我正在尝试上传文件，我遇到了一些问题。我有一个来自本地路径的输入流：
self.stmIn = [NSInputStream inputStreamWithFileAtPath:localPath];
变量localPath具有以下URL：
/Users/JBG/Library/Application Support/iPhone Simulator/6.0/Applications/734F4DC6-8683-42BB-AB0D-A5553BC22C55/Documents/100046-003.jpg
我可以毫无问题地打开流。当我尝试阅读它时会出现问题：
bytesRead = [self.stmIn read:self.buffer maxLength:kSendBufferSize];
结果是-1。我不明白这个问题。有什么想法吗？
谢谢和问候
编辑：代码是基于Apple的SimpleFTPSample（但是我在UIViewController旁边将其实现为NSObject类）编辑：使用streamError方法获取此信息：错误域= NSPOSIXErrorDomain代码= 14“操作无法完成。错误的地址”
编辑：我添加了代码：
- (uint8_t *)buffer {
return self->buffer;
}
- (BOOL)isSending {
return (self.stmOut != nil);
}
- (void)startSend {
BOOL success;
NSURL *url;
[[NetworkManager sharedInstance] didStartNetworkOperation];
assert([[NSFileManager defaultManager] fileExistsAtPath:localPath]);
assert(self.stmOut == nil); // don't tap send twice in a row!
assert(self.stmIn == nil); // ditto
url = [[NetworkManager sharedInstance] smartURLForString:ftpPath];
success = (url != nil);
if (success) {
url = CFBridgingRelease(CFURLCreateCopyAppendingPathComponent(NULL, (CFURLRef) url, (CFStringRef) [localPath lastPathComponent], false));
success = (url != nil);
}
if ( ! success) {
NSLog(@"Invalid URL");
} else {
self.stmIn = [NSInputStream inputStreamWithFileAtPath:localPath];
assert(self.stmIn != nil);
[self.stmIn open];
self.stmOut = CFBridgingRelease(CFWriteStreamCreateWithFTPURL(NULL, (CFURLRef) url));
assert(self.stmOut != nil);
success = [self.stmOut setProperty:ftpUser forKey:(id)kCFStreamPropertyFTPUserName];
assert(success);
success = [self.stmOut setProperty:ftpPwd forKey:(id)kCFStreamPropertyFTPPassword];
assert(success);
self.stmOut.delegate = self;
[self.stmOut scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[self.stmOut open];
}
}
- (void)stopSendWithStatus:(NSString *)statusString {
if (self.stmOut != nil) {
[self.stmOut removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
self.stmOut.delegate = nil;
[self.stmOut close];
self.stmOut = nil;
}
if (self.stmIn != nil) {
[self.stmIn close];
self.stmIn = nil;
}
if (statusString == nil) {
statusString = @"Archivo subido";
}
[[NetworkManager sharedInstance] didStopNetworkOperation];
}
- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode {
assert(aStream == self.stmOut);
switch (eventCode) {
case NSStreamEventOpenCompleted: {
NSLog(@"Opened connection");
} break;
case NSStreamEventHasBytesAvailable: {
assert(NO);
} break;
case NSStreamEventHasSpaceAvailable: {
NSLog(@"Sending");
if (self.bufferOffset == self.bufferLimit) {
NSInteger bytesRead;
bytesRead = [self.stmIn read:self.buffer maxLength:kSendBufferSize];
if (bytesRead == -1) {
[self stopSendWithStatus:@"File read error"];
} else if (bytesRead == 0) {
[self stopSendWithStatus:nil];
} else {
self.bufferOffset = 0;
self.bufferLimit = bytesRead;
}
}
if (self.bufferOffset != self.bufferLimit) {
NSInteger bytesWritten;
bytesWritten = [self.stmOut write:&self.buffer[self.bufferOffset] maxLength:self.bufferLimit - self.bufferOffset];
assert(bytesWritten != 0);
if (bytesWritten == -1) {
[self stopSendWithStatus:@"Network write error"];
} else {
self.bufferOffset += bytesWritten;
}
}
} break;
case NSStreamEventErrorOccurred: {
[self stopSendWithStatus:@"Stream open error"];
} break;
case NSStreamEventEndEncountered: {
// ignore
} break;
default: {
assert(NO);
} break;
}
}
答案 0 :(得分：1)
试试这段代码..希望它能帮到你..
- (void)sendDidStart
{
// self.statusLabel.text = @"Sending";
[[NetworkManager sharedInstance] didStartNetworkOperation];
}
- (void)updateStatus:(NSString *)statusString
{
assert(statusString != nil);
//self.statusLabel.text = statusString;
}
- (void)sendDidStopWithStatus:(NSString *)statusString
{
if (statusString == nil) {
statusString = @"Put succeeded";
}
[[NetworkManager sharedInstance] didStopNetworkOperation];
}
#pragma mark * Core transfer code
// This is the code that actually does the networking.
