1. 下载elasticsearch库

npm install elasticsearch --save

2.在脚本里导入模块，如下所示

const elasticsearch = require('elasticsearch');

3.调用

function getReport(md5, callback) {    var search =    {        index: 'file-behavior-report-*',        type: 'report',        body: {            query: {                "bool": {"must": [{"match": {"md5": md5.toUpperCase()}}], "must_not": [], "should": []}            },            "from": 0,            "size": 1,            "sort": [],            "aggs": {}        }    };    getES(search, function (data) {        callback(data);    });}function getES(searchInfo, callback) {    const esClient = new elasticsearch.Client({        host: 'http://193.168.15.210:9200/',        log: 'error'    });    esClient.search(searchInfo).then(function (re) {        callback(re.hits.hits);    }, function (err) {        console.trace(err.message);    });}