阿里云OSS 保存图片
# 阿里云
pod 'AliyunOSSiOS', '~> 2.6.0'
#import <AliyunOSSiOS/AliyunOSSiOS.h>
YTTool.h
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import "AliyunOSSiOS/OSSService.h"
typedef void(^ResultBlock)(BOOL isOK,NSString *url);
typedef void(^Progress)(float progress);
typedef void(^ResultBlockT)(BOOL isOK,NSArray<NSString *> *imgNameArr);
@interface YTTool : NSObject
/**
* 异步上传 单张图片
*
* @param image 要上传的图片
* @param progressBlock 上传图片进度
* @param resultBlock 上传图片结果
*/
+(void)uploadPhotoAsync:(UIImage *)image progress:(Progress)progressBlock resultBlock:(ResultBlock)resultBlock;
/**
* 同步上传 单张图片
*
* @param image 要上传的图片
*
* @return 上传成功后返回的Url
*/
+(NSString *)uploadPhotoSync:(UIImage *)image progress:(Progress)progressBlock;
/**
* 异步上传 多张图片
*
* @param imageArr 要上传的图片数组
* @param progressBlock 上传图片进度
* @param resultBlock 上传图片结果
* @param isAsync 是否异步
*/
+(void)uploadPhotos:(NSArray<UIImage *> *)imageArr progress:(Progress)progressBlock resultBlock:(ResultBlockT)resultBlock isAsync:(BOOL)isAsync;
@end
YTTool.m
#import "YTTool.h"
// AccessKey
NSString * const AccessKey = @"LTAIULEB2J0Otax0";
// SecretKey
NSString * const SecretKey = @"zXXeirYoRw1qdd4ZRLrhwkOCEriw0R";
// 与OSS文件夹名对应
NSString * const PUBLIC_BUCKET = @"kachamao";
//
NSString * const ENDPOINTIMAGE = @"http://oss-cn-shanghai.aliyuncs.com";
// 子文件夹
NSString * const OBJECT_KEY = @"CaChaCat_App_img";
//
NSString * const MultipartUploadObjectKey = @"multipartUploadObject";
//
CGFloat const kPix = 750;
// 修饰全局，作用域仅限于本类
static OSSClient * client;
@implementation YTTool
// 初始化OSS客户端
+ (void)initOSSClient{
// 1.本地自签名
id<OSSCredentialProvider> credential = [[OSSPlainTextAKSKPairCredentialProvider alloc] initWithPlainTextAccessKey:AccessKey secretKey:SecretKey];
// 2.OSSClient配置参数
OSSClientConfiguration *config = [OSSClientConfiguration new];
// 2.1.是否开启后台传输
config.enableBackgroundTransmitService = NO;
// 2.2.最大重试次数
config.maxRetryCount = 3;
// 2.3.请求超时时间
config.timeoutIntervalForRequest = 20;
// 2.4.单个object下载最长持续时间
config.timeoutIntervalForResource = 24 * 60 * 60;
// 3.初始OSS化客户端
client = [[OSSClient alloc]initWithEndpoint:ENDPOINTIMAGE credentialProvider:credential clientConfiguration:config];
}
// 异步上传 单张图片
+ (void)uploadPhotoAsync:(UIImage *)image progress:(Progress)progressBlock resultBlock:(ResultBlock)resultBlock{
OSSPutObjectRequest *put=[self getPutWithImage:image progress:progressBlock];
// 2.上传
OSSTask *putTast = [client putObject:put];
[putTast continueWithBlock:^id _Nullable(OSSTask * _Nonnull task) {
if (!task.error){ // 上传成功
NSLog(@"上传成功");
dispatch_async(dispatch_get_main_queue(), ^{
// 上传成功后的图片UrlStr
NSString *str=[[ENDPOINTIMAGE componentsSeparatedByString:@"//"] lastObject];
NSString *urlString=[NSString stringWithFormat:@"https://%@.%@/%@",PUBLIC_BUCKET,str,put.objectKey];
resultBlock(YES,urlString);
});
}else{ // 上传失败
NSLog(@"上传失败:%@",task.error);
dispatch_async(dispatch_get_main_queue(), ^{
resultBlock(NO,nil);
});
}
return nil;
}];
}
// 同步上传 单张图片
+ (NSString *)uploadPhotoSync:(UIImage *)image progress:(Progress)progressBlock{
OSSPutObjectRequest *put=[self getPutWithImage:image progress:progressBlock];
// 2.上传
OSSTask *putTast = [client putObject:put];
[[putTast continueWithBlock:^id _Nullable(OSSTask * _Nonnull task) {
if (!task.error){
NSLog(@"上传成功");
}else{
NSLog(@"上传失败:%@",task.error);
}
return nil;
}] waitUntilFinished];
// 上传成功后的图片UrlStr
NSString *str=[[ENDPOINTIMAGE componentsSeparatedByString:@"//"] lastObject];
