问题是,当输入方法时,“会话”为空。如您所见,标头和JSON对象是正确的。你能告诉我我在做什么错吗?
我的POST请求与angular:
$scope.send = function () {
var data = { "session": session };
var req = {
method: 'POST',
data: data,
headers: {'Content-Type': 'application/json'},
url: '/api/myquiz/answers/'
}
$http(req).success(
function () {
quiz();
});
}
和C#代码:
[Route("answers")]
[HttpPost]
public IActionResult AnswerPost([FromBody] string session) {
...
}
Chrome控制台:
Request URL:http://localhost:39634/api/myquiz/answers/
Request Headers
Provisional headers are shown
Accept:application/json, text/plain, */*
Content-Type:application/json
Origin:http://localhost:39634
Referer:http://localhost:39634/Team/Index
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.93 Safari/537.36
Request Payload
{session: "92dfb7e432224702a553c98c294b29cf"}
session: "92dfb7e432224702a553c98c294b29cf"
最佳答案
您正在将对象发布到WebApi:
var data = { "session": session };
这样就意味着您正在传递具有会话属性的对象。您告诉WebApi方法期望的是一个字符串:
public IActionResult AnswerPost([FromBody] string session)
不是一个对象。
我想如果您将代码更改为此:
$scope.send = function () {
//var data = { "session": session };
var req = {
method: 'POST',
data: session,
headers: {'Content-Type': 'application/json'},
url: '/api/myquiz/answers/'
}
$http(req).success(
function () {
quiz();
});
}
它应该工作。希望这可以帮助。如果将来您要向函数传递更多参数,我将创建一个C#对象以传递给控制器。像这样:
public class AnswerPost
{
public string Session {get; set;}
}
然后更新控制器方法,如下所示:
[Route("answers")]
[HttpPost]
public IActionResult AnswerPost([FromBody] AnswerPost answerpost) {
...
}
关于c# - Web API 2 POST请求返回null,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/30574427/