在 nodejs 中发布后重定向错误 'Can't 在发送标头后设置标头' [英] Redirect after posting in nodejs Error 'Can't set headers after they are sent'

问题描述

在nodejs中发布后重定向错误发送后无法设置标头"这是代码

Redirect after posting in nodejs Error 'Can't set headers after they are sent' Here is code

router.post('/newItem', function (req, res, next) {

  product.insertItem(req.body, req.files, function (err ,result) {
    if (err) throw err;

    res.redirect(307, '/home'); 
  });
});

这是模块insertItem函数

This is module insertItem function

module.exports.insertItem = function (doc, file, callback) {

  mongo.item.insert(data, function (err, result) {
    if (err) throw err;
    callback(err, result);
  });
})

这总是在下面抛出错误

/Users/hello/Desktop/dev/project/node_modules/mongodb/lib/utils.js:95 
    process.nextTick(function() { throw err; }); 

Error: Can't set headers after they are sent. 
    at ServerResponse.OutgoingMessage.setHeader (http.js:690:11) 
    at ServerResponse.header (/Users/hello/Desktop/dev/project/node_modules/express/lib/response.js:564:10)
    at ServerResponse.res.location (/Users/hello/Desktop/dev/project/node_modules/express/lib/response.js:678:8)
    at ServerResponse.redirect 

我该如何解决问题..?

How can I solve the problem..?

推荐答案

当我在有问题的块之后有更多代码时，我遇到了与 res.redirect 类似的问题.

I ran into a similar problem with res.redirect when I had more code after the block in question.

我在重定向后用 return false 解决了这个问题.

I solved it with return false after the redirect.

在您的情况下，它看起来像这样:

In your case it would look like this:

res.redirect(307, '/home');返回假；

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