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:@"%@
",MPboundary];
//添加字段名称，换2行
[body appendFormat:@"Content-Disposition: form-data; name="%@"
",key];
//添加字段的值
[body appendFormat:@"%@
",[postParems objectForKey:key]];
NSLog(@"添加字段的值==%@",[postParems objectForKey:key]);
}
if(picFilePath){
////添加分界线，换行
[body appendFormat:@"%@
",MPboundary];
//声明pic字段，文件名为boris.png
[body appendFormat:@"Content-Disposition: form-data; name="%@"; filename="%@"
",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
"];
}
//声明结束符：--AaB03x--
NSString *end=[[NSString alloc]initWithFormat:@"
%@",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