elasticsearch 在指定字段里匹配搜索

$searchArr = [
            "from" => $pagingNum,
            "size" => $pageSize,
            "query" => [
                "bool" => [
                    "must" => [
                        [
                            "multi_match" => [
                                "query"  => $searchText,
                                "fields" => ["content","external.bookTitle","external.bookUploadedBy","external.bookAssignedGroups"]
                            ]
                        ]
                    ],
                    "filter" => [
                        ["term" =>  ["external.publisherId" => $publisherId]]
                    ]
                ]
            ]
            ,
            "highlight" => [
                "pre_tags" => ["<b class=\"c_color\">"],
                "post_tags" => ["</b>"],
                "fields" => [
                    "content" => (object)[],
                    "external.bookTitle" => (object)[],
                    "external.bookUploadedBy" => (object)[],
                    "external.bookAssignedGroups" => (object)[]
                ]
            ]
        ];

这：

"multi_match" => [
                                "query"  => $searchText,
                                "fields" => ["content","external.bookTitle","external.bookUploadedBy","external.bookAssignedGroups"]
                            ]

json字符串:

{
   "query":{
           "multi_match":{
               "query":"搜索的关键字",
               "fields":["name","content"]
           }
   }
}