Java API批量操作Elasticsearch
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;
// 假设client已经初始化并连接到Elasticsearch
RestHighLevelClient client;
public void bulkIndexSampleDocuments(List<SampleDocument> documents) throws IOException {
BulkRequest request = new BulkRequest();
for (SampleDocument doc : documents) {
request.add(new IndexRequest("index_name")
.source(XContentType.JSON, "field1", doc.getField1(), "field2", doc.getField2()));
}
BulkResponse bulkResponse = client.bulk(request, RequestOptions.DEFAULT);
if (bulkResponse.hasFailures()) {
// 处理失败的请求
}
}
// 示例文档类
class SampleDocument {
private String field1;
private String field2;
public SampleDocument(String field1, String field2) {
this.field1 = field1;
this.field2 = field2;
}
public String getField1() {
return field1;
}
public String getField2() {
return field2;
}
}
这个代码示例展示了如何使用Elasticsearch Java API来批量索引文档。首先,我们创建了一个BulkRequest
对象,然后我们迭代给定的文档列表,为每个文档创建一个IndexRequest
并添加到批量请求中。最后,我们执行批量操作并检查是否有失败的请求。如果有失败的请求,我们需要实现适当的错误处理。这个例子假设client
已经初始化并连接到Elasticsearch。
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