feat：新增系统配置模块（Entity/Mapper/DTO/Service/Controller）+ 登录配置公开接口

backend-single/sql/t_system_config.sql

@@ -0,0 +1,34 @@
+-- 系统配置表
+CREATE TABLE t_system_config (
+  id            VARCHAR(64)  PRIMARY KEY,
+  config_key    VARCHAR(100) NOT NULL UNIQUE COMMENT '配置唯一标识',
+  config_value  VARCHAR(500) NOT NULL DEFAULT '' COMMENT '配置值',
+  value_type    VARCHAR(20)  NOT NULL DEFAULT 'string' COMMENT '值类型: boolean/string/number/json',
+  config_group  VARCHAR(50)  NOT NULL DEFAULT 'system' COMMENT '配置分组: system/login/notification',
+  config_name   VARCHAR(100) NOT NULL DEFAULT '' COMMENT '显示名称',
+  description   VARCHAR(300) DEFAULT '' COMMENT '配置说明',
+  sort_order    INT          NOT NULL DEFAULT 0 COMMENT '排序号',
+  is_visible    TINYINT      NOT NULL DEFAULT 1 COMMENT '是否在管理后台可见: 0-隐藏, 1-显示',
+  create_by     VARCHAR(64)  DEFAULT NULL,
+  create_time   DATETIME     DEFAULT NULL,
+  update_by     VARCHAR(64)  DEFAULT NULL,
+  update_time   DATETIME     DEFAULT NULL,
+  is_deleted    TINYINT      NOT NULL DEFAULT 0
+) COMMENT = '系统配置表';
+
+-- 初始数据：短信登录开关（默认关闭）
+INSERT INTO t_system_config (id, config_key, config_value, value_type, config_group, config_name, description, sort_order, is_visible, create_time, update_time, is_deleted)
+VALUES (
+  REPLACE(UUID(), '-', ''),
+  'sms_login_enabled',
+  'false',
+  'boolean',
+  'login',
+  '短信登录',
+  '是否启用手机号+短信验证码登录方式',
+  1,
+  1,
+  NOW(),
+  NOW(),
+  0
+);

backend-single/src/main/java/com/emotion/config/WebMvcConfig.java

@@ -60,6 +60,7 @@ public class WebMvcConfig implements WebMvcConfigurer {
                         "/actuator/**", // Actuator endpoints
                         "/admin/**", // 排除管理员路径，由管理员拦截器处理
                         "/auth/wechat/login", // WeChat mini program login endpoint
+                        "/auth/loginConfig", // 登录方式配置接口（免登录）
                         "/error" // Spring Boot error page
                 )
                 .order(2); // 优先级2

backend-single/src/main/java/com/emotion/controller/AuthController.java

@@ -10,9 +10,11 @@ import com.emotion.dto.response.ResetPasswordResponse;
 
 import com.emotion.dto.response.AuthResponse;
 import com.emotion.dto.response.CaptchaResponse;
+import com.emotion.dto.response.LoginConfigResponse;
 import com.emotion.dto.response.SmsCodeResponse;
 import com.emotion.dto.response.UserInfoResponse;
 import com.emotion.service.AuthService;
+import com.emotion.service.SystemConfigService;
 import com.emotion.service.TokenService;
 import com.emotion.util.UserContextUtils;
 import io.swagger.v3.oas.annotations.Operation;
@@ -41,6 +43,9 @@ public class AuthController {
     @Autowired
     private TokenService tokenService;
 
+    @Autowired
+    private SystemConfigService systemConfigService;
+
     /**
      * 用户登录（简化版：手机号+验证码，不存在则自动注册）
      */
@@ -61,6 +66,16 @@ public class AuthController {
         return Result.success("登录成功", response);
     }
 
+    /**
+     * 获取登录方式配置
+     */
+    @GetMapping("/loginConfig")
+    @Operation(summary = "获取登录方式配置", description = "返回当前启用的登录方式，供小程序登录页动态渲染")
+    public Result<LoginConfigResponse> getLoginConfig() {
+        LoginConfigResponse response = systemConfigService.getLoginConfig();
+        return Result.success(response);
+    }
+
     @PostMapping(value = "/register")
     @Operation(summary = "用户注册", description = "使用手机号、密码和短信验证码进行注册")
     public Result<AuthResponse> register(@Valid @RequestBody RegisterRequest request) {

