java - jdbcTemplate classCastException 在 Mockito.when thenReturn 期​​间

Question

我的问题是我在使用 Mockito 进行单元测试时遇到了 classCastException。(我是 Mockito 的新手)

    Mockito.when(jdbcTemplate.query(eq("select * from V_MONITORING"),
                                 eq(namedParameters),
                                 eq(new BeanPropertyRowMapper<> 
 (V_MONITORING_Record.class)))).thenReturn((List <V_MONITORING_Record> ) rec);

Without cast it doesn't compile, but with cast I got the exception :

java.lang.ClassCastException: ...V_MONITORING_Record cannot be cast to class java.util.List (...V_MONITORING_Record is in unnamed module of loader 'app'; java.util.List is in module java.base of loader 'bootstrap')

感谢任何帮助。

Answer 1

我认为yopu应该使用Arrays.asList(rec)方法，这样你就可以作为V_MONITORING_Record.class的列表返回。

Mockito.when(jdbcTemplate.query(eq("select * from V_MONITORING"),
                                 eq(namedParameters),
                                 eq(new BeanPropertyRowMapper<> 
 (V_MONITORING_Record.class)))).thenReturn(Arrays.asList(rec));