摘要：本文分享了KingbaseES V8.6数据库与SpringBoot 2.7.x框架的集成实战经验。内容包括：1. 环境准备（Ubuntu系统安装配置、驱动获取方式）；2. JDBC基础操作（连接、查询、事务处理）；3. SpringBoot项目完整配置（pom依赖、数据源配置）；4. MyBatis-Plus集成（实体类、Mapper、Service层实现）；5. RESTful接口开发示例。文章提供了详细的代码示例，涵盖从数据库安装到应用开发的完整流程，帮助开发者快速实现国产数据库适配。目录

前言

一、环境准备与驱动获取

1.1 数据库安装与配置

1.2 JDBC驱动获取与配置

1.3 创建测试数据库

二、基础JDBC连接与操作

2.1 最基础的JDBC连接示例

2.2 查询测试

2.3 新增测试

2.4 删除测试

2.5 大数据分配处理

三、Spring Boot集成方案

3.1 完整项目配置

3.2 application.yml配置

3.3 实体类与Mapper

3.4 服务层与控制层

四、总结

前言最近公司项目需要适配国产数据库，经过调研选择了电科金仓的KingbaseES。前前后后折腾了两周，踩了无数坑，从驱动配置到性能调优，每个环节都有故事。本文基于KingbaseES V8.6版本，JDK 1.8环境，Spring Boot 2.7.x框架，分享完整的实战经验。希望能帮助兄弟们少走弯路。

一、环境准备与驱动获取1.1 数据库安装与配置首先需要在服务器上安装KingbaseES数据库。这里以Ubuntu环境为例：

# 创建用户 useradd kingbase passwd kingbase # 创建安装目录 mkdir -p /opt/kingbase/ES/V8 chown -R kingbase:kingbase /opt/kingbase # 解压安装包（假设安装包已经下载到/opt/software） cd /opt/software tar -xvf KingbaseES_V008R006C007B0024_Lin64_single_install.tar.gz # 开始安装 ./setup.sh -i console安装过程中需要注意：

选择"完全安装"，包含所有组件数据目录建议放在独立磁盘，如/kingbase/data端口默认54321，如果冲突需要修改字符集选择UTF8，避免中文乱码我往期作品有2篇文章分别详细介绍windows10和ubunu系统下安装步骤，大家有需要可以去参考参考：

零改造迁移实录：2000+存储过程从SQL Server滑入KingbaseES V9R4C12的72小时

在Ubuntu服务器上安装KingbaseES V009R002C012（Orable兼容版）数据库过程详细记录

1.2 JDBC驱动获取与配置Kingbase的JDBC驱动获取比较麻烦，有几种方式：

方式1：官网下载https://www.kingbase.com.cn/download.html 访问电科金仓官网（需注册账号）：

wget https://www.kingbase.com.cn/download/jdbc/kingbase8-8.6.0.jar方式2：安装目录获取 安装完成后，驱动位于：

/opt/kingbase/ES/V8/Interface/jdbc/kingbase8-8.6.0.jar方式3：Maven仓库（推荐） 如果公司搭建了私有仓库，可以上传后使用：

cn.com.kingbase kingbase8 8.6.0 1.3 创建测试数据库个人建议创建一个单独数据库，不然跟之前表有可能跟系统库冲突，如下图：

-- 连接数据库 ksql -U system -d testdb -p 54321 -- 创建测试数据库 CREATE DATABASE devdb WITH OWNER = system ENCODING = 'UTF8' LC_COLLATE = 'zh_CN.UTF-8' LC_CTYPE = 'zh_CN.UTF-8'; -- 切换到新数据库 \c devdb创建测试表king_user，如下图：

-- 创建测试表 CREATE TABLE IF NOT EXISTS king_user ( user_id BIGSERIAL PRIMARY KEY, username VARCHAR(50) NOT NULL UNIQUE, password VARCHAR(100) NOT NULL, real_name VARCHAR(50), email VARCHAR(100), phone VARCHAR(20), status SMALLINT DEFAULT 1, create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, update_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP );创建对应的索引，方便快速查询，如下所示：

