场景

项目搭建专栏：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/column/info/37194

基础搭建：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/89407994

实现

deleteById

/***
  * 通用删除操作  通过ID删除
  */
 @Test
 public void testCommomDeleteById() {
  int result=employeeMapper.deleteById(8);
  System.out.println("*******************"+result);
 }

deleteByMap

/***
  * 通用删除操作 deleteByMap  map要写列名条件 不能是实体属性名
  */
 @Test
 public void testCommomDeleteByMap() {
  Map<String, Object> columnMap = new HashMap<String, Object>();
  columnMap.put("name", "更新测试成功");
  columnMap.put("gender", "1");
  int result=employeeMapper.deleteByMap(columnMap);
  System.out.println("*******************"+result);
  
 }

deleteBatchIds

/***
  * 通用查询操作 deleteBatchIds 通过多个ID进行删除
  */
 @Test
 public void testCommomDeleteBatchIds() {
  List<Integer> idList = new ArrayList<Integer>();
  idList.add(5);
  idList.add(6);
  int result=employeeMapper.deleteBatchIds(idList);
  System.out.println("*******************"+result);
  
 }

 

源码下载

https://download.csdn.net/download/badao_liumang_qizhi/11133892