elasticsearch-javaAPI查找与删除

在学习elasticsearch的时候结合kibana可视化，但是感觉现在的kibana做的还不好，好多模块还不成熟，所以为了需求就要自己开发可视化界面，对于elasticsearch的javaAPI的需求也就有了，但是官方文档上讲解的不是全面，并没有明确的指出查找和删除的使用，只是介绍了一下，这是我在网上找的javaAPIdoc，阅读自己研究出来的可行的代码实现，现在分享给大家。
1、elasticsearchUtil.java

public class ElasticsearchUtil {

//  private static final Logger LOGGER = Logger
//          .getLogger(ElasticsearchUtil.class);

    public static TransportClient getClient() {
        TransportClient client = null;
        try {
            client = TransportClient
                    .builder()
                    .build()
                    .addTransportAddress(
                            new InetSocketTransportAddress(InetAddress
                                    .getByName("192.168.20.247"), 9300));
            return client;
        } catch (Exception e) {
//          LOGGER.info("link elasticsearch failed !");

        }
        return client;
    }

    public static void close(TransportClient client) {
        if (client != null)
            client.close();
    }

}

2.searchBydate

public List searchBydate(String index,Date date){
        TransportClient client = ElasticsearchUtil.getClient();
        List hitcontents = new ArrayList();
        JSONObject obj = null;

        SearchRequestBuilder sbuilder = client.prepareSearch(index);

        SearchResponse response = sbuilder.execute().actionGet();
        SearchHits hits = response.getHits();
//      System.out.println(response.get);

        SearchHit[] h = hits.getHits();
        for (SearchHit hit : h) {
//          System.out.println(hit.getId());
            obj = JSONObject.fromObject(hit.getSourceAsString());
//          System.out.println(hit.getSourceAsString());
            Date newdate = dateutil(obj.getString("@timestamp"));

            if (newdate.before(date))
                hitcontents.add(hit.getSourceAsString());
        }
        return hitcontents;
    }

3.searchforId

public List searchforId(String index,Date date){

        TransportClient client = ElasticsearchUtil.getClient();
        List hitid = new ArrayList();
        JSONObject obj = null;

        SearchRequestBuilder sbuilder = client.prepareSearch(index);

        SearchResponse response = sbuilder.execute().actionGet();
        SearchHits hits = response.getHits();
//      System.out.println(response.get);

        SearchHit[] h = hits.getHits();
        for (SearchHit hit : h) {
//          System.out.println(hit.getId());
            obj = JSONObject.fromObject(hit.getSourceAsString());
//          System.out.println(hit.getSourceAsString());
            Date newdate = dateutil(obj.getString("@timestamp"));

            if (newdate.before(date))
//              hitcontents.add(hit.getSourceAsString());
                hitid.add(hit.getId());
        }
        return hitid;
    }

4、 dateutil

private Date dateutil(String date) {
        date = date.replace("Z", " UTC");
        SimpleDateFormat format = new SimpleDateFormat(
                "yyyy-MM-dd'T'HH:mm:ss.SSS Z");
        Date d = null;
        try {
            d = format.parse(date);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return d;

    }

5、deleteBydate

public void deleteBydate(String index , String type , String id){

        TransportClient client = ElasticsearchUtil.getClient();
        DeleteRequestBuilder drBuilder = client.prepareDelete(index, type, id);

//      DeleteRequestBuilder drBuilder = client.prepareDeleteIndexedScript(scriptLang, id)

        DeleteResponse response = drBuilder.execute().actionGet();
        if(response.isFound())
            System.out.println("");
        else
            System.out.println("");
    }

6、delete—主要的删除函数

public static void delete(int time) {
        Delete delete =  new Delete();

        List<String> hitcontents = new ArrayList<String>();
        List<String> hitid = new ArrayList<String>();
        JSONObject obj = null;

        String index = PropertiesUtil.getProperty("index");
        Date d=new Date();   
        SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd");
        Date date = new Date(d.getTime() - time * 24 * 60 * 60 * 1000);

//      hitcontents = delete.searchBydate(index, date);
        hitid = delete.searchforId(index, date);

//      Iterator it = hitcontents.iterator();
        Iterator itid = hitid.iterator();

        while(itid.hasNext()){
//          System.out.println(it.next());
//          obj = JSONObject.fromObject(it.next());
//          String _index = obj.getString(index);
//          String _id = obj.getString("_id");
//          String _type = obj.getString("type");
            System.out.println(itid.next().toString());
            delete.deleteBydate(index , "syslog" , itid.next().toString()); 
        }

    }

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这是自己实现的代码，就不细说了，有什么不懂得可以留言，大家一起讨论啊。