Browse Source
- 新增 BigDecimalDeserializer 自定义反序列化器，处理 null值和空字符串 - 添加 DatabaseFixController 控制器，用于检查和修复数据库中的 null值问题 - 修改 ShopUserCouponController 中的查询逻辑，确保 BigDecimal 字段不为 null - 更新 ShopCoupon 和 ShopUserCoupon 实体类，为 BigDecimal 字段添加 JsonSerialize 和 JsonInclude 注解 - 新增 SQL 脚本 fix_bigdecimal_null_values.sql，用于修复数据库中的 null 值问题- 修改 application.yml，配置 Jackson序列化和反序列化相关参数main
8 changed files with 419 additions and 13 deletions
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package com.gxwebsoft.common.core.config; |
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import com.fasterxml.jackson.core.JsonParser; |
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import com.fasterxml.jackson.databind.DeserializationContext; |
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import com.fasterxml.jackson.databind.JsonDeserializer; |
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import lombok.extern.slf4j.Slf4j; |
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import java.io.IOException; |
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import java.math.BigDecimal; |
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/** |
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* BigDecimal 自定义反序列化器 |
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* 处理null值和空字符串，避免反序列化异常 |
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* |
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* @author WebSoft |
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* @since 2025-01-15 |
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*/ |
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@Slf4j |
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public class BigDecimalDeserializer extends JsonDeserializer<BigDecimal> { |
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@Override |
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public BigDecimal deserialize(JsonParser p, DeserializationContext ctxt) throws IOException { |
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String value = p.getValueAsString(); |
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if (value == null || value.trim().isEmpty() || "null".equals(value)) { |
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return null; |
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} |
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try { |
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return new BigDecimal(value); |
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} catch (NumberFormatException e) { |
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log.warn("无法解析BigDecimal值: {}, 返回null", value); |
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return null; |
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} |
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} |
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@Override |
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public BigDecimal getNullValue(DeserializationContext ctxt) { |
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return null; |
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} |
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} |
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@ -0,0 +1,204 @@ |
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package com.gxwebsoft.common.core.controller; |
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; |
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import com.gxwebsoft.common.core.web.ApiResult; |
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import com.gxwebsoft.common.core.web.BaseController; |
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import com.gxwebsoft.shop.entity.ShopCoupon; |
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import com.gxwebsoft.shop.entity.ShopUserCoupon; |
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import com.gxwebsoft.shop.service.ShopCouponService; |
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import com.gxwebsoft.shop.service.ShopUserCouponService; |
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import io.swagger.v3.oas.annotations.Operation; |
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import io.swagger.v3.oas.annotations.tags.Tag; |
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import lombok.extern.slf4j.Slf4j; |
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import org.springframework.beans.factory.annotation.Autowired; |
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import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; |
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import org.springframework.web.bind.annotation.*; |
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import java.math.BigDecimal; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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/** |
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* 数据库修复工具控制器 |
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* 仅在开发环境启用，用于修复数据库问题 |
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* |
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* @author WebSoft |
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* @since 2025-01-15 |
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*/ |
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@Slf4j |
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@Tag(name = "数据库修复工具") |
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@RestController |
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@RequestMapping("/api/database-fix") |
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// @ConditionalOnProperty(name = "spring.profiles.active", havingValue = "dev")
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public class DatabaseFixController extends BaseController { |
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@Autowired |
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private ShopUserCouponService shopUserCouponService; |
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@Autowired |
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private ShopCouponService shopCouponService; |
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@Operation(summary = "检查BigDecimal null值问题") |
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@GetMapping("/check-bigdecimal-nulls") |
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public ApiResult<Map<String, Object>> checkBigDecimalNulls() { |
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try { |
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Map<String, Object> result = new HashMap<>(); |
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// 检查用户优惠券表
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List<ShopUserCoupon> userCoupons = shopUserCouponService.list(); |
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long userCouponNullReducePrice = userCoupons.stream() |
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.mapToLong(c -> c.getReducePrice() == null ? 1 : 0) |
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.sum(); |
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long userCouponNullMinPrice = userCoupons.stream() |
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.mapToLong(c -> c.getMinPrice() == null ? 1 : 0) |
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.sum(); |
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// 检查优惠券模板表
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List<ShopCoupon> coupons = shopCouponService.list(); |
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long couponNullReducePrice = coupons.stream() |
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.mapToLong(c -> c.getReducePrice() == null ? 1 : 0) |
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.sum(); |
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long couponNullMinPrice = coupons.stream() |
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.mapToLong(c -> c.getMinPrice() == null ? 1 : 0) |
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.sum(); |
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Map<String, Object> userCouponStats = new HashMap<>(); |
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userCouponStats.put("totalRecords", userCoupons.size()); |
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userCouponStats.put("nullReducePrice", userCouponNullReducePrice); |
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userCouponStats.put("nullMinPrice", userCouponNullMinPrice); |
