IOS NSDictionary，JSON ，XML 转化

最新推荐文章于 2021-06-22 01:43:17 发布

隋唐团队

最新推荐文章于 2021-06-22 01:43:17 发布

阅读量639

点赞数

CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/s0228g0228/article/details/41313053

本文介绍了一种在iOS开发中实现XML与JSON格式互相转换的方法。通过使用XMLReader、XMLWriter及JSONKit等第三方库，实现了从XML字符串到NSDictionary再到JSON字符串的转换，并最终再转换回XML格式。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

- (BOOL)application:(UIApplication *)applicationdidFinishLaunchingWithOp tions:(NSDictionary *)launchOptions

{

[self test];

// Override point forcustomization after application launch.

return YES;

}

-(void)test {

//XML文本范例

NSString *testXMLString =@"Cake0.55RegularChocolateBluebe rryNoneGlazedSugar";

NSLog(@"xml string[\n%@\n]",testXMLString);

// 解析XML为NSDictionary

NSError *parseError = nil;

NSDictionary *xmlDictionary = [XMLReaderdictionaryForXMLString:testXMLStringerror:&parseError];

// 打印 NSDictionary

NSLog(@"%@", xmlDictionary);

//NSDictionary转换为Data

NSData* jsonData = [NSJSONSerializationdataWithJSONObject:xmlDictionary options:NSJSONWritingPrettyPrint ederror:&parseError];

//Data转换为JSON

NSString* str = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];

NSLog(@"jsonData string[\n%@\n]", str);

//字符组转换为NSDictionary

NSDictionary *jsonDict = [strobjectFromJSONString];

//NSDictionary转换为XML的plist格式

NSData *xmlData = [NSPropertyListSerializat iondataFromPropertyList:jsonDict

format:NSPropertyListXMLFormat_v1_0

errorDescription:NULL];

//Data转换为NSString输出编码为UTF-8

NSLog(@"XML: %@", [[NSString alloc]initWithData:xmlData encoding:NSUTF8StringEncoding]);

NSLog(@"%@",[XMLWriterXMLStringFromDictionary:jsonDict withHeader:NO]);

}

去掉nsstring 空格
NSString* strJson = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    strJson = [strJson stringByReplacingOccurrencesOfString:@" " withString:@""];
    strJson = [strJson stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    strJson = [strJson stringByReplacingOccurrencesOfString:@"\r" withString:@""];
    strJson = [strJson stringByReplacingOccurrencesOfString:@"\n" withString:@""];

//其中用到了三个类库，分别为

1，JSONKit https://github.com/johnezang/JSONKit

2，XMLWriter https://github.com/ahmyi/XMLWriter

3，XMLReader https://github.com/amarcadet/XMLReader

源码下载地址： http://download.youkuaiyun.com/download/p709723778/5725585

下面连接是XML转换为Dictionary

https://github.com/nicklockwood/XMLDictionary

http://download.youkuaiyun.com/detail/p709723778/6706331