143 lines
4.6 KiB
Markdown
143 lines
4.6 KiB
Markdown
# 诊断 MyBatis-Plus 自动填充问题
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## 问题现象
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尽管 `MybastisColumnsHandler` 已经实现并配置了自动填充功能，但 `create_by` 和 `create_time` 字段仍然没有被正确填充。
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## 可能的原因及解决方案
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### 1. 检查组件扫描配置
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确保 `MybastisColumnsHandler` 类被Spring容器正确管理：
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```java
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@Component // 确保这个注解存在
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public class MybastisColumnsHandler implements MetaObjectHandler {
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// ...
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}
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```
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### 2. 检查包扫描路径
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在主应用类中确保扫描到了处理器所在的包：
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```java
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@SpringBootApplication
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@MapperScan("com.openhis.*.mapper") // 确保扫描到你的mapper
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@ComponentScan(basePackages = {"com.core", "com.openhis"}) // 确保扫描到处理器
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public class OpenHisApplication {
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public static void main(String[] args) {
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SpringApplication.run(OpenHisApplication.class, args);
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}
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}
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```
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### 3. 验证实体类配置
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确保实体类正确继承了 `HisBaseEntity` 并且字段上有正确的注解：
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```java
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@Data
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@TableName("adm_practitioner")
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public class Practitioner extends HisBaseEntity {
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// 不需要在子类中重复定义 createBy, createTime 等字段
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// 因为它们已在 HisBaseEntity 中定义并带有 @TableField(fill = FieldFill.INSERT)
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}
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```
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### 4. 检查安全上下文
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自动填充处理器依赖于安全上下文来获取当前用户。确保在执行保存操作时用户已登录：
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```java
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// 在保存之前，确保用户已登录
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LoginUser loginUser = SecurityUtils.getLoginUser();
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if (loginUser == null) {
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// 用户未登录，可能需要手动设置审计字段
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}
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```
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### 5. 手动测试自动填充
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创建一个简单的测试来验证自动填充是否正常工作：
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```java
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@SpringBootTest
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public class AutoFillTest {
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@Autowired
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private PractitionerMapper practitionerMapper;
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@Test
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public void testAutoFill() {
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Practitioner practitioner = new Practitioner();
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practitioner.setName("Test Practitioner");
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// 检查在保存前字段是否为空
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System.out.println("Before insert - createBy: " + practitioner.getCreateBy());
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System.out.println("Before insert - createTime: " + practitioner.getCreateTime());
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// 执行插入操作
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int result = practitionerMapper.insert(practitioner);
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// 检查保存后字段是否被填充
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System.out.println("After insert - createBy: " + practitioner.getCreateBy());
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System.out.println("After insert - createTime: " + practitioner.getCreateTime());
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assertThat(result).isEqualTo(1);
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assertThat(practitioner.getCreateBy()).isNotNull();
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assertThat(practitioner.getCreateTime()).isNotNull();
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}
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}
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```
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### 6. 临时解决方案
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如果自动填充仍然不工作，可以在服务层手动设置这些字段：
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```java
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@Service
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public class PractitionerServiceImpl extends ServiceImpl<PractitionerMapper, Practitioner>
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implements IPractitionerService {
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@Override
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public void savePractitioner(Practitioner practitioner) {
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// 手动设置审计字段
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if (practitioner.getCreateBy() == null || practitioner.getCreateBy().isEmpty()) {
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LoginUser loginUser = SecurityUtils.getLoginUser();
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if (loginUser != null) {
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practitioner.setCreateBy(loginUser.getUsername());
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} else {
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practitioner.setCreateBy("system"); // 默认值
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}
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}
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if (practitioner.getCreateTime() == null) {
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practitioner.setCreateTime(new Date());
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}
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// 执行保存操作
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this.save(practitioner);
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}
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}
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```
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### 7. 检查 MyBatis-Plus 版本兼容性
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确保使用的 MyBatis-Plus 版本与自动填充功能兼容。当前项目使用的是 3.5.5 版本，应该支持自动填充功能。
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### 8. 调试自动填充处理器
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在 `MybastisColumnsHandler` 中添加日志来调试是否被调用：
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```java
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@Override
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public void insertFill(MetaObject metaObject) {
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System.out.println("MybastisColumnsHandler.insertFill() called"); // 调试日志
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Date currentTime = new Date();
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this.strictInsertFill(metaObject, "createTime", Date.class, currentTime);
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this.strictInsertFill(metaObject, "create_time", Date.class, currentTime);
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String username = getCurrentUsername();
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System.out.println("Setting createBy to: " + username); // 调试日志
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this.strictInsertFill(metaObject, "createBy", String.class, username);
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this.strictInsertFill(metaObject, "create_by", String.class, username);
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// ... 其他代码
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}
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```
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通过以上步骤，应该能够诊断并解决自动填充不工作的问题。 |