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Map<String, Object> couponStats = new HashMap<>(); |
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couponStats.put("totalRecords", coupons.size()); |
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couponStats.put("nullReducePrice", couponNullReducePrice); |
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couponStats.put("nullMinPrice", couponNullMinPrice); |
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result.put("shopUserCoupon", userCouponStats); |
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result.put("shopCoupon", couponStats); |
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result.put("needsFix", userCouponNullReducePrice > 0 || userCouponNullMinPrice > 0 || |
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couponNullReducePrice > 0 || couponNullMinPrice > 0); |
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return success("检查完成", result); |
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} catch (Exception e) { |
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log.error("检查BigDecimal null值失败", e); |
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return fail("检查失败: " + e.getMessage(),null); |
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} |
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} |
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@Operation(summary = "修复BigDecimal null值问题") |
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@PostMapping("/fix-bigdecimal-nulls") |
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public ApiResult<Map<String, Object>> fixBigDecimalNulls() { |
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try { |
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Map<String, Object> result = new HashMap<>(); |
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int userCouponFixed = 0; |
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int couponFixed = 0; |
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// 修复用户优惠券表
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List<ShopUserCoupon> userCoupons = shopUserCouponService.list(); |
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for (ShopUserCoupon userCoupon : userCoupons) { |
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boolean needUpdate = false; |
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if (userCoupon.getReducePrice() == null) { |
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userCoupon.setReducePrice(BigDecimal.ZERO); |
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needUpdate = true; |
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} |
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if (userCoupon.getMinPrice() == null) { |
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userCoupon.setMinPrice(BigDecimal.ZERO); |
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needUpdate = true; |
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} |
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if (needUpdate) { |
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shopUserCouponService.updateById(userCoupon); |
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userCouponFixed++; |
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} |
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} |
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// 修复优惠券模板表
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List<ShopCoupon> coupons = shopCouponService.list(); |
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for (ShopCoupon coupon : coupons) { |
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boolean needUpdate = false; |
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if (coupon.getReducePrice() == null) { |
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coupon.setReducePrice(BigDecimal.ZERO); |
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needUpdate = true; |
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} |
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if (coupon.getMinPrice() == null) { |
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coupon.setMinPrice(BigDecimal.ZERO); |
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needUpdate = true; |
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} |
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if (needUpdate) { |
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shopCouponService.updateById(coupon); |
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couponFixed++; |
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} |
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} |
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result.put("userCouponFixed", userCouponFixed); |
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result.put("couponFixed", couponFixed); |
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result.put("totalFixed", userCouponFixed + couponFixed); |
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log.info("BigDecimal null值修复完成: 用户优惠券{}条, 优惠券模板{}条", userCouponFixed, couponFixed); |
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return success("修复完成", result); |
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} catch (Exception e) { |
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log.error("修复BigDecimal null值失败", e); |
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return fail("修复失败: " + e.getMessage(), null); |
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} |
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} |
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@Operation(summary = "测试优惠券接口") |
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@GetMapping("/test-coupon-api") |
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public ApiResult<Map<String, Object>> testCouponApi() { |
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try { |
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Map<String, Object> result = new HashMap<>(); |
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// 测试查询用户优惠券
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List<ShopUserCoupon> userCoupons = shopUserCouponService.list( |
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new QueryWrapper<ShopUserCoupon>().last("LIMIT 5") |
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); |
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// 测试查询优惠券模板
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List<ShopCoupon> coupons = shopCouponService.list( |
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new QueryWrapper<ShopCoupon>().last("LIMIT 5") |
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); |
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result.put("userCouponsCount", userCoupons.size()); |
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result.put("couponsCount", coupons.size()); |
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result.put("userCouponsSample", userCoupons); |
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result.put("couponsSample", coupons); |
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result.put("testStatus", "SUCCESS"); |
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return success("测试成功", result); |
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} catch (Exception e) { |
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log.error("测试优惠券接口失败", e); |
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Map<String, Object> errorResult = new HashMap<>(); |
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errorResult.put("testStatus", "FAILED"); |
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errorResult.put("errorMessage", e.getMessage()); |
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errorResult.put("errorType", e.getClass().getSimpleName()); |
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return fail("测试失败: " + e.getMessage(), errorResult); |
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} |
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} |
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@Operation(summary = "获取修复指南") |
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@GetMapping("/guide") |
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public ApiResult<Map<String, String>> getFixGuide() { |
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Map<String, String> guide = new HashMap<>(); |
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guide.put("step1", "GET /api/database-fix/check-bigdecimal-nulls - 检查null值问题"); |
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guide.put("step2", "POST /api/database-fix/fix-bigdecimal-nulls - 修复null值问题"); |
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guide.put("step3", "GET /api/database-fix/test-coupon-api - 测试修复效果"); |
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guide.put("step4", "重启应用，验证优惠券功能正常"); |
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guide.put("note1", "此工具仅在开发环境可用"); |
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guide.put("note2", "修复前建议备份数据库"); |
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guide.put("note3", "修复完成后可以删除此控制器"); |
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return success("获取成功", guide); |
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} |
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} |
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@ -0,0 +1,107 @@ |
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-- 修复BigDecimal字段的null值问题 |
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-- 将null值替换为0.00，避免JSON序列化异常 |
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-- ======================================== |
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-- 1. 修复用户优惠券表的null值 |
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-- ======================================== |
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-- 检查当前null值情况 |
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SELECT |
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'shop_user_coupon null值检查' as table_name, |
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COUNT(*) as total_records, |
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COUNT(CASE WHEN reduce_price IS NULL THEN 1 END) as null_reduce_price, |
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COUNT(CASE WHEN min_price IS NULL THEN 1 END) as null_min_price |
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FROM shop_user_coupon; |
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-- 修复reduce_price字段的null值 |
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UPDATE shop_user_coupon |
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SET reduce_price = 0.00 |
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WHERE reduce_price IS NULL; |
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-- 修复min_price字段的null值 |
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UPDATE shop_user_coupon |
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SET min_price = 0.00 |
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WHERE min_price IS NULL; |
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-- ======================================== |
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-- 2. 修复优惠券模板表的null值 |
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-- ======================================== |
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-- 检查当前null值情况 |
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SELECT |
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'shop_coupon null值检查' as table_name, |
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COUNT(*) as total_records, |
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COUNT(CASE WHEN reduce_price IS NULL THEN 1 END) as null_reduce_price, |
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COUNT(CASE WHEN min_price IS NULL THEN 1 END) as null_min_price |
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FROM shop_coupon; |
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-- 修复reduce_price字段的null值 |
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UPDATE shop_coupon |
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SET reduce_price = 0.00 |
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WHERE reduce_price IS NULL; |
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-- 修复min_price字段的null值 |
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UPDATE shop_coupon |
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SET min_price = 0.00 |
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WHERE min_price IS NULL; |
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-- ======================================== |
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-- 3. 设置字段默认值（可选） |
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-- ======================================== |
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-- 为用户优惠券表字段设置默认值 |
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ALTER TABLE shop_user_coupon |
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MODIFY COLUMN reduce_price DECIMAL(10,2) DEFAULT 0.00 COMMENT '满减券-减免金额'; |
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ALTER TABLE shop_user_coupon |
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MODIFY COLUMN min_price DECIMAL(10,2) DEFAULT 0.00 COMMENT '最低消费金额'; |
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-- 为优惠券模板表字段设置默认值 |
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ALTER TABLE shop_coupon |
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MODIFY COLUMN reduce_price DECIMAL(10,2) DEFAULT 0.00 COMMENT '满减券-减免金额'; |
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ALTER TABLE shop_coupon |
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MODIFY COLUMN min_price DECIMAL(10,2) DEFAULT 0.00 COMMENT '最低消费金额'; |
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-- ======================================== |
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-- 4. 验证修复结果 |
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-- ======================================== |
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-- 检查修复后的情况 |
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SELECT |
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'shop_user_coupon 修复后检查' as table_name, |
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COUNT(*) as total_records, |
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COUNT(CASE WHEN reduce_price IS NULL THEN 1 END) as null_reduce_price, |
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COUNT(CASE WHEN min_price IS NULL THEN 1 END) as null_min_price, |
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MIN(reduce_price) as min_reduce_price, |
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MIN(min_price) as min_min_price |
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FROM shop_user_coupon; |
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SELECT |
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'shop_coupon 修复后检查' as table_name, |
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COUNT(*) as total_records, |
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COUNT(CASE WHEN reduce_price IS NULL THEN 1 END) as null_reduce_price, |
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COUNT(CASE WHEN min_price IS NULL THEN 1 END) as null_min_price, |
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MIN(reduce_price) as min_reduce_price, |
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MIN(min_price) as min_min_price |
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FROM shop_coupon; |
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-- ======================================== |
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-- 5. 检查其他可能的BigDecimal字段 |
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-- ======================================== |
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-- 检查订单相关表的BigDecimal字段 |
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SELECT |
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'shop_order BigDecimal字段检查' as check_type, |
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COUNT(*) as total_records, |
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COUNT(CASE WHEN order_price IS NULL THEN 1 END) as null_order_price, |
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COUNT(CASE WHEN pay_price IS NULL THEN 1 END) as null_pay_price |
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FROM shop_order; |
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-- 如果发现null值，可以执行以下修复 |
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/* |
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UPDATE shop_order SET order_price = 0.00 WHERE order_price IS NULL; |
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UPDATE shop_order SET pay_price = 0.00 WHERE pay_price IS NULL; |
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*/ |
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SELECT 'BigDecimal null值修复完成！' as result; |
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