ElasticSearch（map数据类型）Java api 增（批量）删改查（全字段、高亮）
前面写了搭建，今天写一篇关于Java api的增删改查以及全字段查询和高亮展示，官方api 地址[https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/index.html]。
一、增
首先添加相应的pom依赖、resource 文件
resource文件 log4j.properties
###Console ###
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern = %d %p[%C:%L]- %m%n获取一个TransportClient的实例去连接es类似连接数据库代码
Settings settings=Settings.builder().put("cluster.name","yourclustername").build();
TransportClient client = new PreBuiltTransportClient(settings).addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("yourhostaddress"), 9300));Map testMap = new HashMap<>();
testMap.put("title","java 编程思想");
testMap.put("id",1);
//单个Map插入
IndexResponse response = client.prepareIndex("索引","yourtype",testMap.get("id")+"").setSource(testMap).get();
System.out.println(response.getResult());
client.close();
//批量插入
List> list = new ArryList<>();
for(int i=0;i<10;i++){
testMap.put("id",i);
list.add(testMap);
}
BulkRequestBuilder bulkRequestBuilder=client.prepareBulk();
for (int i=0;i
bulkRequestBuilder.add(client.prepareIndex("索引","yourtype").setId(list.get(i).get("id")+"").setSource(list.get(i)));
}
BulkResponse bulkResponse=bulkRequestBuilder.execute().actionGet();
bulkRequestBuilder.request().requests().clear();
if (bulkResponse.hasFailures()){
System.out.print("Fail");
}
System.out.print(bulkResponse.status());
client.close(); 二、删除
//删除id为0的ES里的数据
DeleteResponse response = client.prepareDelete("索引","yourtype","0").get();
System.out.print(response.getResult());三、修改（就是添加ID是里面已有的ID覆盖以前的数据）
//修改ES里id为1的那条数据title改为Tinking in Java
testMap.put("title","Thinking in Java");
IndexResponse response = client.prepareIndex("索引","yourtype","1").setSource(testMap).get();
System.out.println(response.getResult());
client.close();四、查
QueryBuilder qb = QueryBuilders.multiMatchQuery("yourSearchString","_all");
HighlightBuilder highlightBuilder=new HighlightBuilder().field("*").requireFieldMatch(false);
highlightBuilder.preTags("");
highlightBuilder.postTags("");
String[] yourTypes={yourTypes};
if (yourTypes==""||yourTypes==null){
yourTypes=new String[0];
}
SearchResponse response=client.prepareSearch("索引").setTypes(yourTypes).setFrom(pageIndex).setSize(pageSize).setQuery(qb).highlighter(highlightBuilder).execute().actionGet();
SearchHits searchHits=response.getHits();
List索引和type是要你自己去手动填写的，这是我看了官方api写的一个列子 不足之处希望大家多多指教！
今天就写这么多了，大家可以留言互相讨论~晚安~