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。
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：
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NSString *jsonStr = <p class="p1">@"{\"customer\":[{\"name\":\"roamer\",\"ycount\":\"232.4\",\"sumcount\":\"322.3\"},{\"name\":\"<span class="s1">王三</span>\",\"ycount\":\"221.2\",\"sumcount\":\"1123.2\"},{\"name\":\"<span class="s1">李四</span>\",\"ycount\":\"1221.2\",\"sumcount\":\"12123.2\"}]}"<span class="s2">;</span></p>; |
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NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding]; |
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NSError *error; |
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NSMutableDictionary *root = [[CJSONDeserializer deserializer] deserialize:jsonData error:&error]; |
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NSLog(@"Customers:%@", root); |
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NSMutableArray *customers = [root objectForKey:@"customer"]; |
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NSString *jsonTextStr = @"姓名:\n"; |
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for (NSMutableDictionary *customer in customers) { |
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NSString *name = [customer objectForKey:@"name"]; |
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name = [name stringByAppendingString:@"\n"]; |
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jsonTextStr = [jsonTextStr stringByAppendingString:name]; |
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NSLog(@"customer:%@",[customer objectForKey:@"name"]); |
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} |
输出结果：
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Customers:{ |
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customer = ( |
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{ |
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name = roamer; |
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sumcount = "322.3"; |
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ycount = "232.4"; |
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}, |
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{ |
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name = "\U738b\U4e09"; |
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sumcount = "1123.2"; |
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ycount = "221.2"; |
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}, |
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{ |
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name = "\U674e\U56db"; |
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sumcount = "12123.2"; |
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ycount = "1221.2"; |
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} |
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); |
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} |
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2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:roamer |
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2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:王三 |
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2012-06-15 14:08:20.406 TouchJsonTest[1495:f803] customer:李四 |
下面使用SBJson
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：
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//解析数据 |
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SBJsonParser *parser = [[SBJsonParser alloc] init]; |
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NSString *jsonStr = <p class="p1">@"{\"customer\":[{\"name\":\"roamer\",\"ycount\":\"232.4\",\"sumcount\":\"322.3\"},{\"name\":\"<span class="s1">王三</span>\",\"ycount\":\"221.2\",\"sumcount\":\"1123.2\"},{\"name\":\"<span class="s1">李四</span>\",\"ycount\":\"1221.2\",\"sumcount\":\"12123.2\"}]}"<span class="s2">;</span></p> |
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NSError *error = nil; |
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NSMutableDictionary *root = [[NSMutableDictionary alloc] initWithDictionary:[parser objectWithString:jsonStr error:&error]]; |
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//转换代码 不然会带来中文问题，诸如加()、：变成 = 等乱码问题 |
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SBJsonWriter *jsonWrite = [[SBJsonWriter alloc] init]; |
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NSString *jsonString = [jsonWrite stringWithObject:root]; |
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NSLog(@"JsonString:%@", jsonString); |
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[jsonWrite release]; |
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NSMutableArray *customers = [root objectForKey:@"customer"]; |
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NSLog(@"Customers:%@", customers); |
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|
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for (NSMutableDictionary *customer in customers) { |
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NSLog(@"Customer-name:%@", [customer objectForKey:@"name"]); |
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} |
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[self.jsonData setText:@"解析完成"]; |
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[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。