-- 创建索引 CREATE INDEX idx_sys_user_username ON king_user(username); CREATE INDEX idx_sys_user_status ON king_user(status); CREATE INDEX idx_sys_user_create_time ON king_user(create_time); -- 插入测试数据 INSERT INTO king_user (username, password, real_name, email, phone) VALUES ('admin', 'e10adc3949ba59abbe56e057f20f883e', '管理员', '[email protected]', '13800138000'), ('zhangsan', 'e10adc3949ba59abbe56e057f20f883e', '张三', '[email protected]', '13900139000'), ('lisi', 'e10adc3949ba59abbe56e057f20f883e', '李四', '[email protected]', '13700137000');创建订单表和插入测试数据：

-- 创建订单表 CREATE TABLE IF NOT EXISTS biz_order ( order_id BIGSERIAL PRIMARY KEY, order_no VARCHAR(32) NOT NULL UNIQUE, user_id BIGINT NOT NULL, product_name VARCHAR(200) NOT NULL, quantity INTEGER NOT NULL DEFAULT 1, unit_price DECIMAL(10,2) NOT NULL, total_amount DECIMAL(10,2) NOT NULL, order_status SMALLINT DEFAULT 1, payment_status SMALLINT DEFAULT 0, create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, update_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP, CONSTRAINT fk_order_user FOREIGN KEY (user_id) REFERENCES king_user(user_id) ); -- 创建订单表索引 CREATE INDEX idx_biz_order_user_id ON biz_order(user_id); CREATE INDEX idx_biz_order_order_no ON biz_order(order_no); CREATE INDEX idx_biz_order_create_time ON biz_order(create_time); -- 插入测试订单数据 INSERT INTO biz_order (order_no, user_id, product_name, quantity, unit_price, total_amount) VALUES ('ORDER202312010001', 2, 'Java编程思想（第4版）', 2, 89.00, 178.00), ('ORDER202312010002', 2, 'Spring实战（第5版）', 1, 99.00, 99.00), ('ORDER202312010003', 3, 'MySQL必知必会', 3, 59.00, 177.00);二、基础JDBC连接与操作2.1 最基础的JDBC连接示例创建一个简单的Java项目，先验证能否正常连接：

