iPhone 上的 JSON POST 请求（使用 HTTP）问题

Question

我对 asp .net mvc Web 服务的请求遇到问题。我不久前在一个线程中读到，可以找出服务器想要请求的内容类型等。编译时我没有收到错误，但当我执行实际请求时，服务器日志中什么也没有发生它只说（空）（空）。执行 GET 请求并获取列表中的所有对象是没有问题的。谁能帮我解决这个令人恼火的错误吗？这是代码：

//----------------GET request to webservice works fine----------------------------------------
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: url];
[request setHTTPMethod: @"GET"];
NSData *response = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil];
NSString *stringResponse = [[NSString alloc] initWithData: response encoding: NSUTF8StringEncoding];
//NSLog(@"stringResponse is %@", stringResponse);
//--------------------------------------------------------------------------------------------
NSString *twitterTrendsUrl=@"http://search.twitter.com/trends.json";
NSString *output=
[NSString stringWithContentsOfURL:[NSURL URLWithString:twitterTrendsUrl]];
id theObject=   [output JSONValue];
NSLog(@"TWITTER: %@",theObject);
*/
//--------------------------------------------------------------------------------------------

NSURL *url = [NSURL URLWithString:@"http://errorreport.abou.se/Errors/1.0"];



//NSString *jsonRequest = @"{\"Description\":\"Gurras Description\",\"Category\":\"Klotter\"}";
//NSString *jsonRequest = @"{\"Description\":\"Gurras Description\",\"Category\":\"Klotter\",\"Address\":\"smedjegatan\",\"StreetNumber\":\"34\",\"Feedback\":\"True\",\"FeedbackWay\":\"Telefon\"}";

NSMutableDictionary* jsonObject = [NSMutableDictionary dictionary];
//NSMutableDictionary* metadata = [NSMutableDictionary dictionary];
//[metadata setObject:@"NewLoc" forKey:@"Uri"];
//[metadata setObject:@"Location.NewLoc" forKey:@"Type"];
//[jsonObject setObject:metadata forKey:@"__metadata"];
[jsonObject setObject:@"Gurras" forKey:@"Description"];
[jsonObject setObject:@"Klotter" forKey:@"Category"];
[jsonObject setObject:@"smedjegatan" forKey:@"Address"];
[jsonObject setObject:@"34" forKey:@"StreetNumber"];
[jsonObject setObject:@"True" forKey:@"Feedback"];
[jsonObject setObject:@"Telefon" forKey:@"FeedbackWay"];
// ... complete the other values
// 
NSString* jsonRequest = [jsonObject JSONRepresentation];
// jsonString now contains your example strings.

NSLog(@"Request: %@", jsonRequest);

//NSURL *url = [NSURL URLWithString:@"https://mydomain.com/Method/"];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]];

[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"json" forHTTPHeaderField:@"Data-Type"];
[request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody: requestData];

//[NSURLConnection connectionWithRequest:[request autorelease] delegate:self];

NSData *returnData = [NSURLConnection sendSynchronousRequest: request returningResponse: nil error: nil ];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding: NSUTF8StringEncoding];

NSLog(@"returnData: %@", returnString);

我还可以添加一个如何使用 javascript 与服务通信的示例：

<script type="text/javascript">
var obj = { "Description": "det kanske funkar" };
$(document).ready(function () {
    $.ajax({
        type: "POST",
        url: "/Errors/1.0",
        dataType: "json",
        contentType: "application/json",
        processData: true,
        data: '{"Description": "STeffeent   asdasd", "Category": "Miljö", "Address": "Bogatan","StreetNumber": "14", "Feedback": "true", "FeedbackWay": "Brev"}',
        success: function (data) {
            $("#result").text(data.Description);
        }
    });
});