IOS上传图片方法类
iPhone开发中遇到上传图片问题，找到多资料，最终封装了一个类，请大家指点，代码如下
// // RequestPostUploadHelper.h // demodes // // Created by 张浩 on 13-5-8. // Copyright (c) 2013年 张浩. All rights reserved. // #import <Foundation/Foundation.h> @interface RequestPostUploadHelper : NSObject /** *POST 提交 并可以上传图片目前只支持单张 */ + (NSString *)postRequestWithURL: (NSString *)url // IN postParems: (NSMutableDictionary *)postParems // IN 提交参数据集合 picFilePath: (NSString *)picFilePath // IN 上传图片路径 picFileName: (NSString *)picFileName; // IN 上传图片名称 /** * 修发图片大小 */ + (UIImage *) imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize) newSize; /** * 保存图片 */ + (NSString *)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName; /** * 生成GUID */ + (NSString *)generateUuidString; @end
// // RequestPostUploadHelper.m // demodes // // Created by 张浩 on 13-5-8. // Copyright (c) 2013年 张浩. All rights reserved. // #import "RequestPostUploadHelper.h" @implementation RequestPostUploadHelper static NSString * const FORM_FLE_INPUT = @"file"; + (NSString *)postRequestWithURL: (NSString *)url // IN postParems: (NSMutableDictionary *)postParems // IN picFilePath: (NSString *)picFilePath // IN picFileName: (NSString *)picFileName; // IN { NSString *TWITTERFON_FORM_BOUNDARY = @"0xKhTmLbOuNdArY"; //根据url初始化request NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10]; //分界线 --AaB03x NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY]; //结束符 AaB03x-- NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary]; //得到图片的data NSData* data; if(picFilePath){ UIImage *image=[UIImage imageWithContentsOfFile:picFilePath]; //判断图片是不是png格式的文件 if (UIImagePNGRepresentation(image)) { //返回为png图像。 data = UIImagePNGRepresentation(image); }else { //返回为JPEG图像。 data = UIImageJPEGRepresentation(image, 1.0); } } //http body的字符串 NSMutableString *body=[[NSMutableString alloc]init]; //参数的集合的所有key的集合 NSArray *keys= [postParems allKeys]; //遍历keys for(int i=0;i<[keys count];i++) { //得到当前key NSString *key=[keys objectAtIndex:i]; //添加分界线，换行 [body appendFormat:@"%@\r\n",MPboundary]; //添加字段名称，换2行 [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key]; //添加字段的值 [body appendFormat:@"%@\r\n",[postParems objectForKey:key]]; NSLog(@"添加字段的值==%@",[postParems objectForKey:key]); } if(picFilePath){ ////添加分界线，换行 [body appendFormat:@"%@\r\n",MPboundary]; //声明pic字段，文件名为boris.png [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n",FORM_FLE_INPUT,picFileName]; //声明上传文件的格式 [body appendFormat:@"Content-Type: image/jpge,image/gif, image/jpeg, image/pjpeg, image/pjpeg\r\n\r\n"]; } //声明结束符：--AaB03x-- NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary]; //声明myRequestData，用来放入http body NSMutableData *myRequestData=[NSMutableData data]; //将body字符串转化为UTF8格式的二进制 [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]]; if(picFilePath){ //将image的data加入 [myRequestData appendData:data]; } //加入结束符--AaB03x-- [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]]; //设置HTTPHeader中Content-Type的值 NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY]; //设置HTTPHeader [request setValue:content forHTTPHeaderField:@"Content-Type"]; //设置Content-Length [request setValue:[NSString stringWithFormat:@"%d", [myRequestData length]] forHTTPHeaderField:@"Content-Length"]; //设置http body [request setHTTPBody:myRequestData]; //http method [request setHTTPMethod:@"POST"]; NSHTTPURLResponse *urlResponese = nil; NSError *error = [[NSError alloc]init]; NSData* resultData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponese error:&error]; NSString* result= [[NSString alloc] initWithData:resultData encoding:NSUTF8StringEncoding]; if([urlResponese statusCode] >=200&&[urlResponese statusCode]<300){ NSLog(@"返回结果=====%@",result); return result; } return nil; } /** * 修发图片大小 */ + (UIImage *) imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize) newSize{ newSize.height=image.size.height*(newSize.width/image.size.width); UIGraphicsBeginImageContext(newSize); [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; UIImage *newImage=UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } /** * 保存图片 */ + (NSString *)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName{ NSData* imageData; //判断图片是不是png格式的文件 if (UIImagePNGRepresentation(tempImage)) { //返回为png图像。 imageData = UIImagePNGRepresentation(tempImage); }else { //返回为JPEG图像。 imageData = UIImageJPEGRepresentation(tempImage, 1.0); } NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES); NSString* documentsDirectory = [paths objectAtIndex:0]; NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName]; NSArray *nameAry=[fullPathToFile componentsSeparatedByString:@"/"]; NSLog(@"===fullPathToFile===%@",fullPathToFile); NSLog(@"===FileName===%@",[nameAry objectAtIndex:[nameAry count]-1]); [imageData writeToFile:fullPathToFile atomically:NO]; return fullPathToFile; } /** * 生成GUID */ + (NSString *)generateUuidString{ // create a new UUID which you own CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault); // create a new CFStringRef (toll-free bridged to NSString) // that you own NSString *uuidString = (NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuid); // transfer ownership of the string // to the autorelease pool [uuidString autorelease]; // release the UUID CFRelease(uuid); return uuidString; } @end
