我安装了elasticsearch 5.0.1和相应的摄取附件。尝试从shell脚本索引PDF文档，如下所示

#!/bin/ksh  
var=$(base64 file_name.pdf)

var1=$(curl -XPUT 'http://localhost:9200/my_index4/my_type/my_id?pipeline=attachment&pretty' -d' { "data" : $var }')
echo $var1

I got error as 
{ "error" : { "root_cause" : [ { "type" : "exception", "reason" : 
"java.lang.IllegalArgumentException: ElasticsearchParseException[Error parsing document in field 
[data]]; nested: IllegalArgumentException[Illegal base64 character 24];",
 "header" : { "processor_type" : "attachment" } } ]...

任何人都可以帮助解决上述问题。不确定我是否传递了无效的base64字符？

请注意，当我这样通过时，它有效！

var1=$(curl -XPUT 'http://localhost:9200/my_index4/my_type/my_id?pipeline=attachment&pretty'
-d' { "data" : "e1xydGYxXGFuc2kNCkxvcmVtIGlwc3VtIGRvbG9yIHNpdCBhbWV0DQpccGFyIH0=" }')