2 JSON解析方案

1 使用NSJSONSerialization解析

http://api.36wu.com/Weather/GetWeather这个网址获取天气信息需要申请key值，试用期小于1天。

-(void)JSONSerializationParse{NSURL *url = [NSURL URLWithString:@"http://api.36wu.com/Weather/GetWeather"];NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];request.HTTPMethod = @"POST";//district表示区域id，authkey申请的试用值，只允许试用一天。所以过了2016/9/9就获取不到数据了，key自己去http://www.36wu.com申请试用。request.HTTPBody = [@"district=101010100&format=json&authkey=b0aa5ef944514793812734e0b36e5740" dataUsingEncoding:NSUTF8StringEncoding];[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * response, NSData * data, NSError * connectionError) {NSLog(@"conncetionError:%@",connectionError);NSLog(@"string:%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];NSLog(@"dictionary:%@",dictionary);NSDictionary *dataDictionary = dictionary[@"data"];NSLog(@"weather=%@,refreshTime=%@",dataDictionary[@"weather"],dataDictionary[@"refreshTime"]);}];
}

打印如下：

2016-09-09 15:59:01.500 JSON解析[942:983924] conncetionError:(null)
2016-09-09 15:59:01.502 JSON解析[942:983924] string:{"data":{"areaid":101010100,"prov":"北京","city":"北京","district":"北京","dateTime":"2016年9月9日","temp":"31℃","minTemp":"18℃","maxTemp":"31℃","weather":"晴","windDirection":"西风","windForce":"2级","humidity":"27%","img_1":"1","img_2":"4","refreshTime":"15:54"},"message":"OK","status":200}
2016-09-09 15:59:01.503 JSON解析[942:983924] dictionary:{data =     {areaid = 101010100;city = "\U5317\U4eac";dateTime = "2016\U5e749\U67089\U65e5";district = "\U5317\U4eac";humidity = "27%";"img_1" = 1;"img_2" = 4;maxTemp = "31\U2103";minTemp = "18\U2103";prov = "\U5317\U4eac";refreshTime = "15:54";temp = "31\U2103";weather = "\U6674";windDirection = "\U897f\U98ce";windForce = "2\U7ea7";};message = OK;status = 200;
}
2016-09-09 15:59:01.508 JSON解析[942:983924] weather=晴,refreshTime=15:54

2 使用JSONKit解析

需要向工程中导入JSONKit.h和JSONKit.m文件。使用处需要引头文件

#import "JSONKit.h"

由于我导入的这个版本不支持ARC，所以需要对JSONKit.m文件设置禁止ARC

-(void)JSONKitParse{NSURL *url = [NSURL URLWithString:@"http://api.36wu.com/Train/GetTicketInquiry"];NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];request.HTTPMethod = @"POST";//查询火车票接口  <span><span class="comment">authkey申请的试用值，只允许试用一天。所以过了2016/9/9就获取不到数据了，key自己去http://www.36wu.com申请试用</span></span>request.HTTPBody = [@"startStation=北京&arriveStation=上海&date=2016-10-01&authkey=b0aa5ef944514793812734e0b36e5740" dataUsingEncoding:NSUTF8StringEncoding];[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * response, NSData * data, NSError * connectionError) {NSLog(@"conncetionError:%@",connectionError);NSLog(@"string:%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);//使用JSONkit方法NSDictionary *dictionary = [data objectFromJSONData];NSLog(@"dictionary:%@",dictionary);NSArray *dataAry = dictionary[@"data"];NSLog(@"dataAry count=%lu",(unsigned long)dataAry.count);}];
}

