1.查询selectOne  (3.0.3版)

 1 @Test
 2     public void selectMethod() throws SQLException {
 3 
 4      // 根据ID获取一个对象的数据
 5 
 6         Employee employee =employeeMapper.selectOne(new QueryWrapper<Employee>().eq("id","1"));
 7 
 8         if (employee!=null) {
 9             logger.info("++一个员工信息+++++"+gson.toJson(employee));
10         }
11 
12 
13              
14 
15 
16     }
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