.common.web.core.BaseController;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 企业搜索
+ */
+@Validated
+@RequiredArgsConstructor
+@RestController
+@RequestMapping("/enforcementcode/enterpriseSearch")
+public class EnterpriseSearchController extends BaseController {
+
+    private final IEnterpriseInformationService enterpriseInformationService;
+
+    /**
+     * 根据企业名称模糊搜索
+     *
+     * @param enterpriseName 企业名称关键字（>=3个字符）
+     */
+    @GetMapping("/searchUnionByEnterpriseName")
+    public R<List<EnterpriseSearchVo>> searchUnionByEnterpriseName(@RequestParam String enterpriseName) {
+        return R.ok(enterpriseInformationService.searchUnionByEnterpriseName(enterpriseName));
+    }
+
+    /**
+     * 根据企业信用代码查询
+     *
+      * @param enterpriseNumber 企业统一社会信用代码 / 纳税识别号
+     */
+    @GetMapping("/searchUnionByEnterpriseNumber")
+    public R<List<EnterpriseSearchVo>> searchUnionByEnterpriseNumber(@RequestParam String enterpriseNumber) {
+        return R.ok(enterpriseInformationService.searchUnionByEnterpriseNumber(enterpriseNumber));
+    }
+
+    /**
+     * 仅在 enterprise_information 表中按企业名称模糊搜索
+     *
+     * @param enterpriseName 企业名称关键字（>=3个字符）
+     */
+    @GetMapping("/searchEnterpriseInfoByName")
+    public R<List<EnterpriseSearchVo>> searchEnterpriseInfoByName(@RequestParam String enterpriseName) {
+        return R.ok(enterpriseInformationService.searchEnterpriseInfoByName(enterpriseName));
+    }
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业名称前缀搜索
+     *
+     * @param enterpriseName 企业名称关键字（>=3个字符）
+     */
+    @GetMapping("/searchSsztByName")
+    public R<List<EnterpriseSearchVo>> searchSsztByName(@RequestParam String enterpriseName) {
+        return R.ok(enterpriseInformationService.searchSsztByName(enterpriseName));
+    }
+
+    /**
+     * 仅在 enterprise_information 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     */
+    @GetMapping("/searchEnterpriseInfoByNumber")
+    public R<List<EnterpriseSearchVo>> searchEnterpriseInfoByNumber(@RequestParam String enterpriseNumber) {
+        return R.ok(enterpriseInformationService.searchEnterpriseInfoByNumber(enterpriseNumber));
+    }
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     */
+    @GetMapping("/searchSsztByNumber")
+    public R<List<EnterpriseSearchVo>> searchSsztByNumber(@RequestParam String enterpriseNumber) {
+        return R.ok(enterpriseInformationService.searchSsztByNumber(enterpriseNumber));
+    }
 }
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/domain/vo/EnterpriseSearchVo.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/domain/vo/EnterpriseSearchVo.java
new file mode 100644
index 00000000..aa9a8605
--- /dev/null
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/domain/vo/EnterpriseSearchVo.java
@@ -0,0 +1,26 @@
+package com.zdxt.enforcementcode.domain.vo;
+
+import lombok.Data;
+
+import java.io.Serial;
+import java.io.Serializable;
+
+/**
+ * 企业名称搜索结果视图对象
+ */
+@Data
+public class EnterpriseSearchVo implements Serializable {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 企业纳税识别号
+     */
+    private String enterpriseNumber;
+
+    /**
+     * 企业名称
+     */
+    private String enterpriseName;
+}
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/mapper/EnterpriseInformationMapper.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/mapper/EnterpriseInformationMapper.java
index 9b03905f..dccba19e 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/mapper/EnterpriseInformationMapper.java
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/mapper/EnterpriseInformationMapper.java
@@ -2,9 +2,13 @@ package com.zdxt.enforcementcode.mapper;
 
 import com.zdxt.enforcementcode.domain.EnterpriseInformation;
 import com.zdxt.enforcementcode.domain.vo.EnterpriseInformationVo;
+import com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
 import org.dromara.common.mybatis.core.mapper.BaseMapperPlus;
 
+import java.util.List;
+
 /**
  * 企业端-企业信息Mapper接口
  *