DEMO
// // UploadViewController.h // demodes // // Created by 张浩 on 13-5-6. // Copyright (c) 2013年 张浩. All rights reserved. // #import <UIKit/UIKit.h> @interface UploadViewController : UIViewController<UIActionSheetDelegate,UIImagePickerControllerDelegate> - (IBAction)onClickUploadPic:(id)sender; - (void) snapImage;//拍照 - (void) pickImage;//从相册里找 - (UIImage *) imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize) newSize; - (void)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName; - (IBAction)onPostData:(id)sender; - (NSString *)generateUuidString; @end
// // UploadViewController.m // demodes // // Created by 张浩 on 13-5-6. // Copyright (c) 2013年 张浩. All rights reserved. // #import "UploadViewController.h" #import "RequestPostUploadHelper.h" @interface UploadViewController () @end NSString *TMP_UPLOAD_IMG_PATH=@""; @implementation UploadViewController - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (IBAction)onClickUploadPic:(id)sender { UIActionSheet *menu=[[UIActionSheet alloc] initWithTitle:@"上传图片" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照上传",@"从相册上传", nil]; menu.actionSheetStyle=UIActionSheetStyleBlackTranslucent; [menu showInView:self.view]; } - (void) actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{ NSLog(@"33333333333333"); if(buttonIndex==0){ [self snapImage]; NSLog(@"111111111111"); }else if(buttonIndex==1){ [self pickImage]; NSLog(@"222222222222"); } [actionSheet release]; } //拍照 - (void) snapImage{ UIImagePickerController *ipc=[[UIImagePickerController alloc] init]; ipc.sourceType=UIImagePickerControllerSourceTypeCamera; ipc.delegate=self; ipc.allowsEditing=NO; [self presentModalViewController:ipc animated:YES]; } //从相册里找 - (void) pickImage{ UIImagePickerController *ipc=[[UIImagePickerController alloc] init]; ipc.sourceType=UIImagePickerControllerSourceTypePhotoLibrary; ipc.delegate=self; ipc.allowsEditing=NO; [self presentModalViewController:ipc animated:YES]; } -(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *) info{ UIImage *img=[info objectForKey:@"UIImagePickerControllerOriginalImage"]; if(picker.sourceType==UIImagePickerControllerSourceTypeCamera){ // UIImageWriteToSavedPhotosAlbum(img,nil,nil,nil); } UIImage *newImg=[self imageWithImageSimple:img scaledToSize:CGSizeMake(300, 300)]; [self saveImage:newImg WithName:[NSString stringWithFormat:@"%@%@",[self generateUuidString],@".jpg"]]; [self dismissModalViewControllerAnimated:YES]; [picker release]; } -(UIImage *) imageWithImageSimple:(UIImage*) image scaledToSize:(CGSize) newSize{ newSize.height=image.size.height*(newSize.width/image.size.width); UIGraphicsBeginImageContext(newSize); [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; UIImage *newImage=UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } - (void)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName { NSLog(@"===TMP_UPLOAD_IMG_PATH===%@",TMP_UPLOAD_IMG_PATH); NSData* imageData = UIImagePNGRepresentation(tempImage); NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES); NSString* documentsDirectory = [paths objectAtIndex:0]; // Now we get the full path to the file NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName]; // and then we write it out TMP_UPLOAD_IMG_PATH=fullPathToFile; NSArray *nameAry=[TMP_UPLOAD_IMG_PATH componentsSeparatedByString:@"/"]; NSLog(@"===new fullPathToFile===%@",fullPathToFile); NSLog(@"===new FileName===%@",[nameAry objectAtIndex:[nameAry count]-1]); [imageData writeToFile:fullPathToFile atomically:NO]; } - (IBAction)onPostData:(id)sender { NSMutableDictionary * dir=[NSMutableDictionary dictionaryWithCapacity:7]; //[dir setValue:@"save" forKey:@"m"]; [dir setValue:@"IOS上传试试" forKey:@"title"]; [dir setValue:@"IOS上传试试" forKey:@"content"]; [dir setValue:@"28" forKey:@"clubUserId"]; [dir setValue:@"1" forKey:@"clubSectionId"]; [dir setValue:@"192.168.0.26" forKey:@"ip"]; [dir setValue:@"asfdfasdfasdfasdfasdfasd=" forKey:@"sid"]; NSString *url=@"http://192.168.0.26:8090/api/club/topicadd.do?m=save"; NSLog(@"=======上传"); if([TMP_UPLOAD_IMG_PATH isEqualToString:@""]){ [RequestPostUploadHelper postRequestWithURL:url postParems:dir picFilePath:nil picFileName:nil]; }else{ NSLog(@"有图标上传"); NSArray *nameAry=[TMP_UPLOAD_IMG_PATH componentsSeparatedByString:@"/"]; [RequestPostUploadHelper postRequestWithURL:url postParems:dir picFilePath:TMP_UPLOAD_IMG_PATH picFileName:[nameAry objectAtIndex:[nameAry count]-1]];; } } - (NSString *)generateUuidString { // create a new UUID which you own CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault); // create a new CFStringRef (toll-free bridged to NSString) // that you own NSString *uuidString = (NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuid); // transfer ownership of the string // to the autorelease pool [uuidString autorelease]; // release the UUID CFRelease(uuid); return uuidString; } @end
