[英]Ajax call to ASP.NET MVC Controller Returns 404 when Json Length is too Long
我有一个简单的ajax调用,它将json字符串传递给控制器操作,并且如果json的内容部分太长,或者通常是json字符串,则服务器会返回404,如果我缩短内容,它会发出请求解决并正确完成。
我以为这可以达到Microsoft JavaScriptSeralizer的8k限制,但是我已经更新了MaxJsonLength,但是没有运气。 有人可以告诉我这是怎么回事吗?
这是我的ajax请求(注意:这是使用Knockout.js)
self.updatePost = function () {
var postToUpdate = ko.toJS(self.selectedPost);
postToUpdate.Content = $("#wmd-input").val();
console.log(postToUpdate);
$.getJSON('/blogs/posts/update', {post: ko.toJSON(postToUpdate)}, function(post) {
if (post) {
// remove the selected post and add the updated post
self.posts.remove(self.selectedPost());
var updatedPost = new Post(post);
self.posts.unshift(updatedPost);
self.selectedPost(updatedPost);
$("#ghost-list li:first").trigger('click');
// show alert
}
});
};
C#控制器动作
public JsonResult Update(string post)
{
var seralizer = new JavaScriptSerializer();
seralizer.MaxJsonLength = int.MaxValue;
seralizer.RecursionLimit = 100;
var selectedPost = seralizer.Deserialize<Post>(post);
var student = students.GetStudentByEmail(User.Identity.Name);
var blog = db.Blogs.SingleOrDefault(b => b.StudentID == student.StudentID);
var postToUpdate = blog.BlogPosts.SingleOrDefault(p => p.ID == selectedPost.ID);
if (postToUpdate != null)
{
// update the post fields
postToUpdate.Title = selectedPost.Title;
postToUpdate.Slug = BlogHelper.Slugify(selectedPost.Title);
postToUpdate.Content = selectedPost.Content;
postToUpdate.Category = selectedPost.Category;
postToUpdate.Tags = selectedPost.Tags;
postToUpdate.LastUpdated = DateTime.Now;
if (selectedPost.Published)
{
postToUpdate.DatePublished = DateTime.Now;
}
// save changes
db.SaveChanges();
var jsonResult = Json(seralizer.Serialize(selectedPost), JsonRequestBehavior.AllowGet);
jsonResult.MaxJsonLength = int.MaxValue;
return jsonResult;
}
return Json(false, JsonRequestBehavior.AllowGet);
}
您是否尝试过使用post
方法:
$.post('/blogs/posts/update', {post: ko.toJSON(postToUpdate)}, function(post) {
if (post) {
// remove the selected post and add the updated post
self.posts.remove(self.selectedPost());
var updatedPost = new Post(post);
self.posts.unshift(updatedPost);
self.selectedPost(updatedPost);
$("#ghost-list li:first").trigger('click');
// show alert
}
}, 'json');
在Web Config上尝试
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="500000000"/>
</webServices>
</scripting></system.web.extensions>
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