@@ -14,4 +18,51 @@ import org.dromara.common.mybatis.core.mapper.BaseMapperPlus;
 @Mapper
 public interface EnterpriseInformationMapper extends BaseMapperPlus<EnterpriseInformation, EnterpriseInformationVo> {
 
+    /**
+     * 根据企业名称关键字联合搜索（enterprise_information + sszt_jbxx110497_new）
+     *
+     * @param keyword 去除深圳/深圳市后的关键字
+     * @return 前20条搜索结果
+     */
+    List<EnterpriseSearchVo> searchUnionByEnterpriseName(@Param("keyword") String keyword);
+
+    /**
+     * 根据企业统一社会信用代码联合查询（enterprise_information + sszt_jbxx110497_new）
+     *
+     * @param enterpriseNumber 企业信用代码（统一社会信用代码 / 纳税识别号）
+     * @return 查询结果
+     */
+    List<EnterpriseSearchVo> searchUnionByEnterpriseNumber(@Param("enterpriseNumber") String enterpriseNumber);
+
+    /**
+     * 仅在 enterprise_information 表中按企业名称模糊搜索
+     *
+     * @param keyword 去除深圳/深圳市后的关键字
+     * @return 前20条搜索结果
+     */
+    List<EnterpriseSearchVo> searchEnterpriseInfoByName(@Param("keyword") String keyword);
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业名称前缀搜索（深圳/深圳市 前缀）
+     *
+     * @param keyword 去除深圳/深圳市后的关键字
+     * @return 前20条搜索结果
+     */
+    List<EnterpriseSearchVo> searchSsztByName(@Param("keyword") String keyword);
+
+    /**
+     * 仅在 enterprise_information 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     * @return 前20条搜索结果
+     */
+    List<EnterpriseSearchVo> searchEnterpriseInfoByNumber(@Param("enterpriseNumber") String enterpriseNumber);
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     * @return 前20条搜索结果
+     */
+    List<EnterpriseSearchVo> searchSsztByNumber(@Param("enterpriseNumber") String enterpriseNumber);
 }
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/IEnterpriseInformationService.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/IEnterpriseInformationService.java
index 2a3cfb58..4e107f87 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/IEnterpriseInformationService.java
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/IEnterpriseInformationService.java
@@ -2,6 +2,7 @@ package com.zdxt.enforcementcode.service;
 
 import com.zdxt.enforcementcode.domain.bo.EnterpriseInformationBo;
 import com.zdxt.enforcementcode.domain.vo.EnterpriseInformationVo;
+import com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo;
 import com.zdxt.enforcementcode.domain.vo.QrCodeGenerateHistoryVo;
 import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.dromara.common.mybatis.core.page.PageQuery;
@@ -106,4 +107,55 @@ public interface IEnterpriseInformationService {
      * @return 二维码生成历史记录
      */
     QrCodeGenerateHistoryVo forceGenerateQrCode(String type, String enterpriseNumber, String formModule, String reasonsChange);
+
+    /**
+     * 根据企业名称模糊搜索（联合 enterprise_information 和 sszt_jbxx110497_new 两张表）
+     * <p>自动去除"深圳市"、"深圳"前缀，字数>=3时才执行搜索，返回前20条</p>
+     *
+     * @param enterpriseName 企业名称关键字
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchUnionByEnterpriseName(String enterpriseName);
+
+    /**
+     * 根据企业统一社会信用代码联合查询（enterprise_information + sszt_jbxx110497_new）
+     *
+     * @param enterpriseNumber 企业信用代码
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchUnionByEnterpriseNumber(String enterpriseNumber);
+
+    /**
+     * 仅在 enterprise_information 表中按企业名称模糊搜索
+     * <p>自动去除"深圳市"、"深圳"前缀，字数>=3时才执行搜索</p>
+     *
+     * @param enterpriseName 企业名称关键字
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchEnterpriseInfoByName(String enterpriseName);
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业名称前缀搜索
+     * <p>自动去除"深圳市"、"深圳"前缀，字数>=3时才执行搜索</p>
+     *
+     * @param enterpriseName 企业名称关键字
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchSsztByName(String enterpriseName);
+
+    /**
+     * 仅在 enterprise_information 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchEnterpriseInfoByNumber(String enterpriseNumber);
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业信用代码前缀查询
+     *
+     * @param enterpriseNumber 企业信用代码
+     * @return 搜索结果列表
+     */
+    List<EnterpriseSearchVo> searchSsztByNumber(String enterpriseNumber);
