如何获取URL的源代码

Question

当我尝试请求此URL时,我无法获取HTML源代码:http://www.google.co.in/search？ q = search

NSURL *url = [NSURL URLWithString:@"http://www.google.co.in/search?q=search"];

NSMutableURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
NSData *data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil];
NSLog(@"Webdata : %@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);

数据始终为NULL.

Answer 1

这有效:

NSURL *url = [NSURL URLWithString:@"http://www.google.co.in/search?q=search"]; 
NSString *webData= [NSString stringWithContentsOfURL:url]; 
NSLog(@"%@",webData);

但是如果你需要使用NSURLConnection,你应该异步使用它并实现willSendRequest方法来处理重定向.

- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response;