Javascript 无法使用res发送数字。使用带有节点的express发送()
我正在尝试使用节点中的express获得“imdb评级”,我正在努力 movies.jsonJavascript 无法使用res发送数字。使用带有节点的express发送(),javascript,json,node.js,express,couchdb,Javascript,Json,Node.js,Express,Couchdb,我正在尝试使用节点中的express获得“imdb评级”,我正在努力 movies.json [{ "id": "3962210", "order": [4.361276149749756, 1988], "fields": { "year": 2015, "title": "David and Goliath", "director": "Timothy A. Chey" }, "doc": { "_id": "3962210", "_rev": "1-
[{
"id": "3962210",
"order": [4.361276149749756, 1988],
"fields": {
"year": 2015,
"title": "David and Goliath",
"director": "Timothy A. Chey"
},
"doc": {
"_id": "3962210",
"_rev": "1-ac648e016b0def40382d5d1b9ec33661",
"title": "David and Goliath",
"year": 2015,
"rating": "PG",
"runtime": "92 min",
"genre": ["Drama"],
"director": "Timothy A. Chey",
"writer": ["Timothy A. Chey"],
"cast": ["Miles Sloman", "Jerry Sokolosky", "Makenna Guyler", "Paul Hughes"],
"poster": "http://ia.media-imdb.com/images/M/MV5BMjA3OTQ4NDc4MV5BMl5BanBnXkFtZTgwNDYwMzA1MjE@._V1_SX300.jpg",
"imdb": {
"rating": 8.4,
"votes": 138,
"id": "tt3962210"
}
}
}, {
"id": "251656",
"order": [3.489020824432373, 686],
"fields": {
"year": 1999,
"title": "David Cross: The Pride Is Back",
"director": "Troy Miller"
},
"doc": {
"_id": "251656",
"_rev": "1-2d0762776874f94af8f2d76e5991b529",
"title": "David Cross: The Pride Is Back",
"year": 1999,
"rating": null,
"runtime": "55 min",
"genre": ["Comedy"],
"director": "Troy Miller",
"writer": ["David Cross"],
"cast": ["David Cross", "Molly Brenner", "Amiira Ruotola"],
"poster": "http://ia.media-imdb.com/images/M/MV5BODcwMjMxOTU4OF5BMl5BanBnXkFtZTgwODE0MTc4MTE@._V1_SX300.jpg",
"imdb": {
"rating": 7.9,
"votes": 380,
"id": "tt0251656"
}
}
}]
结果
res.send(result.rows[0].doc.imdb)代码>返回{“评级”:8.4,“投票数”:138,“id”:“tt3962210”}
但是
res.send(result.rows[0].doc.imdb.rating)代码>//不返回8.4,只返回崩溃的节点
及
res.send(result.rows[0].doc.title)代码>//返回David和Goliath
res.send(result.rows[0].doc.cast[0])代码>//返回迈尔斯·斯洛曼
我哪里出错了?根据文档:
body参数可以是缓冲区对象、字符串、对象或数组
你不能单独发送一个号码
尝试将数字转换为字符串
res.send(''+result.rows[0].doc.imdb.rating);
或者将其作为对象值发送
res.send({ result: result.rows[0].doc.imdb.rating});
这样做有效,您必须将其转换为字符串:
threeFunction().toString()
或
x1.toString()整数对于res.send()无效,因此请将其转换为字符串
res.send(value.toString())
它“崩溃”节点?有错误消息吗?如果您尝试发送任何号码会发生什么情况?比如说,result.rows[0].doc.imdb.vows
?res.send不适用于数字。尝试将评级转换为stringI-truedres.send(result.rows[0].doc.imdb.id)代码>并且返回了正确的结果,所以@AlbertoRivera是正确的,这对新手来说是个难题<代码>res.send(“”+result.rows[0].doc.imdb.rating)
工作得很好很好很好的操作问题和很好的解决方案。我应该在expressres.send():
?@Jason当然,这可以帮助其他有类似问题的人谢谢。这是有用的。我解决了我的问题。我认为他们的算法是有效的,如果值是数字,请查看我们的状态代码。