岁月染过的梦的博客

前提先有一个map类型的参数Map params= new HashMap();params.put("name","张三");params.put("age","23");第一种情况 List<Map<String,Object>> selectList(@Param("params") HashMap params);这种也是我们最常用的一种不管参数是什么类型都可以省略，但是要写上返回值类型（根据自己的情况） <select id="sele

/** * Initializes or doubles table size. If null, allocates in * accord with initial capacity target held in field threshold. * Otherwise, because we are using power-of-two expansion, the * elements from each bin must either stay at sa