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- (void)pause{
[self.uploadTask cancel];
}
- (void)startUploadWithPath:(NSString *)path data:(NSData *)data fileName:(NSString *)fileName{
//1.创建会话对象,设置代理
NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[NSOperationQueue mainQueue]];
//2.创建请求对象
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:path.jq_URL];
//2.1 修改请求方法
request.HTTPMethod = @"POST";
//2.2 设置请求头
NSString *header = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",kBoundary];
[request setValue:header forHTTPHeaderField:@"Content-Type"];
//3.创建上传task
/*
第一个参数:请求对象
第二个参数:要上传文件的参数(二进制数据
第三个参数:completionHandler
data:服务器返回的结果(响应体信息)
response:响应头
*/
self.uploadTask = [session uploadTaskWithRequest:request fromData:[self getBodyDataWithImageData:data fileName:fileName] completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
//更新数据库
RLMRealm *realm = [RLMRealm defaultRealm];
[[RLMRealm defaultRealm] beginWriteTransaction];
[UPModel createOrUpdateInRealm:realm withValue:@{@"fileName": self.name, @"finish": @(YES), @"finishTime": [Tool getNowTime], }];
[[RLMRealm defaultRealm] commitWriteTransaction];
//结束定时器
[self.timer invalidate];
//5.解析结果
NSLog(@"%@",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);
//移除通知
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"pauseUpload" object:nil];
}];
//4.执行任务
[self.uploadTask resume];
}
#define kBoundary @"----WebKitFormBoundary0IQAt0HA7oxwIx3f"
#define KNewLine [@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]
-(NSData *)getBodyDataWithImageData:(NSData *)imageData fileName:(NSString *)fileName{
//5.拼接数据
NSMutableData *fileData = [NSMutableData data];
//5.1 拼接文件参数
/*
--分隔符
Content-Disposition: form-data; name="file"; filename="Snip20151228_572.png"
Content-Type: image/png
空行
文件二进制数据
*/
[fileData appendData:[[NSString stringWithFormat:@"--%@",kBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
// name="file":参数,是固定的
// filename:文件上传到服务器以什么名字来保存,随便
[fileData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"file\"; filename=\"%@\"", fileName] dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
//Content-Type:要上传的文件的类型 (MIMEType)
[fileData appendData: [@"Content-Type: image/png" dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
[fileData appendData:KNewLine];
[fileData appendData:imageData];
[fileData appendData:KNewLine];
//5.2 拼接非文件参数
/*
--分隔符
Content-Disposition: form-data; name="username"
空行
非文件参数的二进制数据
*/
[fileData appendData:[[NSString stringWithFormat:@"--%@",kBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
//username:同file 是服务器规定
[fileData appendData:[@"Content-Disposition: form-data; name=\"username\"" dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
[fileData appendData:KNewLine];
[fileData appendData:[@"dashen9" dataUsingEncoding:NSUTF8StringEncoding]];
[fileData appendData:KNewLine];
//5.3 拼接结尾标识
/*
--分隔符--
*/
[fileData appendData:[[NSString stringWithFormat:@"--%@--",kBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
return fileData;
}