你这个是5x版本的吧

[AVOlili]

你不是说了 ScriptEngine 6.x之后替换native scripts 使用 ScriptEngine 来注册和解析插件
https://blog.csdn.net/ailice001/article/details/79616423
然后通过脚本source查询
GET test/_search
{
"query": {
"function_score": {
"query": {
"match_all": {}
},
"script_score": {
"script": {
"source":"demoPlugin",
"lang": "expert_scripts",
"params": {
"fisrt": "test",
"send": "test"
}
}
}
}
},
"sort": {
"_score": {
"order": "asc"
}
}
}