post请求传递JSON数据类型（415错误解决）

post请求传递JSON数据类型

报错：JSON text did not start with array or object and option to allow fragments not set

问题一：如何上传JSON类型的数据

解答：

NSMutableDictionary *jsonDic = [[NSMutableDictionary alloc] init];

[jsonDic setObject:self.model.treeid forKey:@"treeId"];

[jsonDic setObject:self.caseId forKey:@"caseId"];

[jsonDic setObject:self.imageArray forKey:@"pictureMD5s"];

NSError *error = nil;

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDic options:0 error:&error];

NSString *json =[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

NSString *urlStr = [NSString stringWithFormat:@"%s/case/pat/picture/create",APPURL];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:urlStr]];

request.HTTPMethod = @"POST";

request.HTTPBody = [json dataUsingEncoding:NSUTF8StringEncoding];

以上是上传部分

问题二：=Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

Error 415 Unsupported Media Type

HTTP ERROR 415

解答：

需要设置Content-Type这个字段@"application/json;charset=utf-8"（必须加utf-8）

将请求头的Content-Type  设置为@"application/json;charset=utf-8"类型，满足该接口的请求头规范

[request setValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"Content-Type"];

就是因为没加;charset=utf-8，卡住死活解决不了，难受。。。。。。。。。

不过终于解决了。

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