MybatisPlusConfig

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;

/**
 * 自动填充创建时间，更新时间设置
 */
@Component
public class MybatisPlusConfig implements MetaObjectHandler {

    /**
     * 插入时的填充策略
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        // 创建和修改时间自动填充当前时间
        this.strictInsertFill(metaObject, "createdTime", LocalDateTime.class, LocalDateTime.now());
        this.strictInsertFill(metaObject, "updatedTime", LocalDateTime.class, LocalDateTime.now());
    }

    /**
     * 更新时的填充策略
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        // 修改时间自动填充当前时间
        this.strictUpdateFill(metaObject, "updatedTime", LocalDateTime.class, LocalDateTime.now());
    }

    /**
     * 增加mybatis-plus插件
     *
     * @return MybatisPlusInterceptor
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        // mybatis-plus自带的分页插件
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor());
        // 乐观锁插件
        interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
        return interceptor;
    }
}