一般方式解析代码如下
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
解析结果dict为nil，后来打印了data的类型为NSInlineData
NSInlineData怎样处理，网上搜到的方式，很多都是按照下面方法改
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer=[AFJSONResponseSerializer new];//AFHTTPResponseSerializer换成了AFJSONResponseSerializer
manager.responseSerializer.acceptableContentTypes=[NSSetsetWithObjects:@"application/json",@"text/html",@"text/javascript",@"text/json",@"text/plain",nil];
但是改后请求直接失败
失败的error信息如下
Error Domain=NSCocoaErrorDomain Code=3840 "Unable to convert data to string around character 76." UserInfo={NSDebugDescription=Unable to convert data to string around character 74.}
后来查到这个问题原因一般是response的编码问题
最终解决办法，请求依旧如下设置
AFHTTPSessionManager *manager = [AFHTTPResponseSerializer serializer]；
manager.responseSerializer=[AFHTTPResponseSerializer new];
manager.responseSerializer.acceptableContentTypes=[NSSetsetWithObjects:@"application/json",@"text/html",@"text/javascript",@"text/json",@"text/plain",nil];
解析结果用如下方法
NSStringEncoding enc = kCFStringEncodingUTF8;
NSString *strdata = [[NSString alloc]initWithData:responseData encoding:enc];
解析出了最终的结果，但是strdata中的汉字乱码，后来查看请求里header编码格式是Content-Type →application/json;charset=GBK
最终改为
NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
NSString *strdata = [[NSString alloc]initWithData:responseData encoding:enc];
完美解决问题