由于数据太多就不全贴出来了。

//只是打印的string中的一部分
{"train_no":"240000G1010C","train_code":"G101","start_station":"北京南","end_station":"上海虹桥","from_station":"北京南","to_station":"上海虹桥","start_time":"06:44","arrive_time":"12:38","day_difference":"0","lishi":"05:54","from_station_no":"01","to_station_no":"11","gg_num":"--","gr_num":"--","qt_num":"--","rw_num":"--","rz_num":"--","tz_num":"--","wz_num":"--","yb_num":"--","yw_num":"--","yz_num":"--","ze_num":"522","zy_num":"47","swz_num":"21"}
//这是dictionary中的一部分
{"arrive_time" = "12:38";"day_difference" = 0;"end_station" = "\U4e0a\U6d77\U8679\U6865";"from_station" = "\U5317\U4eac\U5357";"from_station_no" = 01;"gg_num" = "--";"gr_num" = "--";lishi = "05:54";"qt_num" = "--";"rw_num" = "--";"rz_num" = "--";"start_station" = "\U5317\U4eac\U5357";"start_time" = "06:44";"swz_num" = 21;"to_station" = "\U4e0a\U6d77\U8679\U6865";"to_station_no" = 11;"train_code" = G101;"train_no" = 240000G1010C;"tz_num" = "--";"wz_num" = "--";"yb_num" = "--";"yw_num" = "--";"yz_num" = "--";"ze_num" = 522;"zy_num" = 47;}

3 使用SBJson解析方法

需要导入SBJson.h文件

#import "SBJson.h"

-(void)SBJsonParse{NSURL *url = [NSURL URLWithString:@"http://api.36wu.com/Translate/GetTranslate"];NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];request.HTTPMethod = @"POST";//翻译，不过服务下限了，翻译不出来。不过可以看一下SBJson解析。<span><span class="comment">authkey申请的试用值，只允许试用一天。所以过了2016/9/9就获取不到数据了，key自己去http://www.36wu.com申请试用</span></span>request.HTTPBody = [@"q=今天天气很好&output=zh_en&format=json&authkey=b0aa5ef944514793812734e0b36e5740" dataUsingEncoding:NSUTF8StringEncoding];[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * response, NSData * data, NSError * connectionError) {NSLog(@"conncetionError:%@",connectionError);NSLog(@"string:%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);//使用SBJson方法解析SBJsonParser *sbJsonParse = [[SBJsonParser alloc] init];NSDictionary *dictionary = [sbJsonParse objectWithData:data];NSLog(@"dictionary:%@",dictionary);}];
}

过期了，没能正确翻译。

2016-09-09 17:12:52.218 JSON解析[985:995210] conncetionError:(null)
2016-09-09 17:12:52.220 JSON解析[985:995210] string:{"status":200,"message":"OK","data":[{"dst":"旧服务已下线，请迁移至 http://api.fanyi.baidu.com","src":"The previous service has been closed, please visit http://api.fanyi.baidu.com to apply for new service."}]}
2016-09-09 17:12:52.223 JSON解析[985:995210] dictionary:{data =     ({dst = "\U65e7\U670d\U52a1\U5df2\U4e0b\U7ebf\Uff0c\U8bf7\U8fc1\U79fb\U81f3 http://api.fanyi.baidu.com";src = "The previous service has been closed, please visit http://api.fanyi.baidu.com to apply for new service.";});message = OK;status = 200;
}

4 使用TouchJson解析

解析需要引入头文件

#import "CJSONDeserializer.h"

转换某对象到JSON数据——即生成，序列化操作
需要引入文件：

#import "CJSONDataserializer.h"

-(void)TouchJsonParse{NSURL *url = [NSURL URLWithString:@"http://api.36wu.com/Bus/GetLineInfo"];NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];request.HTTPMethod = @"POST";//公交查询  一天就过期了这个key值request.HTTPBody = [@"city=北京&line=21&format=json&authkey=b0aa5ef944514793812734e0b36e5740" dataUsingEncoding:NSUTF8StringEncoding];[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * response, NSData * data, NSError * connectionError) {NSLog(@"conncetionError:%@",connectionError);NSLog(@"string:%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);//使用TouchJson解析NSDictionary *dictionary = [[CJSONDeserializer deserializer] deserialize:data error:nil];NSLog(@"dictionary:%@",dictionary);}];
}

该查询数据很长，就不全贴出来了。