backend-single/src/main/java/com/emotion/controller/SystemConfigController.java

@@ -0,0 +1,48 @@
+package com.emotion.controller;
+
+import com.emotion.common.Result;
+import com.emotion.dto.request.SystemConfigUpdateRequest;
+import com.emotion.dto.response.SystemConfigResponse;
+import com.emotion.service.SystemConfigService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * 系统配置管理控制器（管理端）
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@RestController
+@RequestMapping("/admin/systemConfig")
+@Tag(name = "系统配置管理", description = "系统配置的查询和更新功能")
+public class SystemConfigController {
+
+    @Autowired
+    private SystemConfigService systemConfigService;
+
+    /**
+     * 获取所有可见配置列表
+     */
+    @GetMapping("/list")
+    @Operation(summary = "获取配置列表", description = "获取所有可见的系统配置列表")
+    public Result<List<SystemConfigResponse>> list() {
+        List<SystemConfigResponse> configs = systemConfigService.getVisibleConfigList();
+        return Result.success(configs);
+    }
+
+    /**
+     * 批量更新配置
+     */
+    @PutMapping("/update")
+    @Operation(summary = "批量更新配置", description = "批量更新系统配置值")
+    public Result<Void> update(@RequestBody @Validated List<SystemConfigUpdateRequest> requests) {
+        systemConfigService.batchUpdateConfigs(requests);
+        return Result.success("更新成功", null);
+    }
+}

backend-single/src/main/java/com/emotion/dto/request/SystemConfigUpdateRequest.java

@@ -0,0 +1,27 @@
+package com.emotion.dto.request;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+
+/**
+ * 系统配置更新请求
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Data
+public class SystemConfigUpdateRequest {
+
+    /**
+     * 配置唯一标识
+     */
+    @NotBlank(message = "配置标识不能为空")
+    private String configKey;
+
+    /**
+     * 配置值
+     */
+    @NotBlank(message = "配置值不能为空")
+    private String configValue;
+}

backend-single/src/main/java/com/emotion/dto/response/LoginConfigResponse.java

@@ -0,0 +1,24 @@
+package com.emotion.dto.response;
+
+import lombok.Data;
+
+/**
+ * 登录方式配置响应
+ * 返回给小程序，告知当前启用的登录方式
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Data
+public class LoginConfigResponse {
+
+    /**
+     * 是否启用微信登录
+     */
+    private Boolean wechatLoginEnabled;
+
+    /**
+     * 是否启用短信登录
+     */
+    private Boolean smsLoginEnabled;
+}

backend-single/src/main/java/com/emotion/dto/response/SystemConfigResponse.java

@@ -0,0 +1,48 @@
+package com.emotion.dto.response;
+
+import lombok.Data;
+
+/**
+ * 系统配置响应
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Data
+public class SystemConfigResponse {
+
+    /**
+     * 配置唯一标识
+     */
+    private String configKey;
+
+    /**
+     * 配置值
+     */
+    private String configValue;
+
+    /**
+     * 值类型: boolean/string/number/json
+     */
+    private String valueType;
+
+    /**
+     * 配置分组
+     */
+    private String configGroup;
+
+    /**
+     * 显示名称
+     */
+    private String configName;
+
+    /**
+     * 配置说明
+     */
+    private String description;
+
+    /**
+     * 排序号
+     */
+    private Integer sortOrder;
+}

backend-single/src/main/java/com/emotion/entity/SystemConfig.java

@@ -0,0 +1,72 @@
+package com.emotion.entity;
+
+import com.baomidou.mybatisplus.annotation.*;
+import com.emotion.common.BaseEntity;
+import lombok.experimental.SuperBuilder;
+import lombok.NoArgsConstructor;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+/**
+ * 系统配置实体
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Data
+@EqualsAndHashCode(callSuper = true)
+@SuperBuilder
+@NoArgsConstructor
+@AllArgsConstructor
+@TableName("t_system_config")
+public class SystemConfig extends BaseEntity {
+
+    /**
+     * 配置唯一标识
+     */
+    @TableField("config_key")
+    private String configKey;
+
+    /**
+     * 配置值
+     */
+    @TableField("config_value")
+    private String configValue;
+
+    /**
+     * 值类型: boolean/string/number/json
+     */
+    @TableField("value_type")
+    private String valueType;
+
+    /**
+     * 配置分组: system/login/notification
+     */
+    @TableField("config_group")
+    private String configGroup;
+
+    /**
+     * 显示名称
+     */
+    @TableField("config_name")
+    private String configName;
+
+    /**
+     * 配置说明
+     */
+    @TableField("description")
+    private String description;
+
+    /**
+     * 排序号
+     */
+    @TableField("sort_order")
+    private Integer sortOrder;
+
+    /**
+     * 是否在管理后台可见: 0-隐藏, 1-显示
+     */
+    @TableField("is_visible")
+    private Integer isVisible;
+}

backend-single/src/main/java/com/emotion/mapper/SystemConfigMapper.java

@@ -0,0 +1,15 @@
+package com.emotion.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.emotion.entity.SystemConfig;
+import org.apache.ibatis.annotations.Mapper;
+
+/**
+ * 系统配置Mapper接口
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Mapper
+public interface SystemConfigMapper extends BaseMapper<SystemConfig> {
+}