package com.example.kingbase; import java.sql.*; import java.util.Properties; /** * KingbaseES基础连接测试 */ public class BasicConnectionTest { // 数据库连接信息 private static final String DB_URL = "jdbc:kingbase8://localhost:54321/devdb"; private static final String DB_USER = "system"; private static final String DB_PASSWORD = "123456"; private static final String DRIVER_CLASS = "com.kingbase8.Driver"; public static void main(String[] args) { // 测试连接 testBasicConnection(); // 测试查询 testQuery(); // 测试插入 testInsert(); // 测试事务 testTransaction(); } /** * 基础连接测试 */ public static void testBasicConnection() { Connection conn = null; try { // 1. 加载驱动 Class.forName(DRIVER_CLASS); System.out.println("驱动加载成功！"); // 2. 获取连接 conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD); System.out.println("数据库连接成功！"); // 3. 获取数据库元数据 DatabaseMetaData metaData = conn.getMetaData(); System.out.println("数据库产品名称: " + metaData.getDatabaseProductName()); System.out.println("数据库版本: " + metaData.getDatabaseProductVersion()); System.out.println("驱动版本: " + metaData.getDriverVersion()); System.out.println("用户名: " + metaData.getUserName()); } catch (ClassNotFoundException e) { System.err.println("驱动类找不到: " + e.getMessage()); } catch (SQLException e) { System.err.println("数据库连接失败: " + e.getMessage()); } finally { if (conn != null) { try { conn.close(); System.out.println("数据库连接已关闭！"); } catch (SQLException e) { e.printStackTrace(); } } } } 2.2 查询测试/** * 查询测试 */ public static void testQuery() { String sql = "SELECT user_id, username, real_name, email, create_time FROM sys_user WHERE status = ? ORDER BY create_time DESC"; try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD); PreparedStatement pstmt = conn.prepareStatement(sql)) { pstmt.setInt(1, 1); try (ResultSet rs = pstmt.executeQuery()) { System.out.println("\n=== 用户列表 ==="); System.out.printf("%-10s %-20s %-20s %-30s %-20s%n", "用户ID", "用户名", "真实姓名", "邮箱", "创建时间"); System.out.println("--------------------------------------------------------------------------------"); while (rs.next()) { System.out.printf("%-10d %-20s %-20s %-30s %-20s%n", rs.getLong("user_id"), rs.getString("username"), rs.getString("real_name"), rs.getString("email"), rs.getTimestamp("create_time")); } } } catch (SQLException e) { System.err.println("查询失败: " + e.getMessage()); } }2.3 新增测试 /** * 插入测试 */ public static void testInsert() { String sql = "INSERT INTO sys_user (username, password, real_name, email, phone) VALUES (?, ?, ?, ?, ?)"; try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD); PreparedStatement pstmt = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) { // 设置参数 pstmt.setString(1, "wangwu"); pstmt.setString(2, "e10adc3949ba59abbe56e057f20f883e"); pstmt.setString(3, "王五"); pstmt.setString(4, "[email protected]"); pstmt.setString(5, "13600136000"); // 执行插入 int affectedRows = pstmt.executeUpdate(); System.out.println("\n插入成功，影响行数: " + affectedRows); // 获取自动生成的主键 try (ResultSet generatedKeys = pstmt.getGeneratedKeys()) { if (generatedKeys.next()) { long userId = generatedKeys.getLong(1); System.out.println("新插入的用户ID: " + userId); } } } catch (SQLException e) { System.err.println("插入失败: " + e.getMessage()); } }2.4 删除测试 /** * 事务测试 */ public static void testTransaction() { String insertUserSql = "INSERT INTO sys_user (username, password, real_name) VALUES (?, ?, ?)"; String insertOrderSql = "INSERT INTO biz_order (order_no, user_id, product_name, quantity, unit_price, total_amount) VALUES (?, ?, ?, ?, ?, ?)"; Connection conn = null; try } catch (SQLException e) { e.printStackTrace(); } } /** * 批量删除 */ public static void batchDelete() { String sql = "DELETE FROM sys_user WHERE username = ?"; try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD); PreparedStatement pstmt = conn.prepareStatement(sql)) { conn.setAutoCommit(false); // 删除测试数据 String[] usernames = {"test_user_1", "test_user_2", "test_user_3"}; for (String username : usernames) { pstmt.setString(1, username); pstmt.addBatch(); } int[] results = pstmt.executeBatch(); conn.commit(); System.out.println("批量删除完成，删除条数: " + results.length); } catch (SQLException e) { e.printStackTrace(); } }2.5 大数据分配处理/** * 大数据量分批处理 */ public static void largeDataProcessing() { String selectSql = "SELECT user_id, username FROM sys_user WHERE user_id > ? ORDER BY user_id ASC LIMIT ?"; String updateSql = "UPDATE sys_user SET email = ? WHERE user_id = ?"; try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD); PreparedStatement selectStmt = conn.prepareStatement(selectSql); PreparedStatement updateStmt = conn.prepareStatement(updateSql)) { conn.setAutoCommit(false); long lastUserId = 0; int batchSize = 1000; boolean hasMoreData = true; while (hasMoreData) { // 查询一批数据 selectStmt.setLong(1, lastUserId); selectStmt.setInt(2, batchSize); List userList = new ArrayList<>(); try (ResultSet rs = selectStmt.executeQuery()) { while (rs.next()) { User user = new User(); user.userId = rs.getLong("user_id"); user.username = rs.getString("username"); userList.add(user); } } if (userList.isEmpty()) { hasMoreData = false; continue; } // 更新这批数据 for (User user : userList) { String newEmail = user.username + "@newdomain.com"; updateStmt.setString(1, newEmail); updateStmt.setLong(2, user.userId); updateStmt.addBatch(); lastUserId = user.userId; } updateStmt.executeBatch(); conn.commit(); updateStmt.clearBatch(); System.out.println("已处理至用户ID: " + lastUserId); } System.out.println("大数据量分批处理完成！"); } catch (SQLException e) { e.printStackTrace(); } }三、Spring Boot集成方案3.1 完整项目配置创建一个Spring Boot项目，完整的配置如下：

