封装网络请求,下载,上传功能

对于网络数据请求每个人都能想出很多自己的方法,使用第三方,自己封装苹果自带的,不管哪家的,自己学会就是自己的拉 废话少说 上码

////  ConnectionUtil.h//  BlocksConnectionDemo////  Created by junxinWang on 15-5-29.//  Copyright (c) 2015年 junxinWang. All rights reserved.//#import <Foundation/Foundation.h>typedef enum requestMethod {    RequestMethodGet,    RequestMethodPost}RequestMethod;typedef enum downloadType {    downloadImage,    downloadMove}DownLoadType;typedef enum uploadType {    uploadImage,    uploadMove}UpLoadType;typedef void (^POSTRequest) (id objc);typedef void (^DownLoad) (id objc);typedef void (^UpLoad) (id objc);typedef void (^Progress) (float progress);typedef void (^Error) (NSError *error);@interface ConnectionUtil : NSObject+ (ConnectionUtil *)sharconn;@property (nonatomic, strong) NSData *data;@property (nonatomic, strong) NSDictionary *paramDIc;@property (nonatomic) RequestMethod requestMethod;//请求方式@property (nonatomic) DownLoadType downloadtype;//下载的类型@property (nonatomic) UpLoadType uploadtype;//上传类型@property (nonatomic, copy) POSTRequest postConn;@property (nonatomic, copy) DownLoad download;@property (nonatomic, copy) UpLoad   upload;@property (nonatomic, copy) Progress postPro;@property (nonatomic, copy) Error error;+ (void)connection:(POSTRequest)postConn postConnError:(Error)error;+ (void)connectionDown:(DownLoad)download downError:(Error)error;+ (void)connectionUpload:(UpLoad)upload uploaError:(Error)error;+ (void)downloadProgress:(Progress)postPro error:(Error)error;- (void)startConn:(NSString *)url requestMedth:(RequestMethod)type param:(NSDictionary *)param;- (void)downLoadConn:(NSString *)url;- (void)uploadConn:(NSString *)url uploadtype:(UpLoadType)uploadtype  param:(NSDictionary *)param;- (void)stopConn;@end

