我正在尝试同步数据，并且在同步数据后，我从服务器收到一条消息。现在，我想显示此消息。但是解析时出现错误。下面是我的代码。
- (void)connection:(NSURLConnection *)connection didReceiveData:data{
NSLog(@"ConnectionDidReceiveData");
NSString *strdata=[[NSString alloc]initWithData:data encoding:NSASCIIStringEncoding];
NSLog(@"Data as received =%@",strdata);
if(strdata.length>2)
{
SBJSON *jsonparser=[[[SBJSON alloc]init]autorelease];
NSDictionary *res= [jsonparser objectWithString:strdata];
NSLog(@"res = %@",res);
NSArray *syncMessage = [res objectForKey:@"synchData"];
NSLog(@"syncMessage = %@",syncMessage);
// NSDictionary *dict = [syncMessage objectAtIndex:2];
// NSLog(@"message = %@",[dict objectForKey:@"message"]);
for (NSDictionary *result in syncMessage) {
NSLog(@"result = %@",[result objectForKey:@"message"]); **<---- Error Occurs Here.**
// NSString *message = [result objectForKey:@"message"];
//NSLog(@"Message=%@",message);
}
}
}
错误 ：
-[__ NSCFString objectForKey：]：无法识别的选择器已发送到实例0x93e9880 2013-11-26 10：43：07.723 M [608：11903] ***由于未捕获的异常'NSInvalidArgumentException'而终止了应用程序，原因：'-[__ NSCFString objectForKey： ]：无法识别的选择器已发送到实例0x93e9880'
JSON响应...
syncMessage = {
code = 0;
fromdate = "-0-";
message = "You have exceeded your leave count";
todate = "-0-";
}
请帮忙。
现在，相同的代码适用于该JSON，这可能是什么问题？我的res变量为空。
{"synchData":{"message":"DCR Sync successful","code":1,"date":"2013-11-24"}}
问题出在代码解析中。
这是您的JSON数据
{
synchData = {
code = 0;
fromdate = "-0-";
message = "You have exceeded your leave count";
todate = "-0-";
};
}
synchData不是数组，而是它的字典，而您正在将字典设置为数组，这就是问题所在。
所以我认为问题出在此代码之后
NSArray *syncMessage = [res objectForKey:@"synchData"];
NSLog(@"syncMessage = %@",syncMessage);
// NSDictionary *dict = [syncMessage objectAtIndex:2];
// NSLog(@"message = %@",[dict objectForKey:@"message"]);
for (NSDictionary *result in syncMessage) {
NSLog(@"result = %@",[result objectForKey:@"message"]); **<---- Error Occurs Here.**
// NSString *message = [result objectForKey:@"message"];
//NSLog(@"Message=%@",message);
}
}
像这样做
NSDictionary *syncMessage = [res objectForKey:@"synchData"];
NSLog(@"result = %@",[syncMessage objectForKey:@"message"]);
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我来说两句