JSON解析（序列化和反序列化）

JSON的序列化，代码示例：

    NSDictionary *dic = @{@"name":@"zhuzhu", @"age":@25};
    if (![NSJSONSerialization isValidJSONObject:dic]) {
        NSLog(@"该对象不支持转换");
        return;
    }
    /**
     - Top level object is an NSArray or NSDictionary
     - All objects are NSString, NSNumber, NSArray, NSDictionary, or NSNull
     - All dictionary keys are NSStrings
     - NSNumbers are not NaN or infinity
     */
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:kNilOptions error:nil];
    NSString *jsonStr = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    NSLog(@"%@", jsonStr);

JSON的反序列化，代码示例：

NSDictionary *dic = @{@"name":@"zhuzhu", @"age":@25};
    if (![NSJSONSerialization isValidJSONObject:dic]) {
        NSLog(@"该对象不支持转换");
        return;
    }
    /**
     - Top level object is an NSArray or NSDictionary
     - All objects are NSString, NSNumber, NSArray, NSDictionary, or NSNull
     - All dictionary keys are NSStrings
     - NSNumbers are not NaN or infinity
     */
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:kNilOptions error:nil];
　　// 反序列的代码
    NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData options:kNilOptions error:nil]; NSLog(@"dic=%@", jsonDic);