Question

我在执行R包elastic（elastic_0.7.8）的某些功能时遇到了问题。具体来说，我尝试使用mapping_create函数从JSON字符串创建映射。

无论我使用哪种JSON格式，我都会遇到同样的错误。例如，从documentation（第38页）执行一个示例：

library(elastic)
connect(es_host = "host_url", es_port = 9210, es_path = "/")

body <- '{
      "citation": {
      "properties": {
      "journal": { "type": "string" },
      "year": { "type": "long" }
    }
  }
}'

> mapping_create(index = "plos", type = "citation", body=body)
Error: lexical error: invalid char in json text.
                                       No handler found for uri [///pl
                     (right here) ------^

其他包函数工作正常，例如，我可以执行mapping_get('_all')并检索所有索引，或使用mapping_get(index = "createdIndex")并检索已创建的索引。有没有人有类似的问题？

编辑。

Elasticsearch版本5.2.2 R版本3.3.2

> mapping_get(index = "plos", type = "citation", config=httr::verbose())
-> GET //plos/_mapping/citation HTTP/1.1
-> User-Agent: libcurl/7.29.0 r-curl/2.2 httr/1.2.1
-> Host: server-url:9200
-> Accept-Encoding: gzip, deflate
-> Accept: application/json, text/xml, application/xml, */*
-> 
<- HTTP/1.1 400 Bad Request
<- content-type: text/plain; charset=UTF-8
<- content-encoding: gzip
<- transfer-encoding: chunked
<- 
Error: lexical error: invalid char in json text.
                                       No handler found for uri [//tpm
                     (right here) ------^

任何帮助都将不胜感激。

编辑2：

从github elastic_0.7.8.9614安装新版本后，会显示另一个错误：

> mapping_create(index = "plos", type = "citation", body=body)
Error: 404 - no such index

sessionInfo()结果：

other attached packages:
[1] data.table_1.10.0  R.utils_2.5.0      R.oo_1.21.0        R.methodsS3_1.7.1  elastic_0.7.8.9614

loaded via a namespace (and not attached):
[1] httr_1.2.1   R6_2.2.0     tools_3.3.2  curl_2.6     jsonlite_1.5

编辑3

> config=httr::verbose()
> print(config)
<request>
Options:
* debugfunction: function (type, msg) 
{
    switch(type + 1, text = if (info) prefix_message("*  ", msg), headerIn = prefix_message("<- ", msg), headerOut = prefix_message("-> ", msg), dataIn = if (data_in) prefix_message("<<  ", msg, TRUE), dataOut = if (data_out) prefix_message(">> ", msg, TRUE), sslDataIn = if (data_in && ssl) prefix_message("*< ", msg, TRUE), sslDataOut = if (data_out && ssl) prefix_message("*> ", msg, TRUE))
}
* verbose: TRUE

创建映射时R弹性包中的词法错误

0 个答案: