NSURL *url = [NSURL URLWithString:@"http://www.test.com/member/index.php?name=cat&age=6"];
    NSLog(@"%@", url.scheme);  // http
    NSLog(@"%@", url.host);  // www.test.com
    NSLog(@"%@", url.path);  // /member/index.php
    if ([url.pathComponents count] >= 2) {
        NSLog(@"%@", [url.pathComponents objectAtIndex:1]);  // member
    }
    NSLog(@"%@", url.lastPathComponent);  // index.php

子網域以及傳入的參數要自行處理。