pom.xml完整配置：

4.0.0 org.springframework.boot spring-boot-starter-parent 2.7.18 com.example kingbase-demo 1.0.0 jar kingbase-demo 人大金仓数据库集成示例 11 8.6.0 3.5.3.1 1.2.20 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-validation org.springframework.boot spring-boot-starter-aop cn.com.kingbase kingbase8 ${kingbase.version} com.alibaba druid-spring-boot-starter ${druid.version} com.baomidou mybatis-plus-boot-starter ${mybatis-plus.version} org.springframework.boot spring-boot-starter-test test org.apache.commons commons-lang3 cn.hutool hutool-all 5.8.22 org.springframework.boot spring-boot-maven-plugin 3.2 application.yml配置server: port: 8080 servlet: context-path: /api spring: application: name: kingbase-demo # 数据源配置 datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.kingbase8.Driver url: jdbc:kingbase8://localhost:54321/devdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false username: system password: 123456 # Druid连接池配置 druid: initial-size: 10 min-idle: 10 max-active: 100 max-wait: 60000 time-between-eviction-runs-millis: 60000 min-evictable-idle-time-millis: 300000 validation-query: SELECT 1 test-while-idle: true test-on-borrow: false test-on-return: false pool-prepared-statements: true max-pool-prepared-statement-per-connection-size: 20 filters: stat,wall,slf4j connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 use-global-data-source-stat: true # MyBatis Plus配置 mybatis-plus: configuration: map-underscore-to-camel-case: true cache-enabled: false call-setters-on-nulls: true jdbc-type-for-null: 'null' log-impl: org.apache.ibatis.logging.stdout.StdOutImpl global-config: db-config: id-type: ASSIGN_ID logic-delete-field: deleted logic-delete-value: 1 logic-not-delete-value: 0 mapper-locations: classpath*:mapper/**/*Mapper.xml # 日志配置 logging: level: com.example.kingbase.mapper: debug org.springframework.jdbc: debug3.3 实体类与Mapper这个实体类就是我们上面刚刚创建的表

package com.example.kingbase.entity; import com.baomidou.mybatisplus.annotation.*; import com.fasterxml.jackson.annotation.JsonFormat; import lombok.Data; import java.io.Serializable; import java.time.LocalDateTime; /** * 用户实体 */ @Data @TableName("king_user") public class SysUser implements Serializable { private static final long serialVersionUID = 1L; /** * 用户ID */ @TableId(value = "user_id", type = IdType.ASSIGN_ID) private Long userId; /** * 用户名 */ @TableField("username") private String username; /** * 密码 */ @TableField("password") private String password; /** * 真实姓名 */ @TableField("real_name") private String realName; /** * 邮箱 */ @TableField("email") private String email; /** * 手机号 */ @TableField("phone") private String phone; /** * 状态 0-禁用 1-启用 */ @TableField("status") private Integer status; /** * 创建时间 */ @TableField(value = "create_time", fill = FieldFill.INSERT) @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss") private LocalDateTime createTime; /** * 更新时间 */ @TableField(value = "update_time", fill = FieldFill.INSERT_UPDATE) @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss") private LocalDateTime updateTime; /** * 逻辑删除标识 */ @TableField("deleted") @TableLogic private Integer deleted; }Mapper接口：

package com.example.kingbase.mapper; import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.example.kingbase.entity.SysUser; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Param; import java.util.List; /** * 用户Mapper */ @Mapper public interface SysUserMapper extends BaseMapper { /** * 根据用户名模糊查询 */ List selectByUsernameLike(@Param("username") String username); /** * 批量插入用户 */ int batchInsert(@Param("userList") List userList); /** * 根据状态统计用户数量 */ int countByStatus(@Param("status") Integer status); }mapper xml：

