Mybatis-Plus 实战完整学习笔记(十一)------条件构造器删除,修改,conditon

1、修改功能--其他过滤方式跟select一样

/**
     * 修改条件构造器
     * @throws SQLException
     */
    @Test
    public void selectUpdate() throws SQLException {

        Employee employee = new Employee();
        employee.setGender(1);

        // 添加过滤条件
        Integer result = employeeMapper.update(employee,new UpdateWrapper<>());


        if (result>0) {
            logger.info("++ 更新成功+++++" + result);
        }

    }

2、删除功能

 /**
     * 删除条件
     * @throws SQLException
     */
    @Test
    public void deleted() throws SQLException {


        Employee employee = new Employee();
        employee.setId(1);

        // 删除过滤条件
        Integer result = employeeMapper.delete(new QueryWrapper<>());

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

    }

3、Condition跟QueryWrapper一样

 /**
     * Condition用法
     *
     * @throws SQLException
     */
    @Test
    public void selectCondition() throws SQLException {

        //Condition用法
        QueryWrapper condition = Condition.create().eq("age", "20");

        List employeeList = employeeMapper.selectList(condition);


        if (!employeeList.isEmpty()) {
            logger.info("++条件构造器查询员工信息+++++" + gson.toJson(employeeList));
        }

    }