将json数据从angularjs发送到nodejs

Question

我在从前端angularjs发送json数据到表达nodejs时遇到问题。这是我尝试过的。

frontend.html页

<form ng-submit="func()"> 
    <textarea name="inputtext" type="text" ng-model="sentence"></textarea> 
</form> 

backend.js页

$scope.func = function(){ 

$scope.jsondata = {"status":"OK","language":"english","sentences":[{"sentence":"That's a nice restaurant."},{"sentence":"Also I went to another bad restaurant."},{"sentence":"I didn't like that movie."}]} 

$http.post('/sample',$scope.jsondata).success(function(data,status){ 
     console.log("Success"); 
    }) 
} 

server.js

var express = require('express'); 
var app = express(); 
var http = require('http').Server(app); 
var io = require('socket.io')(http); 
var bodyParser = require('body-parser'); 
var path = require('path'); 
var fs = require('fs'); 

app.set('views', __dirname + '/views'); 
app.set('view engine' , 'ejs'); 

app.use(bodyParser.json()); 
var urlencodedParser = bodyParser.urlencoded({ extended: true }); 

app.use(express.static('public')); 

app.get('/',function(req,res){ 
    res.render('index',{ title: 'Sentence' }); 
}); 
app.post('/sample',urlencodedParser,function(req,res){ 
    console.log(req.body); 
}); 
http.listen(8888, function(){ 
    console.log("Server listening on 8888"); 
}); 

我我没有在节点服务器部分获得确切的JSON。这是我得到的。

输出

{ '{"status":"OK","language":"english","sentences":': { '{"sentence":"That\'s a nice restaurant."},{"sentence":"Also I went to another bad restaurant."},{"sentence":"I didn\'t like that movie."},{"sentence":"Thats a very bad movie."}': '' } } 

任何一个可以帮助我如何才能获得在该节点服务器部分精确JSON。这样我就可以解析并只将文本字段写入文件。

Answer 1

$ http POST调用，需要Object，而不是json。所以在发送给服务器之前，您需要对JSON进行字符串化。

$http.post('/sample',JSON.stringify($scope.jsondata)).success(function(data,status){ 
     console.log("Success"); 
    }) 
} 

Answer 2

您是否将该帖子创建为JSON以发送至节点？

Angular会为你做这件事，你可以在帖子中提出并反对，因为Ved建议Angular会奇迹般地将其改为JSON发送给节点服务器。

$scope.func = function(){ 

$scope.data = {language:"english", sentences: [{sentence:"That's a nice restaurant."},{sentence:"Also I went to another bad restaurant."}, {"sentence":"I didn't like that movie."}]} 

$http.post('/sample',$scope.data).success(function(data,status){ 
    console.log("Success"); 
}) 
} 

这将读取服务器上：[Object object]作为节点的bodyparser NPM模块将其改回为对象

Answer 3

尝试设置数据类型为JSON之前发送到服务器。这将设置Content-Type头的application/json该服务器可以理解为一个JSON

$http({ 
    method: 'POST', 
    url: baseUrl + '/sample', 
    dataType: "json", 
    data: { 
     "status": "OK", 
     "language": "english", 
     "sentences": [{"sentence": "That's a nice restaurant."}, 
      {"sentence": "Also I went to another bad restaurant."}, 
      {"sentence": "I didn't like that movie."}] 
    } 
}).success(function (data, status) { 

}).error(function (data, status) { 

}) 

更新： 我试图运行你的源代码并修改一点点，你可以检查它是否响应正确的格式，你想要的。结帐这个回购：在头https://github.com/nguyennb9/sample-angularjs-expressjs

Answer 4

使用应用/ JSON而POST方法

$http({ 
    method:'POST', 
    dataType: "json", 
    url: 'http://localhost:8000/saveform', 
    data : $scope.user, 
    headers: { 
     'Content-Type': 'application/json' 
    } 
    }).success(function(data){ 

    });