elasticsearch 创建搜索初步

太过爱你忘了你带给我的痛 2023-10-16 22:49 34阅读 0赞

我们在上一篇文章中，已经讲解：[elasticsearch 简介和创建索引初步][elasticsearch]中，我们已经讲解如何在elasticSearch 中创建索引，我们结合上一篇文章，来简单讲解ElasticSearch 是如何搜索数据的。

**elasticsearch 搜索：**

**本项目环境：eclipse + JDK 7 + elasticsearch1.7.0**

**项目截图：**

**![Center][]**

源代码：

实体数据类\[com.elasticsearch.entry.Medicine\]与上一篇文档相同。

实体数据集合工厂\[com.elasticsearch.factory.DataFactory\]与上一篇文档相同。

JSON 工具类\[com.elasticsearch.util.JsonUtil\]与上一篇文档相同。

ElasticSearch 核心检索类\[com.elasticsearch.index.ElasticSearchHandler\]与上一篇文档相同。

package com.elasticsearch.main;
    
    import java.util.List;
    
    import org.elasticsearch.index.query.QueryBuilder;
    import org.elasticsearch.index.query.QueryBuilders;
    
    import com.elasticsearch.date.DataFactory;
    import com.elasticsearch.entity.Medicine;
    import com.elasticsearch.index.ElasticSearchHandler;
    
    public class ElasticsearchTest {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		 ElasticSearchHandler esHandler = new ElasticSearchHandler();
    	     //List<String> jsondata = DataFactory.getInitJsonData();
    	     // String indexname = "indexdemo";
    	     String indexname = "eindexdemo";
    	     // String type = "typedemo";
    	     String type = "etypedemo";
    	     //创建索引
    	     //esHandler.createIndexResponse(indexname, type, jsondata);
    	     //查询条件
    	        QueryBuilder queryBuilder = QueryBuilders.termQuery("id", 1);
    	        /*QueryBuilder queryBuilder = QueryBuilders.boolQuery()
    	          .must(QueryBuilders.termQuery("id", 1));*/
    	        List<Medicine> result = esHandler.searcher(queryBuilder, indexname, type);
    	        for(int i=0; i<result.size(); i++){
    	            Medicine medicine = result.get(i);
    	            System.out.println("(" + medicine.getId() + ")药品名称:" +medicine.getName() + "\t\t" + medicine.getFunction());
    	        }
    	}
    
    }

elasticsearch 检索结果:

![Center 1][]

[elasticsearch]: http://blog.csdn.net/zhouzhiwengang/article/details/50454179
[Center]: https://img-blog.csdn.net/20160104101105159?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20160104103453584?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center