如何通过弹性search在expressjs中解决Not Found消息

你能告诉我如何解决expressjs这个错误信息

POST /test/_search 404 45.691 ms - 1235 Trace: Not Found 

我刚刚尝试这个代码expressjs与elasticsearch

 /* GET home page. */ router.get('/', function(req, res, next) { client.search({ index: 'test', body:{ query:{ multi_match:{ query: 'i5', fields: ['title'] } } } }).then(function (response) { var hits = response.hits.hits; console.log(response); console.log(response.hits); console.log(response.hits.hits); }, function (error) { console.trace(error.message); }) res.render('index', { title: 'Express'}); }); 

请帮助这个问题谢谢