// Because buffer is declared as an array, you have to use a custom getter.
// A synthesised getter doesn't compile.
- (uint8_t *)buffer
{
return self->_buffer;
}
- (BOOL)isSending
{
return (self.networkStream != nil);
}
- (void)startSend:(NSString *)filePath
{
BOOL success;
NSURL * url;
NSLog(@"localfilepath..:%@",localFilePath);
assert(localFilePath != nil);
assert([[NSFileManager defaultManager] fileExistsAtPath:localFilePath]);
assert( [localFilePath.pathExtension isEqual:@"png"] || [localFilePath.pathExtension isEqual:@"jpg"] );
assert(self.networkStream == nil); // don't tap send twice in a row!
assert(self.fileStream == nil); // ditto
// First get and check the URL.
url = [[NetworkManager sharedInstance] smartURLForString:@"ftp://yourFTPLink/"];
success = (url != nil);
if (success) {
// Add the last part of the file name to the end of the URL to form the final
// URL that we're going to put to.
// url = CFBridgingRelease(
// CFURLCreateCopyAppendingPathComponent(NULL, (__bridge CFURLRef) url, (__bridge CFStringRef) @"minkle.png" , false)
// );
url = CFBridgingRelease(
CFURLCreateCopyAppendingPathComponent(NULL, ( CFURLRef) url, ( CFStringRef) imageString , false)
);
success = (url != nil);
}
// If the URL is bogus, let the user know. Otherwise kick off the connection.
if ( ! success) {
// self.statusLabel.text = @"Invalid URL";
}
else
{
// Open a stream for the file we're going to send. We do not open this stream;
// NSURLConnection will do it for us.
self.fileStream = [NSInputStream inputStreamWithFileAtPath:localFilePath];
assert(self.fileStream != nil);
[self.fileStream open];
// Open a CFFTPStream for the URL.
self.networkStream = CFBridgingRelease(
CFWriteStreamCreateWithFTPURL(NULL, ( CFURLRef) url)
);
assert(self.networkStream != nil);
// if ([self.usernameText.text length] != 0) {
success = [self.networkStream setProperty:@"yourUserName" forKey:(id)kCFStreamPropertyFTPUserName];
assert(success);
success = [self.networkStream setProperty:@"yourPassword" forKey:(id)kCFStreamPropertyFTPPassword];
assert(success);
//}
self.networkStream.delegate = self;
[self.networkStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[self.networkStream open];
// Tell the UI we're sending.
[self sendDidStart];
}
}
- (void)stopSendWithStatus:(NSString *)statusString
{
if (self.networkStream != nil) {
[self.networkStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
self.networkStream.delegate = nil;
[self.networkStream close];
self.networkStream = nil;
}
if (self.fileStream != nil) {
[self.fileStream close];
self.fileStream = nil;
}
[self sendDidStopWithStatus:statusString];
}
- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode
// An NSStream delegate callback that's called when events happen on our
// network stream.
{
#pragma unused(aStream)
assert(aStream == self.networkStream);
switch (eventCode) {
case NSStreamEventOpenCompleted: {
[self updateStatus:@"Opened connection"];
} break;
case NSStreamEventHasBytesAvailable: {
assert(NO); // should never happen for the output stream
} break;
case NSStreamEventHasSpaceAvailable: {
[self updateStatus:@"Sending"];
// If we don't have any data buffered, go read the next chunk of data.
if (self.bufferOffset == self.bufferLimit) {
NSInteger bytesRead;
bytesRead = [self.fileStream read:self.buffer maxLength:jSendBufferSize];
if (bytesRead == -1) {
[self stopSendWithStatus:@"File read error"];
} else if (bytesRead == 0) {
[self stopSendWithStatus:nil];
} else {
self.bufferOffset = 0;
self.bufferLimit = bytesRead;
}
}
// If we're not out of data completely, send the next chunk.
if (self.bufferOffset != self.bufferLimit) {
NSInteger bytesWritten;
bytesWritten = [self.networkStream write:&self.buffer[self.bufferOffset] maxLength:self.bufferLimit - self.bufferOffset];
assert(bytesWritten != 0);
if (bytesWritten == -1) {
[self stopSendWithStatus:@"Network write error"];
} else {
self.bufferOffset += bytesWritten;
}
}
} break;
case NSStreamEventErrorOccurred: {
[self stopSendWithStatus:@"Stream open error"];
} break;
case NSStreamEventEndEncountered: {
// ignore
} break;
default: {
assert(NO);
} break;
}
}
答案 1 :(得分：0)
你转过这个字符串了吗？
/Users/JBG/Library/Application Support/iPhone Simulator/6.0/Applications/734F4DC6-8683-42BB-AB0D-A5553BC22C55/Documents/100046-003.jpg
到文件网址？
你应该使用[NSURL]中的fileURLWithPath:之类的内容（https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSURL_Class/Reference/Reference .html] docs将字符串路径转换为正确的URL。