原文连接 :https://blog.csdn.net/qq_28226741/article/details/108636173?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~aggregatepage~first_rank_v2~rank_aggregation-1-108636173.pc_agg_rank_aggregation&utm_term=example%E6%A8%A1%E7%B3%8A%E6%9F%A5%E8%AF%A2&spm=1000.2123.3001.4430
在对MongoDB进行模糊查询时,使用JPA框架的Example匹配查询,出现模糊查询没有生效,只有精确查询生效的现象。
下边是官网的写法:
ExampleMatcher matcher = ExampleMatcher.matching()
.withMatcher("firstname", match -> match.endsWith())
.withMatcher("firstname", match -> match.startsWith());
下面是我自己的写法:
ExampleMatcher exampleMatcher = ExampleMatcher.matching();
exampleMatcher.withMatcher("pageAliase",ExampleMatcher.GenericPropertyMatcher::contains);
导致不生效的原因是,因为matcher.withMatcher会返回一个新的matcher,不是开始实例化的了(第一行生成的matcher并没有增加字段的模糊匹配),所以换成以下:
ExampleMatcher exampleMatcher = ExampleMatcher.matching();
exampleMatcher = exampleMatcher.withMatcher("pageAliase",ExampleMatcher.GenericPropertyMatcher::contains);