ElasticSearch索引操作入门

from datetime import datetime
from elasticsearch import Elasticsearch
 
# 连接到Elasticsearch
es = Elasticsearch("http://localhost:9200")
 
# 创建一个新索引
new_index = {
    "mappings": {
        "properties": {
            "timestamp": {
                "type": "date",
                "format": "yyyy-MM-dd HH:mm:ss"
            }
        }
    }
}
 
response = es.indices.create(index='test-index', body=new_index)
print("索引创建结果:", response)
 
# 添加一条文档到索引
doc_id = 1
doc = {
    "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
    "message": "这是一条测试信息。"
}
 
response = es.index(index='test-index', id=doc_id, document=doc)
print("文档添加结果:", response)
 
# 获取并打印文档
response = es.get(index='test-index', id=doc_id)
print("获取的文档:", response['_source'])
 
# 更新文档
updated_doc = {
    "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
    "message": "这是一条更新后的测试信息。"
}
 
response = es.update(index='test-index', id=doc_id, document=updated_doc)
print("文档更新结果:", response)
 
# 删除索引
response = es.indices.delete(index='test-index')
print("索引删除结果:", response)

这段代码展示了如何在Python中使用Elasticsearch库来完成Elasticsearch索引的基本操作，包括创建索引、添加文档、获取文档、更新文档和删除索引。代码中使用了elasticsearch库，需要先通过pip install elasticsearch命令安装。