通过HTTP RESTful API 操作elasticsearch搜索数据

样例数据集

这是编造的JSON格式银行客户账号信息文档，文档schema如下：
{
“account_number”: 0,
“balance”: 16623,
“firstname”: “Bradshaw”,
“lastname”: “Mckenzie”,
“age”: 29,
“gender”: “F”,
“address”: “244 Columbus Place”,
“employer”: “Euron”,
“email”: “bradshawmckenzie@euron.com”,
“city”: “Hobucken”,
“state”: “CO”
}
这些数据可以通过www.json-generator.com网站生成

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加载样例数据集

下载样例数据集链接
解压数据到指定目录，然后加载到elasticsearch集群

绝对路径：
curl -XPOST 'localhost:9200/bank/account/_bulk?pretty' --data-binary "@/home/cluster/apps/elasticsearch/elasticsearch-1.7.2/test/accounts.json"

相对路径：
curl -XPOST 'localhost:9200/bank/account/_bulk?pretty' --data-binary "@test/accounts.json"

---

curl 'localhost:9200/_cat/indices?v'
结果：
health status index              pri rep docs.count docs.deleted store.size pri.store.size 
yellow open   bank                 5   1       1000            0    417.1kb        417.1kb 

上面结果，说明我们成功bulk 1000个文档到bank索引中了

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搜索数据API

有两种方式：一种方式是通过 REST 请求 URI ，发送搜索参数；另一种是通过REST 请求体，发送搜索参数。而请求体允许你包含更容易表达和可阅读的JSON格式。

• 通过 REST 请求 URI

curl 'localhost:9200/bank/_search?q=*&pretty'

结果：
{
  "took" : 63,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1000,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "bank",
      "_type" : "account",
      "_id" : "1",
      "_score" : 1.0, "_source" : {
  
  "account_number":1,"balance":39225,"firstname":"Amber","lastname":"Duke","age":32,"gender":"M","address":"880 Holmes Lane","employer":"Pyrami","email":"amberduke@pyrami.com","city":"Brogan","state":"IL"}
    }, {
      "_index" : "bank",
      "_type" : "account",
      "_id" : "6",
      "_score" : 1.0, "_source" : {
  
  "account_number":6,"balance":5686,"firstname":"Hattie","lastname":"Bond","age":36,"gender":"M","address":"671 Bristol Street","employer":"Netagy","email":"hattiebond@netagy.com","city":"Dante","state":"TN"}
    }, {
      "_index" : "bank",
      "_type" : "account",

q=*，参数告诉elasticsearch，在bank索引中匹配所有的文档
pretty，参数告诉elasticsearch，返回形式打印JSON结果

• 通过REST 请求体：

curl -XPOST 'localhost:9200/bank/_search?pretty' -d '
{
  "query": { "match_all": {} }
}'

结果：
{
  "took" : 26,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1000,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "bank",
      "_type" : "account",
      "_id" : "1",
      "_score" : 1.0, "_source" : {
  
  "account_number":1,"balance":39225,"firstname":"Amber","lastname":"Duke","age":32,"gender":