1.使用TouchJson
//获取API接口
NSURL *url = [NSURLURLWithString:@"http://m.weather.com.cn/data/101010100.html"];
//定义一个NSError对象，用于捕获错误信息
NSError *error;
NSString *jsonString = [NSStringstringWithContentsOfURL:url encoding:NSUTF8StringEncodingerror:&error];
NSLog(@"jsonString--->%@",jsonString);
//将解析得到的内容存放字典中，编码格式为UTF8，防止取值的时候发生乱码
NSDictionary *rootDic = [[CJSONDeserializerdeserializer]deserialize:[jsonStringdataUsingEncoding:NSUTF8StringEncoding]error:&error];
//因为返回的Json文件有两层，去第二层内容放到字典中去
NSDictionary *weatherInfo = [rootDic objectForKey:@"weatherinfo"];
NSLog(@"weatherInfo--->%@",weatherInfo);
//取值打印
txtView.text = [NSStringstringWithFormat:@"今天是 %@ %@ %@ 的天气状况是：%@ %@ ",[weatherInfo
objectForKey:@"date_y"],[weatherInfo objectForKey:@"week"],[weatherInfo objectForKey:@"city"], [weatherInfo objectForKey:@"weather1"], [weatherInfo objectForKey:@"temp1"]];
2.使用SBJSON
NSURL *url = [NSURLURLWithString:@"http://m.weather.com.cn/data/101010100.html"];
NSError *error = nil;
NSString *jsonString = [NSStringstringWithContentsOfURL:url encoding:NSUTF8StringEncodingerror:&error];
SBJsonParser *parser = [[SBJsonParseralloc] init];
NSDictionary *rootDic = [parser objectWithString:jsonString error:&error];
NSDictionary *weatherInfo = [rootDic objectForKey:@"weatherinfo"];
NSLog(@"%@", [weatherInfoallValues]);
txtView.text = [NSStringstringWithFormat:@"今天是 %@ %@ %@ 的天气状况是：%@ %@ ",[weatherInfo
objectForKey:@"date_y"],[weatherInfo objectForKey:@"week"],[weatherInfo objectForKey:@"city"], [weatherInfo objectForKey:@"weather1"], [weatherInfo objectForKey:@"temp1"]];
3.使用系统自带JSON解析
+ (void)netWorkWithURL:(NSString *)urlStr completion:(void (^)(id))block
{
NSString *str = [urlStrstringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURLURLWithString:str];
NSMutableURLRequest *request = [[NSMutableURLRequestalloc]initWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:60];
request.HTTPMethod = @"get";
[NSURLConnectionsendAsynchronousRequest:request queue:[NSOperationQueuemainQueue] completionHandler:^(NSURLResponse *response,NSData *data, NSError *connectionError) {
NSString *cachesPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask, YES)lastObject];
NSInteger hash = [urlStr hash];
NSString *filePath = [cachesPathstringByAppendingPathComponent:[NSStringstringWithFormat:@"%d.aaa", hash]];
NSError *error = nil;
if (data != nil) {
id result = [NSJSONSerializationJSONObjectWithData:data options:NSJSONReadingMutableContainerserror:&error];
block(result);
BOOL re = [NSKeyedArchiverarchiveRootObject:data toFile:filePath];
NSLog(@"%d", re);
} else {
NSData *dataRead = [NSKeyedUnarchiverunarchiveObjectWithFile:filePath];
id result = [NSJSONSerializationJSONObjectWithData:dataRead options:NSJSONReadingMutableContainerserror:nil];
block(result);
}
}];
}