网络中数据的传输往往是以Json或XML格式进行的,如新浪微博、腾讯微博、人人网等。今天主要介绍一下ios下Json数据的解析。
如果你还不了解什么是Json数据,请猛击。
首先是使用TouchJson进行解析:
TouchJson点击下载
首先导入
将Source文件加下的所以文件导入工程,在合适的位置添加CJSONDeserializer.h头文件。
代码:
NSString *jsonStr =@"{\"customer\":[{\"name\":\"roamer\",\"ycount\":\"232.4\",\"sumcount\":\"322.3\"},{\"name\":\"王三\",\"ycount\":\"221.2\",\"sumcount\":\"1123.2\"},{\"name\":\"李四\",\"ycount\":\"1221.2\",\"sumcount\":\"12123.2\"}]}";
; NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding]; NSError *error; NSMutableDictionary *root = [[CJSONDeserializer deserializer] deserialize:jsonData error:&error]; NSLog(@"Customers:%@", root); NSMutableArray *customers = [root objectForKey:@"customer"]; NSString *jsonTextStr = @"姓名:\n"; for (NSMutableDictionary *customer in customers) { NSString *name = [customer objectForKey:@"name"]; name = [name stringByAppendingString:@"\n"]; jsonTextStr = [jsonTextStr stringByAppendingString:name]; NSLog(@"customer:%@",[customer objectForKey:@"name"]); }
Customers:{ customer = ( { name = roamer; sumcount = "322.3"; ycount = "232.4"; }, { name = "\U738b\U4e09"; sumcount = "1123.2"; ycount = "221.2"; }, { name = "\U674e\U56db"; sumcount = "12123.2"; ycount = "1221.2"; } ); } 2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:roamer 2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:王三 2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:李四
SBJson下载
首先导入
将Classes文件加下的所以文件导入工程,在合适的位置添加SBJson.h头文件。
代码:
//解析数据 SBJsonParser *parser = [[SBJsonParser alloc] init]; NSString *jsonStr =@"{\"customer\":[{\"name\":\"roamer\",\"ycount\":\"232.4\",\"sumcount\":\"322.3\"},{\"name\":\"王三\",\"ycount\":\"221.2\",\"sumcount\":\"1123.2\"},{\"name\":\"李四\",\"ycount\":\"1221.2\",\"sumcount\":\"12123.2\"}]}";
NSError *error = nil; NSMutableDictionary *root = [[NSMutableDictionary alloc] initWithDictionary:[parser objectWithString:jsonStr error:&error]]; //转换代码 不然会带来中文问题,诸如加()、:变成 = 等乱码问题 SBJsonWriter *jsonWrite = [[SBJsonWriter alloc] init]; NSString *jsonString = [jsonWrite stringWithObject:root]; NSLog(@"JsonString:%@", jsonString); [jsonWrite release]; NSMutableArray *customers = [root objectForKey:@"customer"]; NSLog(@"Customers:%@", customers); for (NSMutableDictionary *customer in customers) { NSLog(@"Customer-name:%@", [customer objectForKey:@"name"]); } [self.jsonData setText:@"解析完成"]; [self.parseBtn setTitle:@"Done" forState:UIControlStateNormal];
使用TouchJson和SBJson都可以快速的完成Json数据的解析,两者使用起来都比较简单,但TouchJson性能更好一些推荐使用。