JSONKit 使用示例

大佬教程收集整理的这篇文章主要介绍了JSONKit 使用示例，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

JSONKit是Object-C@L_675_1@处理json数据的库，非常高效而且易用，对比同类型的库有非常明显的性能优势，见下图：

JSON和Object-C中数据类型的映射关系如下表所示

下面写@L_675_1@简单的程序使用一下JSONKit（只需下载头文件以及源文件，放在项目目录下）

@H_197_103@@H_874_106@#import<Foundation/Foundation.h>
1. @H_874_106@#import"lib/JSONKit.h"
@H_197_103@
2. int@H_601_105@main(intargc,constchar*argv[]){
@H_197_103@NSAutoreleasePool*pool=[[NSAutoreleasePoolalloc]init];
@H_197_103@NSString*res=nil;
@H_197_103@/*
5. *json格式编码
@H_197_103@*/
@H_197_103@//字符串
7. NSString*str=@"thisisansString";
@H_197_103@res=[strJSONString];
8. NSLog(@"res=%@",[NSStringStringWithString:res]);
@H_197_103@//res="thisisansString"
@H_197_103@
10. //数组
@H_197_103@NSArray*arr=[[NSArrayalloc]initWithObjects:@"One",@"Two",@"Three",nil];
11. res=[arrJSONString];
@H_197_103@NSLog(@"res=%@",[NSStringStringWithString:res]);
12. [arrrelease];
@H_197_103@//res=["One","Two","Three"]
@H_197_103@
14. //字典类型（对象）
@H_197_103@NSArray*arr1=[NSArrayarrayWithObjects:@"dog",@"cat",nil];
15. NSArray*arr2=[NSArrayarrayWithObjects:[NSnumbernumberWithBool:YES],[NSnumbernumberWithInt:30],nil];
@H_197_103@NSDictionary*Dic=[NSDictionaryDictionaryWithObjectsAndKeys:arr1,@"pets",arr2,@"other",nil];
16. res=[DicJSONString];
@H_197_103@NSLog(@"res=%@",[NSStringStringWithString:res]);
17. //res={"pets":["dog","cat"],"other":[true,30]}
@H_197_103@
@H_197_103@/*
19. *json格式解码
@H_197_103@*/
20. JSONDecoder*jd=[[JSONDecoderalloc]init];
@H_197_103@
21. //针对NSData数据
@H_197_103@NSData*data=[DicJSONData];
22. NSDictionary*ret=[jdobjectWithData:data];
@H_197_103@NSLog(@"res=%@",[retobjectForKey:@"pets"]);
23. //res=(
@H_197_103@//dog,
24. //cat
@H_197_103@//)
25. NSLog(@"res=%@",[[retobjectForKey:@"other"]objectATindex:0]);
@H_197_103@//res=1
@H_197_103@//针对NSString字符串数据
27. NSString*nstr=[DicJSONString];
@H_197_103@NSDictionary*ret2=[jdobjectWithUTF8String:(constunsignedchar*)[nstrUTF8String]length:(unsignedint)[nstrlength]];
28. NSLog(@"res=%d",[[ret2objectForKey:@"pets"]indexOfObject:@"cat"]);
@H_197_103@//res=1
29. NSLog(@"res=%@",[[ret2objectForKey:@"other"]objectATindex:1]);
@H_197_103@//res=30
@H_197_103@[jdrelease];
@H_197_103@[pooldrain];
32. return0;
@H_197_103@}