Flutter-处理POST请求中的状态码302 [英] Flutter - Handle status code 302 in POST request
本文介绍了Flutter-处理POST请求中的状态码302的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图在Flutter中使用DIO
软件包发送post
请求.
I'm trying to send a post
request in Flutter with DIO
package.
以下是请求:
getSessionId() async {
var csrf = await getCsrftoken();
var dio = new Dio(new Options(
baseUrl: "http://xxxxxxx/accounts/login/",
connectTimeout: 5000,
receiveTimeout: 100000,
// 5s
headers: {
'Cookie': "csrftoken=" + csrf
},
contentType: ContentType.JSON,
// Transform the response data to a String encoded with UTF8.
// The default value is [ResponseType.JSON].
responseType: ResponseType.PLAIN
));
var response;
response = await dio.post("http://xxxxxxx/accounts/login/",
data: {
"username": "xxxxx",
"password": "xxxxx",
"csrfmiddlewaretoken" : csrf
},
options: new Options(
contentType: ContentType.parse("application/x-www-form-urlencoded")),
);
print("StatusCode: ");
print(response.statusCode);
print("Response cookie: "); //THESE ARE NOT PRINTED
print(response.headers);
}
请求后我得到:
E/flutter ( 4567): [ERROR:flutter/shell/common/shell.cc(181)] Dart Error: Unhandled exception:
E/flutter ( 4567): DioError [DioErrorType.RESPONSE]: Http status error [302]
E/flutter ( 4567): #0 getSessionId (file:///C:/get_order/lib/main.dart:36:14)
E/flutter ( 4567): <asynchronous suspension>
从此请求中,我只需要获取sessionid
cookie,但是该函数会因未处理的异常而停止.
From this request i only need to get the sessionid
cookie, but the function stop with unhandled exception.
推荐答案
我这样解决:
在请求中添加followRedirects: false
和validateStatus: (status) { return status < 500;}
.像这样:
Add followRedirects: false
and validateStatus: (status) { return status < 500;}
to the request. Like this:
var response = await Dio().post("http://myurl",
data: requestBody,
options: Options(
followRedirects: false,
validateStatus: (status) { return status < 500; }
),
);
这样,您可以从每个headers
和其他headers
中获取302
.
This way you can get from the 302
every headers
and other.
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