objective-c - IOS 应用程序将数据发送到 REST API 服务内容类型定义错误

Question

我成功地创建了一个应用程序来将数据发送到 REST API 服务。内容类型必须是text/html。但每当我运行我的应用程序时，我都会收到 415 http 代码响应，这意味着不支持的内容类型。这是我的代码:

NSURL *url = [NSURL new];

NSData *body = nil;

NSString *contentType = @"text/html"; 

NSURL *finalURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://telesto.zapto.org:81/SMART_EdgeNode/EdgeNode/DataFeeds/3/addMeasurement"]];
NSString *yourString = @"geoX#35#geoY#65";





contentType = @"application/x-www-form-urlencoded; charset=utf-8";

body = [[NSString stringWithFormat:@"%@", yourString] dataUsingEncoding:NSUTF8StringEncoding];
NSString *putLength = [NSString stringWithFormat:@"%d",[body length]];



if (nil==finalURL) {

    finalURL = url;
}


NSMutableDictionary* headers = [[[NSMutableDictionary alloc] init] autorelease];
[headers setValue:contentType forKey:@"Content-Type"];
[headers setValue:@"mimeType" forKey:@"Accept"];
[headers setValue:@"no-cache" forKey:@"Cache-Control"];
[headers setValue:@"no-cache" forKey:@"Pragma"];
[headers setValue:@"close" forKey:@"Connection"];






NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:finalURL
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:60.0];
[request setHTTPMethod:@"PUT"];

[request setAllHTTPHeaderFields:headers];


[request setHTTPBody:body];
[request setValue:putLength forHTTPHeaderField:@"Content-Length"];

self.conn = [NSURLConnection connectionWithRequest:request delegate:self];

我猜 atm 定义 content-type 有问题。有什么帮助吗？？

提前致谢

Answer 1

好吧，我终于找到了。正是这个特定的行导致了问题，并且必须对内容类型执行某些操作:

contentType = @"application/x-www-form-urlencoded; charset=utf-8";

删除后，我能够将我的字符串正确发送到服务器。