elasticsearch 从Golang查询ElasticSearch
在中给定一个查询字符串,如下所示 如何从ElasticSearch获得响应。这个查询在某种意义上是有效的。 这就是我试图从ElasticSearch获取响应的方法:编码字符串并调用ElasticSearchelasticsearch 从Golang查询ElasticSearch,elasticsearch,go,client,elasticsearch,Go,Client,在中给定一个查询字符串,如下所示 如何从ElasticSearch获得响应。这个查询在某种意义上是有效的。 这就是我试图从ElasticSearch获取响应的方法:编码字符串并调用ElasticSearch package main import ( "fmt" "io/ioutil" "net/http" "net/url" ) func main() { query :
package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
)
func main() {
query := `{
"query":{
"bool": {
"should": [
{"match": {"name": "Rodri"}},
{"match": {"name": "Massadra"}}
]
}
}
}`
query = url.QueryEscape(query)
resp, err := http.Get("http://localhost:9200/employee/info/_search?q=" + query)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
panic(err)
}
fmt.Printf("\n%s", body)
}
这就是我得到的错误:
{"error":{"root_cause":[{"type":"query_parsing_exception","reason":"
Failed to parse query [{\n\t\t\"query\":{\n\t\t\t\"bool\":
{\n\t\t\t\t\"should\": [\n\t\t\t\t{\"match\": {\"name\": \"Rodri\"}},
\n\t\t\t\t{\"match\": {\"name\": \"Massadra\"}}\n\t\t\t\t]\n\t\t\t}\n\t\t}\n\t\t}]",
"index":"employee"}],"type":"search_phase_execution_exception",
"reason":"all shards failed","phase":"query","grouped":true,
"failed_shards":[{"shard":0,"index":"employee","node":"EbSLFZXfRCGoqnPcGsoNAg",
"reason":{"type":"query_parsing_exception","reason":"Failed to parse query
[{\n\t\t\"query\":{\n\t\t\t\"bool\": {\n\t\t\t\t\"should\":
[\n\t\t\t\t{\"match\": {\"name\": \"Rodri\"}},\n\t\t\t\t{\"match\":
{\"name\": \"Massadra\"}}\n\t\t\t\t]\n\t\t\t}\n\t\t}\n\t\t}]","index":"employee",
"caused_by":{"type":"parse_exception","reason":
"Cannot parse '{\n\t\t\"query\":{\n\t\t\t\"bool\": {\n\t\t\t\t\"should\": [\n\t\t\t\t{\"match\":
{\"name\": \"Rodri\"}},\n\t\t\t\t{\"match\": {\"name\": \"Massadra\"}}\n\t\t\t\t]\n\t\t\t}\n\t\t}\n\t\t}':
Encountered \" <RANGE_GOOP> \"[\\n\\t\\t\\t\\t{\\\"match\\\": \"\"
at line 1, column 41.\nWas expecting one of:\n \"]\" ...\n \"}\" ...\n
","caused_by":{"type":"parse_exception","reason":"Encountered \" <RANGE_GOOP>
\"[\\n\\t\\t\\t\\t{\\\"match\\\": \"\" at line 1, column 41.\nWas expecting one
{“error”:{“root\u cause”:[{“type”:“query\u parsing\u exception”,“reason”:”
无法分析查询[{\n\t\t\“query\”:{\n\t\t\t\“bool\”:
{\n\t\t\t\t\'should\':[\n\t\t\t\t{\'match\':{\'name\':\'Rodri\'},
\n\t\t\t\t{“匹配\”:{“名称\”:“Massadra\”}\n\t\t\t\t]\n\t\t\t}\n\t\t}\n\t}\n\t\t}],
“索引”:“员工”}],“类型”:“搜索\阶段\执行\异常”,
“原因”:“所有碎片失败”,“阶段”:“查询”,“分组”:真,
“失败的_碎片”:[{“碎片”:0,“索引”:“员工”,“节点”:“EbSLFZXfRCGoqnPcGsoNAg”,
“原因”:{“类型”:“查询\解析\异常”,“原因”:“未能解析查询”
[{\n\t\t\'query\':{\n\t\t\t\'bool\':{\n\t\t\t\t\'should\':
[\n\t\t\t\t{“匹配\”:{“名称\”:“Rodri\”}}\n\t\t\t{“匹配\”:
{\'name\':\'Massadra\'}\n\t\t\t\t]\n\t\t\t}\n\t\t}\n\t\t}],“索引”:“员工”,
“原因”:{“类型”:“解析异常”,“原因”:
“无法分析“{\n\t\t\”查询\“:{\n\t\t\t\”布尔\“:{\n\t\t\t\”应\“:[\n\t\t\t{”匹配\”:
{\'name\':\'Rodri\'}\n\t\t\t{\'match\':{\'name\':\'Massadra\'}\n\t\t\t\t\t]\n\t\t\t}\n\t\t}
遇到\“\”[\\n\\t\\t\\t\\t{\\\“匹配\\”:\“\”
在第1行第41列。\n应为:\n\“]\”..\n\“}\”..\n
“,”原因“:{”类型“:”解析异常“,”原因“:”遇到\”
\“[\\n\\t\\t\\t{\\\\”匹配\\\\”:\“\”在第1行第41列。\n应为一个
我也尝试过这个方法,但我没有找到一种从字符串查询中使用它的方法
谢谢一般来说,在发送有效负载时,应该使用POST而不是GET(即使ES在GET请求中接受有效负载) 请尝试以下代码:
package main
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
url := "http://localhost:9200/employee/info/_search"
query := []byte(`{
"query":{
"bool": {
"should": [
{"match": {"name": "Rodri"}},
{"match": {"name": "Massadra"}}
]
}
}
}`)
req, err := http.NewRequest("POST", url, bytes.NewBuffer(query))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
panic(err)
}
fmt.Printf("\n%s", string(body))
}
一般来说,在发送有效负载时,应该使用POST而不是GET(即使ES在GET请求中接受有效负载) 请尝试以下代码:
package main
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
)
func main() {
url := "http://localhost:9200/employee/info/_search"
query := []byte(`{
"query":{
"bool": {
"should": [
{"match": {"name": "Rodri"}},
{"match": {"name": "Massadra"}}
]
}
}
}`)
req, err := http.NewRequest("POST", url, bytes.NewBuffer(query))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
panic(err)
}
fmt.Printf("\n%s", string(body))
}
有没有办法使主体漂亮打印?我添加了&pretty as…}&pretty`)进行查询,但它不会改变。是的,您可以使用类似这样的方法:有没有办法使主体漂亮打印?我添加了&pretty as…}&pretty`)进行查询,但它不会改变。是的,您可以使用这样的方法: