问题
I have seen other questions with the same error, but none of the answers seem to work.
<!DOCTYPE html>
<html>
<body>
<form action="http://127.0.0.1:8080/del" method="post">
First name: <input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
<input type="submit" value="Submit">
</form>
<p>Click on the submit button, and the input will be sent to a page on the server called "http://127.0.0.1:8080/del".</p>
</body>
</html>
server.js
var express=require('express');
var body_parser=require('body-parser');
var request = require('request').defaults({json:true});
var app=express();
var del=require('./del');
app.post('./del',del.test);
var server = app.listen(8080,function(){
var host="127.0.0.1";
var port="8080";
console.log("App is listening at http://%s:%s\n",host,port);
});
del.js
module.exports={
test: function(){
console.log("Hello world.");
}
};
Each time, when I submit the form, it shows
Cannot POST /del
回答1:
In your server.js change this line:
app.post('./del',del.test);
to this:
app.post('/del',del.test);
then you have correct router.
And your del.js change to this:
module.exports={
test: function(req, res){
console.log("Hello world.");
res.status(200).end();
}
};
because router function should return response.
来源：https://stackoverflow.com/questions/34574522/shows-error-cannot-post-when-i-try-to-submit-the-html-form