 }
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/impl/EnterpriseInformationServiceImpl.java b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/impl/EnterpriseInformationServiceImpl.java
index c63389a0..3206cedc 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/impl/EnterpriseInformationServiceImpl.java
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/java/com/zdxt/enforcementcode/service/impl/EnterpriseInformationServiceImpl.java
@@ -4,6 +4,7 @@ import com.zdxt.enforcementcode.domain.EnterpriseInformation;
 import com.zdxt.enforcementcode.domain.bo.EnterpriseInformationBo;
 import com.zdxt.enforcementcode.domain.bo.QrCodeGenerateHistoryBo;
 import com.zdxt.enforcementcode.domain.vo.EnterpriseInformationVo;
+import com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo;
 import com.zdxt.enforcementcode.domain.vo.QrCodeGenerateHistoryVo;
 import com.zdxt.enforcementcode.mapper.EnterpriseInformationMapper;
 import com.zdxt.enforcementcode.service.IEnterpriseInformationService;
@@ -265,4 +266,93 @@ public class EnterpriseInformationServiceImpl implements IEnterpriseInformationS
 
         return qrCodeVo;
     }
+
+    /**
+     * 根据企业名称模糊搜索
+     * <p>自动去除"深圳市"、"深圳"前缀，字数>=3时才执行搜索</p>
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchUnionByEnterpriseName(String enterpriseName) {
+        if (StringUtils.isBlank(enterpriseName)) {
+            return List.of();
+        }
+        // 去除"深圳市"和"深圳"前缀（先去"深圳市"避免残留"市"字）
+        String keyword = enterpriseName.trim()
+            .replace("深圳市", "")
+            .replace("深圳", "");
+        if (keyword.length() < 3) {
+            return List.of();
+        }
+        return baseMapper.searchUnionByEnterpriseName(keyword);
+    }
+
+    /**
+     * 根据企业统一社会信用代码联合查询
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchUnionByEnterpriseNumber(String creditCode) {
+        if (StringUtils.isBlank(creditCode)) {
+            return List.of();
+        }
+        return baseMapper.searchUnionByEnterpriseNumber(creditCode.trim());
+    }
+
+    /**
+     * 仅在 enterprise_information 表中按企业名称模糊搜索
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchEnterpriseInfoByName(String enterpriseName) {
+        String keyword = normalizeNameKeyword(enterpriseName);
+        if (keyword == null) {
+            return List.of();
+        }
+        return baseMapper.searchEnterpriseInfoByName(keyword);
+    }
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业名称前缀搜索
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchSsztByName(String enterpriseName) {
+        String keyword = normalizeNameKeyword(enterpriseName);
+        if (keyword == null) {
+            return List.of();
+        }
+        return baseMapper.searchSsztByName(keyword);
+    }
+
+    /**
+     * 仅在 enterprise_information 表中按企业信用代码前缀查询
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchEnterpriseInfoByNumber(String enterpriseNumber) {
+        if (StringUtils.isBlank(enterpriseNumber)) {
+            return List.of();
+        }
+        return baseMapper.searchEnterpriseInfoByNumber(enterpriseNumber.trim());
+    }
+
+    /**
+     * 仅在 sszt_jbxx110497_new 表中按企业信用代码前缀查询
+     */
+    @Override
+    public List<EnterpriseSearchVo> searchSsztByNumber(String enterpriseNumber) {
+        if (StringUtils.isBlank(enterpriseNumber)) {
+            return List.of();
+        }
+        return baseMapper.searchSsztByNumber(enterpriseNumber.trim());
+    }
+
+    /**
+     * 统一处理企业名称关键字：去除"深圳市"/"深圳"前缀，长度<3返回 null
+     */
+    private String normalizeNameKeyword(String enterpriseName) {
+        if (StringUtils.isBlank(enterpriseName)) {
+            return null;
+        }
+        String keyword = enterpriseName.trim()
+            .replace("深圳市", "")
+            .replace("深圳", "");
+        return keyword.length() < 3 ? null : keyword;
+    }
 }
diff --git a/zdxt-modules/zdxt-enforcement-code/src/main/resources/mapper/enforcementcode/EnterpriseInformationMapper.xml b/zdxt-modules/zdxt-enforcement-code/src/main/resources/mapper/enforcementcode/EnterpriseInformationMapper.xml
index ddeacd3a..9f4226ec 100644
--- a/zdxt-modules/zdxt-enforcement-code/src/main/resources/mapper/enforcementcode/EnterpriseInformationMapper.xml
+++ b/zdxt-modules/zdxt-enforcement-code/src/main/resources/mapper/enforcementcode/EnterpriseInformationMapper.xml
@@ -3,4 +3,65 @@
     PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.zdxt.enforcementcode.mapper.EnterpriseInformationMapper">
+
+    <select id="searchUnionByEnterpriseName" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        (
+            SELECT enterprise_number, enterprise_name
+            FROM enterprise_information
+            WHERE enterprise_name LIKE CONCAT('%', #{keyword}, '%')
+        )
+        UNION
+        (
+            SELECT TYSHXYDM AS enterprise_number, QYMC AS enterprise_name
+            FROM sszt_jbxx110497_new
+            WHERE QYMC LIKE CONCAT('深圳', #{keyword}, '%')
+               OR QYMC LIKE CONCAT('深圳市', #{keyword}, '%')
+        )
+        LIMIT 20
+    </select>
+
+    <select id="searchUnionByEnterpriseNumber" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        (
+            SELECT enterprise_number, enterprise_name
+            FROM enterprise_information
+            WHERE enterprise_number LIKE CONCAT(#{enterpriseNumber}, '%')
+        )
+        UNION
+        (
+            SELECT TYSHXYDM AS enterprise_number, QYMC AS enterprise_name
+            FROM sszt_jbxx110497_new
+            WHERE TYSHXYDM LIKE CONCAT(#{enterpriseNumber}, '%')
+        )
+        LIMIT 20
+    </select>
+
+    <select id="searchEnterpriseInfoByName" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        SELECT enterprise_number, enterprise_name
+        FROM enterprise_information
+        WHERE enterprise_name LIKE CONCAT('%', #{keyword}, '%')
+        LIMIT 20
+    </select>
+
+    <select id="searchSsztByName" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        SELECT TYSHXYDM AS enterprise_number, QYMC AS enterprise_name
+        FROM sszt_jbxx110497_new
+        WHERE QYMC LIKE CONCAT('深圳', #{keyword}, '%')
+           OR QYMC LIKE CONCAT('深圳市', #{keyword}, '%')
+        LIMIT 20
+    </select>
+
+    <select id="searchEnterpriseInfoByNumber" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        SELECT enterprise_number, enterprise_name
+        FROM enterprise_information
+        WHERE enterprise_number LIKE CONCAT(#{enterpriseNumber}, '%')
+        LIMIT 20
+    </select>
+
+    <select id="searchSsztByNumber" resultType="com.zdxt.enforcementcode.domain.vo.EnterpriseSearchVo">
+        SELECT TYSHXYDM AS enterprise_number, QYMC AS enterprise_name
+        FROM sszt_jbxx110497_new
+        WHERE TYSHXYDM LIKE CONCAT(#{enterpriseNumber}, '%')
+        LIMIT 20
+    </select>
+
 </mapper>
diff --git a/zdxt-web-server/zdxt-admin-web-server/src/test/java/com/zdxt/rest/test/EnterpriseSearchControllerTest.java b/zdxt-web-server/zdxt-admin-web-server/src/test/java/com/zdxt/rest/test/EnterpriseSearchControllerTest.java
new file mode 100644
index 00000000..e2d3c46e
--- /dev/null
+++ b/zdxt-web-server/zdxt-admin-web-server/src/test/java/com/zdxt/rest/test/EnterpriseSearchControllerTest.java
@@ -0,0 +1,542 @@
+package com.zdxt.rest.test;
+
+import cn.dev33.satoken.context.mock.SaTokenContextMockUtil;
+import cn.dev33.satoken.stp.parameter.SaLoginParameter;
+import cn.dev33.satoken.stp.StpUtil;
+import org.dromara.ZdxtAdminApplication;
+import org.dromara.common.core.domain.model.LoginUser;
+import org.dromara.common.satoken.utils.LoginHelper;
+import org.junit.jupiter.api.*;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+
+import java.nio.charset.StandardCharsets;
+import java.util.HashSet;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+/**
+ * EnterpriseSearchController 企业搜索接口测试
+ * <p>
+ * 覆盖以下接口：
+ * 1. GET /enforcementcode/enterpriseSearch/searchByName                       - 按名称联合搜索（UNION）
