サーバーから正しい出力が得られません。私が毎回返す応答は次のとおりです。
なくなった
/prod/bwckgens.p_proc_term_datehas been permanently removed from this server.
これは通常、最初にこのページを通過するのではなく、Web ブラウザをここのページに誘導した場合に受信されます。これにより、Cookie が保存されていないという結論に達しますが、これはすべて NSURLConnection オブジェクトによって処理されるというドキュメントを読みました。ここで私が間違っていることはありますか?
#import "PCFViewController.h"
@interface PCFViewController ()
@end
NSMutableData *mutData;
@implementation PCFViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)queryServer {
NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckschd.p_disp_dyn_sched"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:3.0];
//the reason I perform a GET here is just to get a cookie and communicate like a normal web browser, since directly doing a POST to the proper address isn't working
[request setHTTPMethod:@"GET"];
[request setValue:@"text/html; charset=UTF-8" forHTTPHeaderField:@"Content-Type"];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (connection) {
mutData = [NSMutableData data];
}
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"Succeeded! Received %d bytes of data",[mutData length]);
NSString *str = [[NSString alloc] initWithData:mutData encoding:NSUTF8StringEncoding];
//just to see the contents(for debugging)
NSLog(@"%@", str);
[self handleConnection:connection];
}
-(void)handleConnection:(NSURLConnection *)connection
{
//this is the first step
if ([@"/prod/bwckschd.p_disp_dyn_sched" isEqualToString:[[[connection originalRequest] URL] path]]) {
//first request
//POST
NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckgens.p_proc_term_date"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:3.0];
[request setHTTPMethod:@"POST"];
NSString *args = @"p_calling_proc=bwckschd.p_disp_dyn_sched&p_term=201320";
NSData *requestBody = [args dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:requestBody];
connection = [connection initWithRequest:request delegate:self];
[connection start];
if (connection) {
mutData = [NSMutableData data];
}
//second step. Here I send the list of classes(COMPUTER SCIENCE) I want to display as well as the term SPRING2013
}else if([@"/prod/bwckgens.p_proc_term_date" isEqualToString:[[[connection currentRequest] URL] path]]) {
NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckschd.p_get_crse_unsec"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed
timeoutInterval:3.0];
[request setHTTPMethod:@"POST"];
NSString *args = @"term_in=201320&sel_subj=dummy&sel_day=dummy&sel_schd=dummy&sel_insm=dummy&sel_camp=dummy&sel_levl=dummy&sel_sess=dummy&sel_instr=dummy&sel_ptrm=dummy&sel_attr=dummy&sel_subj=CS&sel_crse=dummy&sel_title=dummy&sel_schd=%25&sel_from_cred=&sel_to_cred=&sel_camp=%25&sel_ptrm=%25&sel_instr=%25&sel_sess=%25&sel_attr=%25&begin_hh=0&begin_mi=0&begin_ap=a&end_hh=0&end_mi=0&end_ap=a";
NSData *requestBody = [args dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:requestBody];
connection = [connection initWithRequest:request delegate:self];
[connection start];
if (connection) {
mutData = [NSMutableData data];
}
//the courses should be shown now I have to parse the data
}else if([@"/prod/bwckschd.p_get_crse_unsec" isEqualToString:[[[connection currentRequest] URL] path]]) {
}
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(@"%@\n", error.description);
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[mutData setLength:0];
NSLog(@"%@\n", response.description);
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[mutData appendData:data];
}
@end