Ios 如何通过NSURLConnection发送大字符串

这是我的密码

- (void)loadData:(NSString *)url {
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
    [[NSURLConnection alloc] initWithRequest:request delegate:self];
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"connection found---------");
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    NSLog(@"reciving data---------");
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    NSLog(@"connection fail---------");
    [self.pddelegate connectionError];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    NSLog(@"data posting done---------");
    [self.pddelegate dataPosted];
}

如果url变得更大，并在日志中给出连接失败，则它不起作用

像

---

有关获取类型请求长度，请参阅本文

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要发送大字符串，请使用POST类型请求而不是GET类型。

我们有两种发送数据的方法。 1.GET方法：仅用于固定长度或有限长度的字符串。 2.POST方法：用于在比较get方法时发送更多字符串

我已经给出了使用PostMethod的示例

NSString *post =[[NSString alloc] initWithFormat:@"%@",YourString];
NSURL *url=[NSURL URLWithString:*@"YourURL like www.google.com"*];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue: @"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
request.timeoutInterval = 60;    
NSError *error = nil;
NSURLResponse *response;   
NSData *urlData=[NSURLConnection sendSynchronousRequest:request 

returningResponse:&response error:&error];
NSString *errStr = _stringEmpty;
@try { errStr = [error localizedDescription]; }@catch (NSException * exception){ }

---

如果出现任何错误，errStr将显示错误。

过去，我在iOS中使用了一些长度约为2000个字符的URL，没有问题。NSURL、NSURLRequest和NSURLConnection都管理得很好。如果您的URL短于此，则问题可能不是由于其长度，而是与URL的构造方式有关。

什么不起作用，在尝试创建URL之前您是否对任何字符进行了编码。是的，我在创建URL之前使用base64编码。请您将此信息放入：

NSLog（@“%@，[error localizedDescription]）;在
连接中：didFailWithError:
并告诉我们输出是什么？问题可能不是url的大小，而是转义字符。@SimonM上述日志的输出是错误的url
NSString *post =[[NSString alloc] initWithFormat:@"%@",YourString];
NSURL *url=[NSURL URLWithString:*@"YourURL like www.google.com"*];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue: @"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
request.timeoutInterval = 60;    
NSError *error = nil;
NSURLResponse *response;   
NSData *urlData=[NSURLConnection sendSynchronousRequest:request 

returningResponse:&response error:&error];
NSString *errStr = _stringEmpty;
@try { errStr = [error localizedDescription]; }@catch (NSException * exception){ }