ElasticSearch5.x Java API中的and、or和not，

ElasticSearch5.x Java API中的and、or和not，

ElasticSearch Java API 官网：https://www.elastic.co/guide/en/elasticsearch/reference/5.2/getting-started.html

ElasticSearch 过滤条件，类似于SQL中的and、or、not

demo如下：

                //搜索内容设置>>>>>>>>>>>>>>>>>>>>>>
		//索引"student_manage"是索引"student"、"class"、"course_info"共同的别名
		SearchRequestBuilder searchRequestBuilder = client.prepareSearch("student_manage");
		//searchRequestBuilder.setTypes(type);
		searchRequestBuilder.setSearchType(SearchType.DFS_QUERY_THEN_FETCH);
		......
		
		//开始过滤>>>>>>>>>>>>>>>>>>>>>>
	    //************过滤条件中,must相当于and,should相当于or,must_not相当于not*****************//
		//过滤条件1
		org.elasticsearch.index.query.QueryBuilder postFilter1= QueryBuilders
				.boolQuery()
				.must(QueryBuilders.termsQuery("_index", "student"))
				.must(QueryBuilders.termsQuery("sex", "male"))
				.must(QueryBuilders.termsQuery("age", "16","17"));
		//过滤条件2
		org.elasticsearch.index.query.QueryBuilder postFilter2= QueryBuilders
				.boolQuery()
				.must(QueryBuilders.termsQuery("_index", "class"))
				.must(QueryBuilders.termsQuery("type", "math"))
				.must(QueryBuilders.boolQuery().should(QueryBuilders.termsQuery("num", "6","8")));
		//过滤条件3
		org.elasticsearch.index.query.QueryBuilder postFilter3= QueryBuilders
				.boolQuery()
				.must(QueryBuilders.termsQuery("_index", "course_info"))
				.must(QueryBuilders.termsQuery("isopen", "1"))
				.must(QueryBuilders.termsQuery("status", "2"))
				.must(QueryBuilders.termsQuery("grade", "2"));
		//整合三者过滤条件（OR）
		org.elasticsearch.index.query.QueryBuilder postFilterBool =QueryBuilders.boolQuery()
				.should(postFilter1)
				.should(postFilter2)
				.should(postFilter3);
		searchRequestBuilder.setPostFilter(postFilterBool);
		//执行搜索>>>>>>>>>>>>>>>>>>>>>>
		SearchResponse res = searchRequestBuilder.execute().actionGet();