+ * 2. GET /enforcementcode/enterpriseSearch/searchUnionByEnterpriseNumber      - 按信用代码联合搜索（UNION）
+ * 3. GET /enforcementcode/enterpriseSearch/searchEnterpriseInfoByName         - 仅在 enterprise_information 按名称搜索
+ * 4. GET /enforcementcode/enterpriseSearch/searchSsztByName                   - 仅在 sszt_jbxx110497_new 按名称搜索
+ * 5. GET /enforcementcode/enterpriseSearch/searchEnterpriseInfoByNumber       - 仅在 enterprise_information 按信用代码搜索
+ * 6. GET /enforcementcode/enterpriseSearch/searchSsztByNumber                 - 仅在 sszt_jbxx110497_new 按信用代码搜索
+ * </p>
+ *
+ * @author zdxt
+ */
+@SpringBootTest(classes = ZdxtAdminApplication.class)
+@AutoConfigureMockMvc
+@ActiveProfiles({"dev", "dev-cust-zrb"})
+@DisplayName("EnterpriseSearchController 企业搜索接口测试")
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+public class EnterpriseSearchControllerTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    private static final String BASE_URL = "/enforcementcode/enterpriseSearch";
+    private static final String TEST_CLIENT_ID = "e5cd7e4891bf95d1d19206ce24a7b32e";
+    /** 测试用用户ID */
+    private static final Long TEST_USER_ID = 1L;
+
+    /** 登录后获取的 token */
+    private String token;
+
+    @BeforeEach
+    public void setUp() {
+        // 初始化 Sa-Token 上下文
+        SaTokenContextMockUtil.setMockContext();
+
+        // 设置模拟请求上下文
+        MockHttpServletRequest mockRequest = new MockHttpServletRequest();
+        mockRequest.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36");
+        RequestContextHolder.setRequestAttributes(new ServletRequestAttributes(mockRequest));
+
+        // 构造测试用登录用户
+        LoginUser loginUser = new LoginUser();
+        loginUser.setUserId(TEST_USER_ID);
+        loginUser.setUserType("sys_user");
+        loginUser.setTenantId("000000");
+        loginUser.setUsername("test_admin");
+        loginUser.setNickname("测试管理员");
+        loginUser.setDeptId("103");
+        loginUser.setDeptName("测试部门");
+        loginUser.setRolePermission(new HashSet<>());
+        loginUser.setMenuPermission(new HashSet<>());
+
+        // 模拟登录获取 token
+        SaLoginParameter param = new SaLoginParameter();
+        param.setExtra(LoginHelper.CLIENT_KEY, TEST_CLIENT_ID);
+        LoginHelper.login(loginUser, param);
+        token = StpUtil.getTokenValue();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        try {
+            StpUtil.logout();
+        } catch (Exception ignored) {
+        }
+        RequestContextHolder.resetRequestAttributes();
+        SaTokenContextMockUtil.clearContext();
+    }
+
+    // ==================== /searchByName 联合搜索（按名称） ====================
+
+    @DisplayName("UNION-按名称 - 正常请求（>=3字符）")
+    @Test
+    @Order(1)
+    public void testSearchByName() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "鑫蓝光纸业"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        String body = result.getResponse().getContentAsString(StandardCharsets.UTF_8);
+        System.out.println("UNION-按名称接口响应: " + body);
+    }
+
+    @DisplayName("UNION-按名称 - 自动去除'深圳市'前缀")
+    @Test
+    @Order(1)
+    public void testSearchByNameStripShenzhenShi() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳市强达电路"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray());
+    }
+
+    @DisplayName("UNION-按名称 - 自动去除'深圳'前缀")
+    @Test
+    @Order(1)
+    public void testSearchByNameStripShenzhen() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳康泰生物"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray());
+    }
+
+    @DisplayName("UNION-按名称 - 关键字过短返回空列表")
+    @Test
+    @Order(1)
+    public void testSearchByNameTooShort() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳市AB"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("UNION-按名称 - 缺少参数返回 400")
+    @Test
+    @Order(1)
+    public void testSearchByNameMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("UNION-按名称 - 不存在关键字返回空列表")
+    @Test
+    @Order(1)
+    public void testSearchByNameNonExist() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "不存在的企业关键字XYZ123"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("UNION-按名称 - LIMIT 20 验证")
