首先我发出'/ init'请求,响应为{"x":50}
,
然后我发出'/ user'请求,响应为{"x":50,"data":"jack"}
。到目前为止没问题,但如果我再次发出初始请求,它会再次发出{"x":50,"data":"jack"}
响应,这怎么可能?
var resp.success = {"x":50}
exports.init = function (req, res) {
res.json(resp.success)
};
exports.user = function (req, res) {
User.findOne({_id: "1234"}).exec(function (err, user) {
var response = resp.success;
response.data = user.name;
res.json(response);
});
};
答案 0 :(得分:2)
因为你在@init和@user方法之外的作用域中定义了var resp.success = {" x":50},所以从内部修改/读取resp.success这些方法,他们正在访问resp.success的单个共享对象实例。您可以通过在@init方法和@user:
中单独定义resp.success来解决此问题exports.init = function (req, res) {
var resp.success = {"x":50}
res.json(resp.success)
};
exports.user = function (req, res) {
var resp.success = {"x":50}
User.findOne({_id: "1234"}).exec(function (err, user) {
var response = resp.success;
response.data = user.name;
res.json(response);
});
};
如果你使用underscoreJS库,你也可以这样做:
var resp.success = {"x":50}
exports.init = function (req, res) {
var successResponseForThisRequest = _.clone(res.success);
res.json(resp.success)
};
exports.user = function (req, res) {
User.findOne({_id: "1234"}).exec(function (err, user) {
var successResponseForThisRequest = _.clone(res.success);
response.data = user.name;
res.json(response);
});
};