字典转 JSON
- (NSString *) JsonString:(NSDictionary *)dic
{
NSString *dicStr = [self dictionaryToJson:dic];
dicStr = [dicStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
/* 有些服务端规定 需要去掉空格 ”\“ 换行符等
dicStr = [dicStr stringByReplacingOccurrencesOfString:@" " withString:@""];
dicStr = [dicStr stringByReplacingOccurrencesOfString:@"\n" withString:@""];
dicStr = [dicStr stringByReplacingOccurrencesOfString:@"\\" withString:@""];
dicStr = [dicStr stringByReplacingOccurrencesOfString:@"\r" withString:@""];
*/
string = dicStr;
return string;
}
- (NSString*)dictionaryToJson:(NSDictionary *)dic
{
NSError *parseError = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrintederror:&parseError];
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
JSON 转 字典 或者 数组
NSArray * ArrayWithJsonString(NSString* jsonString)
{
if (jsonString == nil) {
return nil;
}
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
//数组 或者字典
NSArray *array = [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableContainers
error:&err];
if(err) {
NSLog(@"json解析失败：%@",err);
return nil;
}
return array;
}