+    @Test
+    @Order(1)
+    public void testSearchByNameLimit20() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "有限公司"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+        System.out.println("UNION-按名称返回条数：" + count);
+    }
+
+    // ==================== /searchUnionByEnterpriseNumber 联合搜索（按信用代码） ====================
+
+    @DisplayName("UNION-按信用代码 - 正常请求")
+    @Test
+    @Order(2)
+    public void testSearchUnionByEnterpriseNumber() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "91440300"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        System.out.println("UNION-按信用代码接口响应: "
+            + result.getResponse().getContentAsString(StandardCharsets.UTF_8));
+    }
+
+    @DisplayName("UNION-按信用代码 - 短前缀匹配多条但≤20")
+    @Test
+    @Order(2)
+    public void testSearchUnionByEnterpriseNumberPrefix() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "9144"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+    }
+
+    @DisplayName("UNION-按信用代码 - 完整代码")
+    @Test
+    @Order(2)
+    public void testSearchUnionByEnterpriseNumberFullCode() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "91440300788302281W"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray());
+    }
+
+    @DisplayName("UNION-按信用代码 - 缺少参数返回 400")
+    @Test
+    @Order(2)
+    public void testSearchUnionByEnterpriseNumberMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("UNION-按信用代码 - 不存在代码返回空")
+    @Test
+    @Order(2)
+    public void testSearchUnionByEnterpriseNumberNonExist() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchUnionByEnterpriseNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "ZZZZZZZZZZZZZZZZZZ"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    // ==================== /searchEnterpriseInfoByName 单表-按名称 ====================
+
+    @DisplayName("单表 enterprise_information 按名称 - 正常请求")
+    @Test
+    @Order(3)
+    public void testSearchEnterpriseInfoByName() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "鑫蓝光纸业"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        System.out.println("单表 enterprise_information 按名称响应: "
+            + result.getResponse().getContentAsString(StandardCharsets.UTF_8));
+    }
+
+    @DisplayName("单表 enterprise_information 按名称 - 去前缀后过短返回空")
+    @Test
+    @Order(3)
+    public void testSearchEnterpriseInfoByNameTooShort() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳市A"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("单表 enterprise_information 按名称 - 缺少参数返回 400")
+    @Test
+    @Order(3)
+    public void testSearchEnterpriseInfoByNameMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("单表 enterprise_information 按名称 - LIMIT 20")
+    @Test
+    @Order(3)
+    public void testSearchEnterpriseInfoByNameLimit20() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "有限公司"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+    }
+
+    // ==================== /searchSsztByName 单表 sszt 按名称 ====================
+
+    @DisplayName("单表 sszt 按名称 - 正常请求（带'深圳市'前缀）")
+    @Test
+    @Order(4)
+    public void testSearchSsztByName() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchSsztByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳市强达电路"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        System.out.println("单表 sszt 按名称响应: "
+            + result.getResponse().getContentAsString(StandardCharsets.UTF_8));
+    }
+
+    @DisplayName("单表 sszt 按名称 - 去前缀后过短返回空")
+    @Test
+    @Order(4)
+    public void testSearchSsztByNameTooShort() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchSsztByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "深圳"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("单表 sszt 按名称 - 缺少参数返回 400")
+    @Test
+    @Order(4)
+    public void testSearchSsztByNameMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchSsztByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("单表 sszt 按名称 - LIMIT 20")
+    @Test
