Question

我已经按照Tutorial来创建一个Nodejs和Mongo的宁静Api。除了一些问题，它工作正常。我的玩家模型是

var player = new mongoose.Schema({
name: String,
email: String,
score: String
});

当我尝试通过Chrome / Firefox上的Postman扩展程序发布数据时，我无法发布数据。回复如下

"__v":0,"_id":"54fed7cf5dde9b1c1e90ed6c"}

但是，如果我通过

终端发出请求

curl -XPOST http://localhost:3000/players -d 'name=ronaldo&email=ronaldo@com&score=232'

它工作正常。

除此之外，当尝试发布或获取Ajax请求时，即使添加了

，我仍然会收到CORS错误

app.use(function (req, res, next) {

// Website you wish to allow to connect
res.setHeader('Access-Control-Allow-Origin', 'http://localhost:8888');

// Request methods you wish to allow
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');

// Request headers you wish to allow
res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');

// Set to true if you need the website to include cookies in the requests sent
// to the API (e.g. in case you use sessions)
res.setHeader('Access-Control-Allow-Credentials', true);

// Pass to next layer of middleware
next();
});

我也试过使用cors中间件，但没有运气。服务器正在http://92.222.36.106:3000/players运行以进行临时测试。随意使用Postman发布数据。

Answer 1

set your cross origin request headers properly ,above you are accessing the request from "http://localhost:8888"(set it your domain) .it allows that domain only.Make sure your domain is properly set it or not .

It allows request from any origin 
res.setHeader('Access-Control-Allow-Origin', '*');


It allows request from only "http://localhost:8888"
res.setHeader('Access-Control-Allow-Origin', 'http://localhost:8888');

Answer 2

似乎工作正常。在Postman检查：

Content-Type设置为application/json
正文类型已设置为raw，并且已选中JSON。
以下是一些示例数据：

{ “名字”：“Mariano Rajoy”， “email”：“sobres.manila@pp.com”， “得分”：0 }

如果这不起作用，这是一个有效的例子。将其保存为.json文件并将其作为集合导入：

{"id":"d7fd0131-247a-08c0-4c89-5b46712201b8","name":"Players api","timestamp":1425989704352,"requests":[{"collectionId":"d7fd0131-247a-08c0-4c89-5b46712201b8","id":"2c301d19-62e6-6ad5-40bb-0fbec97305be","name":"http://92.222.36.106:3000/players/","description":"","url":"http://92.222.36.106:3000/players/","method":"POST","headers":"Content-Type: application/json\n","data":"{\n  \"name\": \"Mariano Rajoy\",\n  \"email\": \"sobres.manila@pp.com\",\n  \"score\": 0\n}\n","dataMode":"raw","timestamp":0,"responses":[],"version":2}]}

（在您的代码'Access-Control-Allow-Origin'设置为'http://localhost:8888'，但我假设您已将其设置为'*'，因为我正在使用您的api与Postman）

修改

尝试使用常规的ajax请求，但无效。显然，您的代码仍然"Access-Control-Allow-Origin"设置为"http://localhost:8888"而不是"*"，而Postman / Chrome应用可以绕过Cross Origin，但不知道......

Node / Express无法正确更新数据模型

2 个答案: