问题
I am having an issue making an HTTP PUT requests in a flutter. I can print the data on the console but when I tried to parse it to the endpoint that performs a PUT request, it return a response of 404 please can anyone help me?
and this is the message: cannot access the body fields of a Request without content-type
"application/x-www-form-urlencoded" Here is the actual problem:
for (Products i in selectedProducts) {
var stockupdate = {
"oid": i.oid, // I can't get the oid here
"unitInStock": i.itemqty,
"modifiedBy": userData['UserName'].toString(),
"modifiedOn": DateTime.now().toString(),
};
// but on the console, the oid is showing.
print(
'${i.oid}, ${i.itemqty.toString()},${userData['UserName']},2020-07-06T07:19:01.492Z ploo');
await http
.put(
"http://api.ergagro.com:112/StockItem/UpdateStockItem",
headers: {
'Content-Type': 'application/json'
},
body: jsonEncode(stockupdate))
.then((value) {
print(value.statusCode);
});
}
Here is the endpoint that gets the products for me:
void GeneratekDailyStock() async {
//http: //api.ergagro.com:112/GenerateDailyStockTaking?userId=b6caf34c-a425-4710-a3ee-aa22a382882a&agentOid=57&dcOid=11
final response = await http.get(
'http://api.ergagro.com:112/GenerateDailyStockTaking?userId=${widget.userid}&agentOid=${widget.oid}&dcOid=${widget.dcOid}');
print('${response.statusCode} Generated');
if (response.statusCode == 200) {
final jsonStatus = jsonDecode(response.body);
var stock = jsonStatus['Stock'];
// You can call the id of your own stock here.
mainStockid = stock['Oid'].toString();
List<dynamic> StockItems = stock['StockItems'];
for (var i in StockItems) {
print('${i['Oid'].toString()} iodd');
setState(() {
products.add(Products(
oid: i['Oid'], //this is the Id I am looking for
count: i['ItemType'].toString(),
name: i['ItemName'],
itemqty: i['Stock'].toString(),
measuringunit: i['Unit'],
));
});
}
} else {
throw Exception();
}
}
Here's the overall view of the products and the button that submits the Put request
// Form widget initialization
Container(
margin: EdgeInsets.all(24),
child: Form(
key: _formKey,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
// form was here
Divider(),
SizedBox(height: 20),
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: DataTable(
columns: [
DataColumn(
label: Text('ID'),
),
DataColumn(
label: Text('Items'),
),
DataColumn(
label: Text('Quantities'),
),
// Lets add one more column to show a delete button
DataColumn(
label: Text('Update'),
)
],
rows: selectedProducts
.map(
(product) => DataRow(
selected:
selectedProducts.contains(product),
cells: [
DataCell(
Text(product.count),
onTap: () {
print('Selected ${product.count}');
},
),
DataCell(
Text(product.name),
onTap: () {
print('Selected ${product.name}');
},
),
DataCell(
Text(product.itemqty),
onTap: () {
print('Selected ${product.itemqty}');
},
),
DataCell(
Text('Edit'),
onTap: () {
setState(() {
_isUpdate = true;
});
},
showEditIcon: true,
),
]),
)
.toList(),
),
),
),
SizedBox(height: 20),
Container(
child: Row(
children: <Widget>[
SizedBox(width: 10),
RaisedButton(
padding: EdgeInsets.fromLTRB(15, 10, 15, 10),
color: Colors.orangeAccent,
child: Text(
"Submit and Close",
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 12),
),
onPressed: () async {
var jsonbody = {
"oid": mainStockid,
"modifiedBy": userData['UserName'],
"modifiedOn": DateTime.now().toString(),
"submitted": false.toString(),
"submittedOn": DateTime.now().toString(),
"submittedBy": userData['UserName']
};
for (Products i in selectedProducts) {
var stockupdate = {
"oid": i.oid, // I can't get the oid here
"unitInStock": i.itemqty,
"modifiedBy": userData['UserName'].toString(),
"modifiedOn": DateTime.now().toString(),
};
// but on the console, the oid is showing.
print(
'${i.oid}, ${i.itemqty.toString()},${userData['UserName']},2020-07-06T07:19:01.492Z ploo');
await http
.put(
"http://api.ergagro.com:112/StockItem/UpdateStockItem",
headers: {
'Content-Type': 'application/json'
},
body: jsonEncode(stockupdate))
.then((value) {
print(value.statusCode); //This status code shows 400
});
}
await http
.put(
'http://api.ergagro.com:112/SubmitDailyStockTaking',
headers: {
'Content-Type': 'application/json'
},
body: jsonEncode(jsonbody))
.then((value) {
print('${value.statusCode} submitted'); // but this is showing 200
});
Navigator.push(
context,
new MaterialPageRoute(
builder: (context) => AnchorsPage()));
},
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50),
),
)
],
),
),
SizedBox(height: 30),
],
),
),
),
// End of form widget Initialization
And here is the Product Model:
class Products {
var oid;
String count;
String name;
String measuringunit;
String itemqty;
Products({this.oid, this.count, this.name, this.itemqty, this.measuringunit});
来源：https://stackoverflow.com/questions/63074190/cannot-access-the-body-fields-of-a-request-without-content-type-flutter