NSString *urlString=[NSString stringWithFormat:@"https://%@.%@/%@",PUBLIC_BUCKET,str,put.objectKey];
return urlString;
}
//
+(OSSPutObjectRequest *)getPutWithImage:(UIImage *)image progress:(Progress)progressBlock{
// 0.初始化客户端
[self initOSSClient];
// 1.上传请求
OSSPutObjectRequest *put = [OSSPutObjectRequest new];
// 1.1.设置bucketName (文件夹名，与OSS对应)
put.bucketName = PUBLIC_BUCKET;
// 1.2.文件名+路径
NSTimeInterval timeInterval =[[NSDate date] timeIntervalSince1970];
NSString *objectName = [NSString stringWithFormat:@"%@/%@_img_%d.png",[self dirPath],[self timeStringWithDataTimeToDate:timeInterval],((arc4random()% 100000000) + 10000)];
put.objectKey = objectName;
// 1.3.上传对象(内存中)
put.uploadingData = [self imageCompressForSize:image targetPx:kPix];
// 1.4.上传进度
put.uploadProgress = ^(int64_t bytesSent, int64_t totalByteSent, int64_t totalBytesExpectedToSend) {
float progress = (float)totalByteSent/totalBytesExpectedToSend;
progressBlock(progress);
};
return put;
}
// 上传多张图片
+(void)uploadPhotos:(NSArray<UIImage *> *)imageArr progress:(Progress)progressBlock resultBlock:(ResultBlockT)resultBlock isAsync:(BOOL)isAsync{
// 0.初始化客户端
[self initOSSClient];
// 1.线程队列
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
// 1.1最大线程数
queue.maxConcurrentOperationCount = imageArr.count;
//
NSMutableArray *callBackNames = [NSMutableArray array];
int i = 0;
for (UIImage *image in imageArr){
if (image){
// 线程
NSBlockOperation *operation = [NSBlockOperation blockOperationWithBlock:^{
// 1.上传请求
OSSPutObjectRequest *put = [OSSPutObjectRequest new];
// 1.1.设置bucketName (文件夹名，与OSS对应)
put.bucketName = PUBLIC_BUCKET;
// 1.2.文件名+路径
NSTimeInterval timeInterval =[[NSDate date] timeIntervalSince1970];
NSString *objectName = [NSString stringWithFormat:@"%@/%@_img_%d.png",[self dirPath],[self timeStringWithDataTimeToDate:timeInterval],((arc4random()% 100000000) + 10000)];
put.objectKey = objectName;
// iconName
NSString *encodingString = [[NSString stringWithFormat:@"http://kachamao.oss-cn-shanghai.aliyuncs.com/%@",objectName]stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
[callBackNames addObject: encodingString];
// 1.3.上传对象(内存中)
put.uploadingData = [self imageCompressForSize:image targetPx:kPix];
//
OSSTask * putTask = [client putObject:put];
[putTask continueWithBlock:^id(OSSTask *task){
if (task.error){
OSSLogError(@"%@", task.error);
}
OSSPutObjectResult * result = task.result;
NSLog(@"Result - requestId: %@, headerFields: %@",
result.requestId,
result.httpResponseHeaderFields);
return nil;
}]; // 阻塞直到上传完成
if (isAsync) {
if (image == imageArr.lastObject) {
NSLog(@"upload object finished!");
if (resultBlock) {
resultBlock(true,callBackNames);
}
}
}
}];
if (queue.operations.count != 0) {
[operation addDependency:queue.operations.lastObject];
}
[queue addOperation:operation];
}
i++;
}
if (!isAsync) {
[queue waitUntilAllOperationsAreFinished];
if (resultBlock) {
if (resultBlock) {
resultBlock(true,[NSArray arrayWithArray:callBackNames]);
}
}
}
}
//
+ (NSString *)dirPath{
NSDateFormatter *formater = [NSDateFormatter new];
[formater setDateFormat:@"/yyyy/MM/yyyMMdd"];
NSString *str = [formater stringFromDate:[NSDate date]];
return [[OBJECT_KEY mutableCopy] stringByAppendingString:str];
}
/**
图片压缩的处理逻辑:
一 尺寸压缩(一般参照像素为1280)
a. 宽高均<=1280px时 图片尺寸保持不变
b. 宽高均>1280px时 图片宽高比<=2，则将图片宽或者高取大的等比压缩至1280px; 图片宽高比＞2时，则宽或者高取小的等比压缩至1280px;
c. 宽或高某一个>1280px，另一个<1280px时 图片宽高比＞2时，则宽高尺寸不变;图片宽高比≤2时,则将图片宽或者高取大的等比压缩至1280px.
二 质量压缩
一般压缩在90%
*/
#pragma mark -- 图片压缩方法
+ (NSData *)imageCompressForSize:(UIImage *)sourceImage targetPx:(NSInteger)targetPx{
//
BOOL drawImge = NO; // 是否需要重绘图片 默认是NO
CGFloat scaleFactor = 0.0; // 压缩比例
CGFloat scaledWidth = targetPx; // 压缩后的宽度 默认是参照像素1280px
CGFloat scaledHeight = targetPx; // 压缩后的高度 默认是参照像素1280px
// 压缩尺寸
// 新图片(尺寸压缩后的)
UIImage *newImage = nil;
// 原size
CGSize imageSize = sourceImage.size;
CGFloat width = imageSize.width;
CGFloat height = imageSize.height;
// 判断尺寸
if (width < targetPx && height < targetPx) { // a.宽高均<=参照像素时:尺寸不变
newImage = sourceImage;
}else if (width > targetPx && height > targetPx) { // b.宽或高均＞1280px时
drawImge = YES;
CGFloat factor = width / height;
if (factor <= 2) { // b.1图片宽高比≤2，则将图片宽或者高取大的等比压缩至1280px
if (width > height) {
scaleFactor = targetPx / width;
} else {
scaleFactor = targetPx / height;
}
} else { // b.2图片宽高比＞2时，则宽或者高取小的等比压缩至1280px
if (width > height) {
scaleFactor = targetPx / height;
} else {
scaleFactor = targetPx / width;
}
}
}else if (width > targetPx && height < targetPx ) { // c.宽高一个＞1280px，另一个＜1280px 宽大于1280
if (width / height > 2) {
newImage = sourceImage;
} else {
drawImge = YES;
scaleFactor = targetPx / width;
}
}else if (width < targetPx && height > targetPx) { // c.宽高一个＞1280px，另一个＜1280px 高大于1280
if (height / width > 2) {
newImage = sourceImage;
} else {
drawImge = YES;
scaleFactor = targetPx / height;
}
}
if (drawImge == YES) { // 图片需要重绘 按新宽高压缩重绘图片
scaledWidth = width * scaleFactor;
scaledHeight = height * scaleFactor;
UIGraphicsBeginImageContext(CGSizeMake(scaledWidth, scaledHeight));
[sourceImage drawInRect:CGRectMake(0, 0, scaledWidth,scaledHeight)];
newImage =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
if (newImage == nil) {
newImage = sourceImage;
}
// 质量压缩(图片>200kb 时)
NSData * scaledImageData = nil;
if (UIImageJPEGRepresentation(newImage, 1) == nil) {
scaledImageData = UIImagePNGRepresentation(newImage);
}else{
scaledImageData = UIImageJPEGRepresentation(newImage, 1);
if (scaledImageData.length >= 1024 * 200) {
scaledImageData = UIImageJPEGRepresentation(newImage, 0.5);
}
}
return scaledImageData;
}
// yyyy-MM-dd
+ (NSString *)timeStringWithDataTimeToDate:(NSTimeInterval)time{
//
NSDateFormatter *dateFormatter = nil;
if (dateFormatter == nil) {
dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"YYYY_MM_dd_hh_mm_ss"];
}
NSString *string = [dateFormatter stringFromDate:[NSDate dateWithTimeIntervalSince1970:(time)]];
return string;
}
@end
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