+    @Order(4)
+    public void testSearchSsztByNameLimit20() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchSsztByName")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseName", "有限公司"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+    }
+
+    // ==================== /searchEnterpriseInfoByNumber 单表 enterprise_info 按信用代码 ====================
+
+    @DisplayName("单表 enterprise_information 按信用代码 - 正常前缀")
+    @Test
+    @Order(5)
+    public void testSearchEnterpriseInfoByNumber() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "91440300"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        System.out.println("单表 enterprise_info 按信用代码响应: "
+            + result.getResponse().getContentAsString(StandardCharsets.UTF_8));
+    }
+
+    @DisplayName("单表 enterprise_information 按信用代码 - 缺少参数返回 400")
+    @Test
+    @Order(5)
+    public void testSearchEnterpriseInfoByNumberMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("单表 enterprise_information 按信用代码 - 不存在代码返回空")
+    @Test
+    @Order(5)
+    public void testSearchEnterpriseInfoByNumberNonExist() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "ZZZZZZZZZZZZZZZZZZ"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("单表 enterprise_information 按信用代码 - LIMIT 20")
+    @Test
+    @Order(5)
+    public void testSearchEnterpriseInfoByNumberLimit20() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchEnterpriseInfoByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "9144"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+    }
+
+    // ==================== /searchSsztByNumber 单表 sszt 按信用代码 ====================
+
+    @DisplayName("单表 sszt 按信用代码 - 正常前缀")
+    @Test
+    @Order(6)
+    public void testSearchSsztByNumber() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchSsztByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "91440300"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.code").value(200))
+            .andExpect(jsonPath("$.data").isArray())
+            .andReturn();
+
+        System.out.println("单表 sszt 按信用代码响应: "
+            + result.getResponse().getContentAsString(StandardCharsets.UTF_8));
+    }
+
+    @DisplayName("单表 sszt 按信用代码 - 缺少参数返回 400")
+    @Test
+    @Order(6)
+    public void testSearchSsztByNumberMissingParam() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchSsztByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID))
+            .andDo(print())
+            .andExpect(status().isBadRequest());
+    }
+
+    @DisplayName("单表 sszt 按信用代码 - 不存在代码返回空")
+    @Test
+    @Order(6)
+    public void testSearchSsztByNumberNonExist() throws Exception {
+        mockMvc.perform(get(BASE_URL + "/searchSsztByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "ZZZZZZZZZZZZZZZZZZ"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.data.length()").value(0));
+    }
+
+    @DisplayName("单表 sszt 按信用代码 - LIMIT 20")
+    @Test
+    @Order(6)
+    public void testSearchSsztByNumberLimit20() throws Exception {
+        MvcResult result = mockMvc.perform(get(BASE_URL + "/searchSsztByNumber")
+                .header("Authorization", "Bearer " + token)
+                .header("clientid", TEST_CLIENT_ID)
+                .param("enterpriseNumber", "9144"))
+            .andDo(print())
+            .andExpect(status().isOk())
+            .andReturn();
+
+        int count = countOccurrences(result.getResponse().getContentAsString(StandardCharsets.UTF_8),
+            "\"enterpriseNumber\"");
+        Assertions.assertTrue(count <= 20, "LIMIT 20 校验失败，count=" + count);
+    }
+
+    // ==================== 工具方法 ====================
+
+    /**
+     * 统计字符串中子串出现次数
+     */
+    private int countOccurrences(String text, String sub) {
+        if (text == null || sub == null || sub.isEmpty()) {
+            return 0;
+        }
+        int count = 0;
+        int idx = 0;
+        while ((idx = text.indexOf(sub, idx)) != -1) {
+            count++;
+            idx += sub.length();
+        }
+        return count;
+    }
+}