INSERT INTO sys_user (username, password, real_name, email, phone, status, create_time, update_time, deleted) VALUES (#{user.username}, #{user.password}, #{user.realName}, #{user.email}, #{user.phone}, #{user.status}, #{user.createTime}, #{user.updateTime}, 0) 3.4 服务层与控制层服务接口：

package com.example.kingbase.service; import com.baomidou.mybatisplus.extension.service.IService; import com.example.kingbase.entity.SysUser; import java.util.List; /** * 用户服务接口 */ public interface ISysUserService extends IService { /** * 批量保存用户 */ boolean batchSaveUsers(List userList); /** * 根据用户名查询用户 */ List getUsersByUsername(String username); /** * 更新用户状态 */ boolean updateUserStatus(Long userId, Integer status); }服务实现类，常规操作：

package com.example.kingbase.service.impl; import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; import com.example.kingbase.entity.SysUser; import com.example.kingbase.mapper.SysUserMapper; import com.example.kingbase.service.ISysUserService; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.time.LocalDateTime; import java.util.List; /** * 用户服务实现 */ @Slf4j @Service public class SysUserServiceImpl extends ServiceImpl implements ISysUserService { @Override @Transactional(rollbackFor = Exception.class) public boolean batchSaveUsers(List userList) { if (userList == null || userList.isEmpty()) { return false; } // 设置默认值 LocalDateTime now = LocalDateTime.now(); for (SysUser user : userList) { if (user.getStatus() == null) { user.setStatus(1); } if (user.getCreateTime() == null) { user.setCreateTime(now); } if (user.getUpdateTime() == null) { user.setUpdateTime(now); } } int insertCount = baseMapper.batchInsert(userList); log.info("批量插入用户完成，插入条数：{}", insertCount); return insertCount == userList.size(); } @Override public List getUsersByUsername(String username) { if (username == null || username.trim().isEmpty()) { return list(); } return baseMapper.selectByUsernameLike(username); } @Override @Transactional(rollbackFor = Exception.class) public boolean updateUserStatus(Long userId, Integer status) { SysUser user = getById(userId); if (user == null) { log.warn("用户不存在，userId：{}", userId); return false; } user.setStatus(status); user.setUpdateTime(LocalDateTime.now()); return updateById(user); } }控制层，就是我们平常用的controller

