Mybatis-Plus 实战完整学习笔记(八)------delete测试

1、根据ID删除一个员工deleteById

  /**
      * 删除客户
      *
      * @throws SQLException
      */
     @Test
     public void deletedMethod() throws SQLException {

         // 1.根据ID删除一个员工
         Integer result = employeeMapper.deleteById(1);

         if (result != null || result > 0) {
             logger.info("++++++++++++++++删除成功+++++");
         }

     }

2、根据多个ID删除多个员工

 /**
      * 删除客户
      *
      * @throws SQLException
      */
     @Test
     public void deletedMethod() throws SQLException {

        // 2.多个ID删除
         List<Integer> idList = new  ArrayList<>();
         idList.add(21);
         idList.add(20);

         Integer result = employeeMapper.deleteBatchIds(idList);

         if (result != null || result > 0) {
             logger.info("++++++++++++++++删除成功+++++");
         }

     }

3、根据map条件删除

  /**
      * 删除客户
      *
      * @throws SQLException
      */
     @Test
     public void deletedMethod() throws SQLException {

         // 3.根据map条件删除
         Employee employee = employeeMapper.selectById(19);

         Map<String, Object> map = new HashMap<>(16);
         map.put("email", employee.getEmail());
         map.put("age", employee.getAge());

         Integer result = employeeMapper.deleteByMap(map);

         if (result != null || result > 0) {
             logger.info("++++++++++++++++删除成功+++++");
         }

     }

4、根据条件构造器删除

 /**
      * 删除客户
      *
      * @throws SQLException
      */
     @Test
     public void deletedMethod() throws SQLException {

         // 4.根据条件构造器删除
         Integer result = employeeMapper.delete(new QueryWrapper<Employee>()
                 .eq("gender", 1));

         if (result != null || result > 0) {
             logger.info("++++++++++++++++删除成功+++++");
         }