[iOS 多线程 & 网络 - 2.11] - ASI框架上传文件

A.ASI的上传功能基本使用

1.实现步骤

（1）创建请求

使用ASIFormDataRequest

（2）设置上传文件路径

（3）发送请求

2.上传相册相片

UIImagePickerController用来选择图片

设置图片来源，可以选择相册

使用代理 UIImagePickerControllerDelegate方法，选择完成之后取得相片

 //
 //  ViewController.m
 //  ASIUploadDemo
 //
 //  Created by hellovoidworld on 15/1/28.
 //  Copyright (c) 2015年 hellovoidworld. All rights reserved.
 //

 #import "ViewController.h"
 #import "ASIFormDataRequest.h"

 @interface ViewController () <ASIProgressDelegate, UINavigationControllerDelegate,UIImagePickerControllerDelegate>

 @property (weak, nonatomic) IBOutlet UIProgressView *progressView;

 @property(nonatomic, strong) ASIFormDataRequest *request;

 - (IBAction)startUploading;

 @end

 @implementation ViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view, typically from a nib.

     // 显示网络请求状态
     [ASIHTTPRequest setShouldThrottleBandwidthForWWAN:YES];
 }

 /** 回收 */
 - (void)dealloc {
     [self.request clearDelegatesAndCancel];

 //    self.request = nil;
 }

 #pragma mark - 上传方法
 - (IBAction)startUploading {
 //    [self upload];
 //    [self upload2];

     [self uploadImageFromAlbum];
 }

 #pragma mark - 上传文件

 /** 上传方法1 */
 - (void) upload {
     // 1.创建请求
     NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
     self.request = [ASIFormDataRequest requestWithURL:url];

     // 2.设置上传文件
     NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bird.jpg" ofType:nil];
     [self.request setFile:filePath forKey:@"uploadedFile"];

     // 3.设置其他参数
     [self.request setPostValue:@"tom" forKey:@"user"];

     // 进度条
     self.request.uploadProgressDelegate = self.progressView;

     // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
     self.request.shouldContinueWhenAppEntersBackground = YES;

     // 4.发送请求
     [self.request startAsynchronous];

     // 5.监听请求
     self.request.completionBlock = ^{
         NSLog(@"上传完成!");
     };
 }

 /** 上传方法2，从新设置上传文件名和类型 */
 - (void) upload2 {
     // 1.创建请求
     NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
     self.request = [ASIFormDataRequest requestWithURL:url];

     // 2.设置上传文件
     NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bird.jpg" ofType:nil];
     // 从新设置上传文件名和类型
     [self.request setFile:filePath withFileName:@"my_file.jpg" andContentType:@"image/jpg" forKey:@"uploadedFile"];

     // 3.设置其他参数
     [self.request setPostValue:@"tom" forKey:@"user"];

     // 进度条
     self.request.uploadProgressDelegate = self.progressView;

     // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
     self.request.shouldContinueWhenAppEntersBackground = YES;

     // 4.发送请求
     [self.request startAsynchronous];

     // 5.监听请求
     self.request.completionBlock = ^{
         NSLog(@"上传完成!");
     };
 }

 #pragma mark - 从相册/相机选择照片上传
 - (void) uploadImageFromAlbum {
     // 创建一个相片选择控制器
     UIImagePickerController *imagePC = [[UIImagePickerController alloc] init];

     // 设置来源
 //    [imagePC setSourceType:UIImagePickerControllerSourceTypeCamera]; // 相机
     [imagePC setSourceType:UIImagePickerControllerSourceTypePhotoLibrary]; // 相簿

     // 设置代理
     imagePC.delegate = self;

     // 弹出相片控制器
     [self presentViewController:imagePC animated:YES completion:^{
         NSLog(@"开始选择相片");
     }];
 }

 - (void) uploadImage:(UIImage *) image {
     // 1.创建请求
     NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/upload"];
     self.request = [ASIFormDataRequest requestWithURL:url];

     // 2.将上传图片转换成二进制数据
     NSData *imageData = UIImagePNGRepresentation(image);

     // 从新设置上传文件名和类型
     [self.request setData:imageData withFileName:@"my_photo.png" andContentType:@"iamge/png" forKey:@"uploadedFile"];

     // 3.设置其他参数
     [self.request setPostValue:@"tom" forKey:@"user"];

     // 进度条
     self.request.uploadProgressDelegate = self.progressView;

     // 程序进入后台，仍然继续发送请求，适合发送大文件时使用
     self.request.shouldContinueWhenAppEntersBackground = YES;

     // 4.发送请求
     [self.request startAsynchronous];

     // 5.监听请求
     self.request.completionBlock = ^{
         NSLog(@"上传完成!");
     };
 }

 #pragma mark - UIImagePickerControllerDelegate
 /** 完成选择照片代理方法 */
 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

     // 退出相片选择控制器
     [picker dismissViewControllerAnimated:YES completion:^{
         NSLog(@"已经选择相片，准备上传");
     }];

     // 得到上传图片
     UIImage *image = info[UIImagePickerControllerOriginalImage];

     // 上传图片
     [self uploadImage:image];
 }

 @end