利用NSJSONSerialization解析Json格式
ios中利用NSJSONSerialization来解析利用Json格式还是很容易的。直接把Jason数据当作Dictionary来用就可以了，然后要得到某个项的值就直接用NSDictionary的objectForKey方法就可以（通过键－Key，得到对应的Object-值即可），注意，通过objectForKey得到的值，可能还是一个字典（NSDictionary），然后再通过objectForKey得到下一级字典的值。
{
data = {
"header_img" = "http://q.qlogo.cn/qqapp/103/1840390E30E7ADD1/100";
nickname = syme;
token = b7b0b6sd582df3ab61d1im815900;
uid = 4;
};
info = "\U767b\U5f55\U6210\U529f";
status = 1;
}
-(void)requestFinished:(ASIHTTPRequest *)request
{
NSData *responseData = [requestresponseData];
if (responseData){
NSError *error =nil;
NSDictionary *responseDict = [NSJSONSerializationJSONObjectWithData:responseData
options:NSJSONReadingMutableLeaves
error:&error];
NSString *status = [responseDictobjectForKey:@"status"];
NSString *info = [responseDictobjectForKey:@"info"];
NSString *uid =nil;
NSString *nickname =nil;
NSString *token =nil;
NSString *header_img =nil;
NSDictionary *dataDic = [responseDictobjectForKey:@"data"];
if (dataDic) {
uid = [dataDicobjectForKey:@"uid"];
nickname = [dataDicobjectForKey:@"nickname"];
token = [dataDicobjectForKey:@"token"];
header_img = [dataDicobjectForKey:@"header_img"];
}
}
或上级字典里某个键的值又是一数组，数组的元素又是字典，如下：
{"status":1,"info":"","data":[{"id":"1","name":"test1"},{"id":"1","name":"test2"},{"id":"1","name":"test3"},{"id":"1","name":"test4"},{"id":"1","name":"test5"},{"id":"1","name":"test6"}]}
-(void)getSongListFinished:(ASIHTTPRequest *)request
{
NSData *responseData = [request responseData];
if (responseData){
NSError *error = nil;
NSDictionary *responseDict = [NSJSONSerializationJSONObjectWithData:responseData
options:NSJSONReadingMutableLeaves
error:&error];
NSLog(@"%@", responseDict);
NSString *status = [responseDict objectForKey:@"status"];
NSString *info = [responseDict objectForKey:@"info"];
NSArray *dicArray = [responseDict objectForKey:@"data"];
for (NSDictionary *oneSongDicin dicArray) {
NSString *songID = [oneSongDic objectForKey:@"id"];
NSString *songName = [oneSongDic objectForKey:@"name"];
NSLog(@"songid=%@, songName=%@", songID, songName);
}
int nStatus = [status intValue];
if (nStatus == 0) {
}
else if(nStatus ==1)
{
}
else{
}
[SVProgressHUDdismissWithSuccess:info];
}
}