如题,我的代码如下。
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
configuration.requestCachePolicy = NSURLRequestReturnCacheDataElseLoad;
[configuration setURLCache:[NSURLCache sharedURLCache]];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"%@",error);
}
NSString *responseStr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"%@",responseStr);
}];
[task resume];
不能从缓存当中读到数据。手机在2G网下,每次还是要读几秒钟才出来。
为什么啊?问题在哪啊
换个地址试试,百度的过期时间就是请求的时候