NSURLConnection上传

//上传用post请求文件较大

//上传文件

- (void)upload {

//设置路径

NSURL*url = [NSURL URLWithString:@"http://localhost:8080/UpLoad/NewServlet"];

//请求对象

NSMutableURLRequest *postRequest = [NSMutableURLRequestrequestWithURL:url];

//请求方式

[postRequest setHTTPMethod:@"POST"];

//上传数据要用表单提交数据multipart/form-data:新的编码格式,可以提高数据长传的效率

[postRequest addValue:@"multipart/form-data" forHTTPHeaderField:@"Content-type"];

//上传工程文件

//NSString *filePath = [[NSBundle mainBundle] pathForResource:@"8" ofType:@"jpg"];

//上传本地文件

NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/yinyue.mp3"];

NSLog(@"---->%@",filePath);

if(![[NSFileManager defaultManager] fileExistsAtPath:filePath]) {

return;

}

//转化为二进制流

NSData *data = [NSData dataWithContentsOfFile:filePath];

[postRequest setHTTPBody:data];

[NSURLConnection sendAsynchronousRequest:postRequest queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *_Nullableresponse,NSData *_Nullabledata,NSErro r*_NullableconnectionError) {

NSLog(@"---data ---%@",data);

NSLog(@"----->%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);

[self.imageView performSelectorOnMainThread:@selector(setImage:) withObject:[UIImage imageWithContentsOfFile:filePath] waitUntilDone:NO];

}];

}

//UIImagePickerController上传图片

- (void)uploadAlbum {

//UIImagePickerController系统获取图片和视屏的接口

UIImagePickerController *picker = [[UIImagePickerController alloc] init];

//设置数据来源(三种:图库相册相机)

picker.sourceType=UIImagePickerControllerSourceTypeSavedPhotosAlbum;

//判断获取本机的数据来源

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {

NSLog(@"图库可用");

}

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

NSLog(@"相机可用");

}

if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]) {

NSLog(@"相册可用");

}

//设置允许编辑开可以在代理方法中对图片进行编辑

picker.allowsEditing=YES;

//连个代理协议

picker.delegate = self;

//模态显示

[self presentViewController:picker animated:YES completion:nil];

}

#pragma mark -- UIImagePickerControllerDelegate,UINavigationControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {//选照片时调用

//别名didFinishPickingMediaWithInfo

if(picker.allowsEditing) {

//UIImagePickerControllerEditedImage

//UIImagePickerControllerOriginalImage

//编辑图片裁剪后的图片

self.imageView.image= [info objectForKey:UIImagePickerControllerEditedImage];

}else{

//选择原始

self.imageView.image= [info objectForKey:UIImagePickerControllerOriginalImage];

}

//路径

NSURL*url = [NSURL URLWithString:@"http://localhost:8080/UpLoad/NewServlet"];

//对象

NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:url];

//方式

[postRequestset HTTPMethod:@"POST"];

//上传数据要用表单提交数据multipart/form-data:新的编码格式,可以提高数据长传的效率

[postRequest addValue:@"multipart/form-data" forHTTPHeaderField:@"Content-type"];

//压缩图片的图片的方法

//压缩性能较差较大

NSData *data =UIImagePNGRepresentation(self.imageView.image);

//压缩系数1 2可调,较小

NSData *data1 =UIImageJPEGRepresentation(self.imageView.image, 2);

#pragma unused (data1)

//设置对象请求体

[postRequest setHTTPBody:data];

//发送请求

[NSURLConnection sendAsynchronousRequest:postRequest queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *_Nullableresponse,NSData *_Nullabledata,NSError *_NullableconnectionError) {

NSLog(@"----->%@",[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);

}];

[self dismissViewControllerAnimated:YES completion:nil];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

//cancel按钮时调用

[self dismissViewControllerAnimated:YES completion:nil];

}