backend-single/src/main/java/com/emotion/service/SystemConfigService.java

@@ -0,0 +1,41 @@
+package com.emotion.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.emotion.dto.request.SystemConfigUpdateRequest;
+import com.emotion.dto.response.LoginConfigResponse;
+import com.emotion.dto.response.SystemConfigResponse;
+import com.emotion.entity.SystemConfig;
+
+import java.util.List;
+
+/**
+ * 系统配置服务接口
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+public interface SystemConfigService extends IService<SystemConfig> {
+
+    /**
+     * 获取所有可见配置列表
+     */
+    List<SystemConfigResponse> getVisibleConfigList();
+
+    /**
+     * 批量更新配置
+     */
+    void batchUpdateConfigs(List<SystemConfigUpdateRequest> requests);
+
+    /**
+     * 获取配置值（带 Redis 缓存）
+     *
+     * @param configKey 配置标识
+     * @return 配置值字符串，不存在返回 null
+     */
+    String getConfigValue(String configKey);
+
+    /**
+     * 获取登录方式配置
+     */
+    LoginConfigResponse getLoginConfig();
+}

backend-single/src/main/java/com/emotion/service/impl/SystemConfigServiceImpl.java

@@ -0,0 +1,108 @@
+package com.emotion.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.emotion.dto.request.SystemConfigUpdateRequest;
+import com.emotion.dto.response.LoginConfigResponse;
+import com.emotion.dto.response.SystemConfigResponse;
+import com.emotion.entity.SystemConfig;
+import com.emotion.mapper.SystemConfigMapper;
+import com.emotion.service.SystemConfigService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+/**
+ * 系统配置服务实现类
+ *
+ * @author system
+ * @date 2026-06-27
+ */
+@Slf4j
+@Service
+public class SystemConfigServiceImpl extends ServiceImpl<SystemConfigMapper, SystemConfig> implements SystemConfigService {
+
+    @Autowired
+    private RedisTemplate<String, Object> redisTemplate;
+
+    private static final String CACHE_PREFIX = "system_config:";
+    private static final long CACHE_EXPIRE_HOURS = 24;
+    private static final String SMS_LOGIN_ENABLED_KEY = "sms_login_enabled";
+
+    @Override
+    public List<SystemConfigResponse> getVisibleConfigList() {
+        LambdaQueryWrapper<SystemConfig> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(SystemConfig::getIsVisible, 1)
+               .orderByAsc(SystemConfig::getSortOrder);
+        List<SystemConfig> configs = list(wrapper);
+        return configs.stream().map(this::convertToResponse).collect(Collectors.toList());
+    }
+
+    @Override
+    public void batchUpdateConfigs(List<SystemConfigUpdateRequest> requests) {
+        for (SystemConfigUpdateRequest request : requests) {
+            LambdaUpdateWrapper<SystemConfig> updateWrapper = new LambdaUpdateWrapper<>();
+            updateWrapper.eq(SystemConfig::getConfigKey, request.getConfigKey())
+                         .set(SystemConfig::getConfigValue, request.getConfigValue());
+            update(updateWrapper);
+
+            // 清除缓存
+            redisTemplate.delete(CACHE_PREFIX + request.getConfigKey());
+            log.info("更新系统配置: key={}, value={}", request.getConfigKey(), request.getConfigValue());
+        }
+    }
+
+    @Override
+    public String getConfigValue(String configKey) {
+        // 先查 Redis 缓存
+        String cacheKey = CACHE_PREFIX + configKey;
+        String cached = (String) redisTemplate.opsForValue().get(cacheKey);
+        if (cached != null) {
+            return cached;
+        }
+
+        // 查数据库
+        LambdaQueryWrapper<SystemConfig> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(SystemConfig::getConfigKey, configKey);
+        SystemConfig config = getOne(wrapper);
+        if (config == null) {
+            return null;
+        }
+
+        // 写入缓存
+        redisTemplate.opsForValue().set(cacheKey, config.getConfigValue(), CACHE_EXPIRE_HOURS, TimeUnit.HOURS);
+        return config.getConfigValue();
+    }
+
+    @Override
+    public LoginConfigResponse getLoginConfig() {
+        LoginConfigResponse response = new LoginConfigResponse();
+        response.setWechatLoginEnabled(true);
+
+        String smsEnabled = getConfigValue(SMS_LOGIN_ENABLED_KEY);
+        response.setSmsLoginEnabled("true".equalsIgnoreCase(smsEnabled));
+
+        return response;
+    }
+
+    /**
+     * 实体转响应对象
+     */
+    private SystemConfigResponse convertToResponse(SystemConfig config) {
+        SystemConfigResponse response = new SystemConfigResponse();
+        response.setConfigKey(config.getConfigKey());
+        response.setConfigValue(config.getConfigValue());
+        response.setValueType(config.getValueType());
+        response.setConfigGroup(config.getConfigGroup());
+        response.setConfigName(config.getConfigName());
+        response.setDescription(config.getDescription());
+        response.setSortOrder(config.getSortOrder());
+        return response;
+    }
+}