查询字符串中某部分的字符串
NSString *string=@"http://localhost:8099/test/user=admin&pwd=123";
NSRange rang=[string rangeOfString:@"8099"];
if (rang.location==NSNotFound) {
NSLog(@"未找到");
}else
{
NSLog(@"location=%ld,length=%ld",rang.location,rang.length);
}
//快速输出范围
NSLog(@"%@",NSStringFromRange(rang));
NSRange rang=[string rangeOfString:@"user="];
NSRange rang1=[string rangeOfString:@"&pwd"];
NSUInteger userLocation=rang.location+rang.length,userLength=rang1.location-userLocation;
NSRange userRang={userLocation,userLength};
NSString *user=[string substringWithRange:userRang];
NSLog(@"%@",user);