Mybatis-plus通过其他字段批量更新或新增

根据某个或者多个非ID字段进行批量更新

示例通过名称与id两个字段更新

    @Override    public boolean updateBatchByColumn(List<TestTable> list) {        return updateBatchByQueryWrapper(list, item->new QueryWrapper<>().eq("name",item.getName()).eq("id",item.getId()));    }    @Transactional(rollbackFor = Exception.class)    public boolean updateBatchByQueryWrapper(Collection<TestTable> entityList, Function<TestTable, QueryWrapper> wrapperFunction) {        String sqlStatement = this.getSqlStatement(SqlMethod.UPDATE);        return this.executeBatch(entityList, DEFAULT_BATCH_SIZE, (sqlSession, entity) -> {            Map<String, Object> param = CollectionUtils.newHashMapWithExpectedSize(2);            param.put(Constants.ENTITY, entity);            param.put(Constants.WRAPPER, wrapperFunction.apply(entity));            sqlSession.update(sqlStatement, param);        });    }

引用mybatis-plus根据某个指定字段批量更新数据库

通过其他字段批量更新或新增

     public boolean saveOrUpdateBatchByColumn(Collection<TestTable> entityList, Function<TestTable, QueryWrapper> function ) {        return SqlHelper.saveOrUpdateBatch(this.entityClass, this.mapperClass, LogFactory.getLog(AvgRowSub.class), entityList, 1000, (sqlSession, entity) -> {            Map<String, Object> param = Maps.newHashMap();            param.put(Constants.ENTITY, entity);            param.put(Constants.WRAPPER, function.apply(entity));            return CollectionUtils.isEmpty(sqlSession.selectList(this.getSqlStatement(SqlMethod.SELECT_MAPS), param));        }, (sqlSession, entity) -> {            Map<String, Object> param = Maps.newHashMap();            param.put(Constants.ENTITY, entity);            param.put(Constants.WRAPPER, function.apply(entity));            sqlSession.update(this.getSqlStatement(SqlMethod.UPDATE), param);        });    }

来源地址：https://blog.csdn.net/qq_43383907/article/details/129225531