#import <Foundation/Foundation.h> #import "JSONKit.h" int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSString *res = nil; /* * json格式编码 */ //字符串 NSString *str = @"this is a nsstring"; res = [str JSONString]; NSLog(@"res= %@", [NSString stringWithString: res]); //res= "this is a nsstring" //数组 NSArray *arr = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",nil]; res = [arr JSONString]; NSLog(@"res= %@", [NSString stringWithString: res]); [arr release]; //res= ["One","Two","Three"] //字典类型(对象) NSArray *arr1 = [NSArray arrayWithObjects:@"dog",@"cat",nil]; NSArray *arr2 = [NSArray arrayWithObjects:[NSNumber numberWithBool:YES],[NSNumber numberWithInt:30],nil]; NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:arr1,@"pets",arr2,@"other",nil]; res = [dic JSONString]; NSLog(@"res= %@", [NSString stringWithString: res]); //res= {"pets":["dog","cat"],"other":[true,30]} /* * json格式解码 */ JSONDecoder *jd=[[JSONDecoder alloc] init]; //针对NSData数据 NSData *data = [dic JSONData]; NSDictionary *ret = [jd objectWithData: data]; NSLog(@"res= %@", [ret objectForKey:@"pets"]); //res= ( // dog, // cat //) NSLog(@"res= %@", [[ret objectForKey:@"other"] objectAtIndex:0]); //res= 1 //针对NSString字符串数据 NSString *nstr = [dic JSONString]; NSDictionary *ret2 = [jd objectWithUTF8String:(const unsigned char *)[nstr UTF8String] length:(unsigned int)[nstr length]]; NSLog(@"res= %d", [[ret2 objectForKey:@"pets"] indexOfObject:@"cat"]); //res= 1 NSLog(@"res= %@", [[ret2 objectForKey:@"other"] objectAtIndex:1]); //res= 30 [jd release]; [pool drain]; return 0; }