package com.example.kingbase.controller; import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; import com.baomidou.mybatisplus.core.metadata.IPage; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.example.kingbase.common.Result; import com.example.kingbase.entity.SysUser; import com.example.kingbase.service.ISysUserService; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import io.swagger.annotations.ApiParam; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.time.LocalDateTime; import java.util.ArrayList; import java.util.List; /** * 用户管理控制器 */ @Api(tags = "用户管理") @RestController @RequestMapping("/user") public class SysUserController { @Autowired private ISysUserService userService; /** * 分页查询用户 */ @ApiOperation("分页查询用户") @GetMapping("/page") public Result> getUserPage( @ApiParam("当前页") @RequestParam(defaultValue = "1") Integer current, @ApiParam("每页条数") @RequestParam(defaultValue = "10") Integer size, @ApiParam("用户名") @RequestParam(required = false) String username, @ApiParam("状态") @RequestParam(required = false) Integer status) { Page page = new Page<>(current, size); LambdaQueryWrapper queryWrapper = new LambdaQueryWrapper<>(); if (username != null && !username.trim().isEmpty()) { queryWrapper.like(SysUser::getUsername, username); } if (status != null) { queryWrapper.eq(SysUser::getStatus, status); } queryWrapper.orderByDesc(SysUser::getCreateTime); IPage userPage = userService.page(page, queryWrapper); return Result.success(userPage); } /** * 根据ID查询用户 */ @ApiOperation("根据ID查询用户") @GetMapping("/{id}") public Result getUserById(@PathVariable Long id) { SysUser user = userService.getById(id); if (user == null) { return Result.error("用户不存在"); } return Result.success(user); } /** * 新增用户 */ @ApiOperation("新增用户") @PostMapping public Result addUser(@RequestBody SysUser user) { if (user.getUsername() == null || user.getUsername().trim().isEmpty()) { return Result.error("用户名不能为空"); } if (user.getPassword() == null || user.getPassword().trim().isEmpty()) { return Result.error("密码不能为空"); } // 检查用户名是否已存在 LambdaQueryWrapper queryWrapper = new LambdaQueryWrapper<>(); queryWrapper.eq(SysUser::getUsername, user.getUsername()); if (userService.count(queryWrapper) > 0) { return Result.error("用户名已存在"); } // 设置默认值 if (user.getStatus() == null) { user.setStatus(1); } LocalDateTime now = LocalDateTime.now(); user.setCreateTime(now); user.setUpdateTime(now); boolean result = userService.save(user); if (result) { return Result.success("用户新增成功"); } else { return Result.error("用户新增失败"); } } /** * 批量新增用户 */ @ApiOperation("批量新增用户") @PostMapping("/batch") public Result batchAddUsers(@RequestBody List userList) { if (userList == null || userList.isEmpty()) { return Result.error("用户列表不能为空"); } // 校验数据 for (SysUser user : userList) { if (user.getUsername() == null || user.getUsername().trim().isEmpty()) { return Result.error("用户名不能为空"); } if (user.getPassword() == null || user.getPassword().trim().isEmpty()) { return Result.error("密码不能为空"); } } boolean result = userService.batchSaveUsers(userList); if (result) { return Result.success("批量新增用户成功，共" + userList.size() + "条"); } else { return Result.error("批量新增用户失败"); } } /** * 更新用户 */ @ApiOperation("更新用户") @PutMapping("/{id}") public Result updateUser(@PathVariable Long id, @RequestBody SysUser user) { SysUser existingUser = userService.getById(id); if (existingUser == null) { return Result.error("用户不存在"); } // 更新字段 if (user.getRealName() != null) { existingUser.setRealName(user.getRealName()); } if (user.getEmail() != null) { existingUser.setEmail(user.getEmail()); } if (user.getPhone() != null) { existingUser.setPhone(user.getPhone()); } existingUser.setUpdateTime(LocalDateTime.now()); boolean result = userService.updateById(existingUser); if (result) { return Result.success("用户更新成功"); } else { return Result.error("用户更新失败"); } } /** * 更新用户状态 */ @ApiOperation("更新用户状态") @PutMapping("/{id}/status/{status}") public Result updateUserStatus( @PathVariable Long id, @PathVariable Integer status) { if (status != 0 && status != 1) { return Result.error("状态值只能是0或1"); } boolean result = userService.updateUserStatus(id, status); if (result) { return Result.success("用户状态更新成功"); } else { return Result.error("用户状态更新失败"); } } /** * 删除用户 */ @ApiOperation("删除用户") @DeleteMapping("/{id}") public Result deleteUser(@PathVariable Long id) { boolean result = userService.removeById(id); if (result) { return Result.success("用户删除成功"); } else { return Result.error("用户删除失败"); } } /** * 批量删除用户 */ @ApiOperation("批量删除用户") @DeleteMapping("/batch") public Result batchDeleteUsers(@RequestBody List ids) { if (ids == null || ids.isEmpty()) { return Result.error("用户ID列表不能为空"); } boolean result = userService.removeByIds(ids); if (result) { return Result.success("批量删除用户成功"); } else { return Result.error("批量删除用户失败"); } } /** * 根据用户名查询用户 */ @ApiOperation("根据用户名查询用户") @GetMapping("/search") public Result> searchUsers(@RequestParam String username) { List userList = userService.getUsersByUsername(username); return Result.success(userList); } /** * 统计用户数量 */ @ApiOperation("统计用户数量") @GetMapping("/count") public Result countUsers(@RequestParam(required = false) Integer status) { int count; if (status == null) { count = userService.count(); } else { count = userService.count(new LambdaQueryWrapper().eq(SysUser::getStatus, status)); } return Result.success(count); } }编写完就可以用postman去测试咯

四、总结本文分享了KingbaseES V8.6数据库与SpringBoot 2.7.x框架的集成实战经验。内容包括：1. 环境准备（Ubuntu系统安装配置、驱动获取方式）；2. JDBC基础操作（连接、查询、事务处理）；3. SpringBoot项目完整配置（pom依赖、数据源配置）；4. MyBatis-Plus集成（实体类、Mapper、Service层实现）；5. RESTful接口开发示例。文章提供了详细的代码示例，涵盖从数据库安装到应用开发的完整流程，帮助开发者快速实现国产数据库适配。

编码不易，希望各位点赞支持，也支持我们国产的数据库，纸上得来终觉浅，希望各位大佬也亲自动手尝试一下，如果遇到什么问题欢迎评论区留言交流，相互学习，共同进步~正在走向自律

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