Question

我有一个java方法

 public List<Project> tagSearch(String searchCriteria){
    Query query = new Query();
    return mongoTemplate.find(query.addCriteria(Criteria.where("projectTag")
            .regex(searchCriteria,"i")), Project.class, COLLECTION_NAME);
}

这里是在projectTag字段中搜索searchCriteria值。我想在多个字段中搜索该值。例如另一个字段projectName

感谢您的协助。

Answer 1

使用orOperator

您可以在orOperator中使用尽可能多的条件。然后它会是这样的：

Query query = new Query();
Criteria criteria1 = new Criteria().where("projectTag").regex(searchCriteria, "i");
Criteria criteria2 = new Criteria().where("projectName").regex(searchCriteria, "i");
query.addCriteria(new Criteria().orOperator(c1,c2));
return mongoTemplate.find(query, Project.class, COLLECTION_NAME);

Answer 2

您可以使用以下代码

final Criteria criteria = new Criteria();
criteria.orOperator(Criteria.where("projectTag").regex(searchCriteria, "i"),
                    Criteria.where("projectName").regex(searchCriteria, "i"));
final Query query = new Query(criteria);
final List<Project> projectEntities = mongoTemplate.find(query, Project.class);

Java MongoDB在多个字段中搜索值

2 个答案: