英文:
how to insert data in elastic search index
问题
我已创建一个名为 - test 的索引。并根据以下内容进行了映射：
{
"test" : {
"mappings" : {
"properties" : {
"name" : {
"type" : "keyword"
},
"info" : {
"type" : "nested"
},
"joining" : {
"type" : "date"
}
}
}
}
}
如何编写一个 Java 代码，逐一向上述索引添加数据，或者建议示例或教程。
提前感谢。
英文:
i have created a index named - test. and as mapping as per following
{
"test" : {
"mappings" : {
"properties" : {
"name" : {
"type" : "keyword"
},
"info" : {
"type" : "nested"
},
"joining" : {
"type" : "date"
}
}
}
}
how to write a java code that adds data one by one to above index or suggest the example or tutorials
thanks in advance
答案1
得分: 1
下面是可以轻松用来索引数据的Java代码：您可以定义一个持有索引字段的JAVA POJO，就像下面的代码中UserRegistration是一个持有索引属性的POJO，然后您可以从Web服务或触发应用程序中的其他方法调用下面的方法来触发索引。
// ElasticSearch客户端
private RestHighLevelClient esclient = ...
// Jackson POJO-to-JSON映射器
private ObjectMapper objectMapper = new ObjectMapper();
public boolean register(UserRegistration userRegistration) throws IOException {
final String userStr = objectMapper.writeValueAsString(userRegistration);
final IndexRequest indexRequest = new IndexRequest(USERS_INDEX_NAME)
.id(userRegistration.getUserId())
.source(userStr, XContentType.JSON);
IndexResponse indexResponse = esclient.index(indexRequest, RequestOptions.DEFAULT);
return true;
}
请参考JAVA HLRC索引API客户端获取更多详情和代码示例。
英文:
Below is the java code which can be easily used to index the data:, you can define a JAVA POJO which holds your index fields, like in below code UserRegistration is a POJO holding the index props and than you can call below method from webservice or other methods which triggers indexing in your application.
// ElasticSearch client
private RestHighLevelClient esclient = ...
// Jackson POJO-to-JSON mapper
private ObjectMapper objectMapper = new ObjectMapper();
public boolean register(UserRegistration userRegistration) throws IOException {
final String userStr = objectMapper.writeValueAsString(userRegistration);
final IndexRequest indexRequest = new IndexRequest(USERS_INDEX_NAME)
.id(userRegistration.getUserId())
.source(userStr, XContentType.JSON);
IndexResponse indexResponse = esclient.index(indexRequest, RequestOptions.DEFAULT);
return true;
}
Please refer JAVA HLRC index-api client for more details and code samples
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