////  ConnectionUtil.m//  BlocksConnectionDemo////  Created by junxinWang on 15-5-29.//  Copyright (c) 2015年 junxinWang. All rights reserved.//#import "ConnectionUtil.h"#import <UIKit/UIKit.h>@interface ConnectionUtil ()<NSURLConnectionDelegate,NSURLConnectionDataDelegate,NSURLSessionDownloadDelegate>@property (nonatomic, retain)  NSURLConnection *connection;//连接对象@property (nonatomic, strong) NSURLSession *urlsession;//普通回话@property (nonatomic, strong) NSURLSession *backgroundSession;//后台回话@property (nonatomic, strong) NSURLSessionDownloadTask *sessionDownloadTask;//下载队列@property (nonatomic,strong)NSURLSessionDownloadTask *backgroundTask;//后台下载队列@property (nonatomic, strong) NSData *partiaData;//下载局部数据@property (nonatomic, strong) NSOutputStream *outputStream;@property (nonatomic, copy) NSString *urlpath;@end@implementation ConnectionUtilstatic ConnectionUtil *connhelp = nil;+ (ConnectionUtil *)sharconn {    static dispatch_once_t oneTonke;    dispatch_once(&oneTonke, ^{        connhelp = [[self alloc] init];    });    return connhelp;}- (void)startConn:(NSString *)url requestMedth:(RequestMethod)type param:(NSDictionary *)param{    self.paramDIc = param;    NSURL *urlconn = [NSURL URLWithString:[self getStringWithUrl:url]];    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:urlconn];       if (RequestMethodPost == type) {        [request setHTTPBody:[self postBody]];        [request setHTTPMethod:@"POST"];    }     self.connection = [NSURLConnection connectionWithRequest:request delegate:self];   // [conn start];    }- (void)stopConn {    [self.connection cancel];}- (NSString *)getStringWithUrl:(NSString *)str {    switch (self.requestMethod) {        case RequestMethodPost:           return [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];            break;            case RequestMethodGet:            return str;        default:            break;    }}//获取post请求 请求体- (NSData *)postBody {    return [[self appedData] dataUsingEncoding:NSUTF8StringEncoding];}//将字典中的参数拼接成字符串- (NSString *)appedData {    NSMutableString *urlstr = [NSMutableString stringWithCapacity:1];    for (NSString *key in self.paramDIc) {        NSString *value = self.paramDIc[key];        [urlstr appendFormat:@"&%@=%@",key,value];    }    //剔除第一个&符    [urlstr deleteCharactersInRange:NSMakeRange(0, 1)];    return urlstr;}- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {    NSLog(@"链接服务器...");}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {//    NSString *String =[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    self.data = data;}- (void)connectionDidFinishLoading:(NSURLConnection *)connection {        if(self.postConn){        id obj = [NSJSONSerialization JSONObjectWithData:self.data options:NSJSONReadingMutableContainers error:nil];        self.postConn(obj);    }    }//请求数据失败触发 网络中断 服务器未开- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {    if (self.error) {        self.error(error);    }}+ (void)connection:(POSTRequest)postConn postConnError:(Error)error{    connhelp.postConn = postConn;    connhelp.error = error;}- (NSData *)data {    if(!_data){        self.data = [NSData data];    }    return _data;}- (NSDictionary *)paramDIc {    if (!_paramDIc) {        self.paramDIc = [NSDictionary dictionary];    }    return _paramDIc;}- (void)uploadConn:(NSString *)url uploadtype:(UpLoadType)uploadtype  param:(NSDictionary *)param; {     NSData *imageData = UIImageJPEGRepresentation([param valueForKey:@"image"], 0.6);          NSString *boundary = @"0xKhTmLbOuNdArY";     NSString *filename = [NSString stringWithFormat:@"9.jpg"];     NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];     NSURL *upurl = [NSURL URLWithString:url];    //2 Request -put 默认是get    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:upurl cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:5.0f];    request.HTTPMethod  = @"POST";    /**     *  设置网络请求验证方     */    //1授权字符串   // NSString *authStr = @"admin:123456";    //2Base64的编码 避免在网络上一明文传输    //iOS中,仅对nsdata的数据类型提供base64编码//    NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding];//    NSString *encodeStr = [authData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn];//    NSString *authValue = [NSString stringWithFormat:@"Basic %@",encodeStr];         //[request setValue:authValue forHTTPHeaderField:@"Content-Type"];    //3Session          // 4 Create object to put content into...      //拼接from表单 加载上传数据      NSMutableData *body = [NSMutableData data];     [request addValue:contentType forHTTPHeaderField:@"Content-Type"];          [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];     [body appendData:[[NSString stringWithString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@\"\r\n",filename]] dataUsingEncoding:NSUTF8StringEncoding]];     [body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];    // 定义上传图片的类型   //  [body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];          [body appendData:[NSData dataWithData:imageData]];    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];           //__block NSString *stringForText = @"Hola";             NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];    NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig delegate:self delegateQueue:[NSOperationQueue mainQueue]];    //4uploadTask         // NSData *imgeData = UIImageJPEGRepresentation([param valueForKey:@"image"], 0.75);                   //NSData *imgeData = [NSJSONSerialization dataWithJSONObject:[param valueForKey:@"upfile"] options:NSJSONWritingPrettyPrinted error:nil];     //应用block的请求方式     NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:body completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {                           //上传完成后 data参数转成string就是服务器返回的内容         NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];         if(self.upload){             if(error){                 self.error(error);             }else{                 self.upload(str);}         }        // NSLog(@"ok%@",str);    }];     //开始上传     [uploadTask resume];}+ (void)connectionUpload:(UpLoad)upload uploaError:(Error)error {    connhelp.upload = upload;    connhelp.error = error;}#pragma mark - 如果我们需要利用NSURLSession进行数据传输我们需要：/** *  创建一个NSURLSessionConfiguration，用于创建NSSession时设置工作模式(3种)  *  (1)一般模式（default）：工作模式类似于原来的NSURLConnection，可以使用缓存的Cache，Cookie，鉴权。  *  (2)及时模式（ephemeral）：不使用缓存的Cache，Cookie，鉴权。  *  (3)后台模式（background）：在后台完成上传下载，创建Configuration对象的时候需要给一个NSString的ID用于追踪完成工作的Session是哪一个  */- (void)downLoadConn:(NSString *)url  {        NSURLSessionConfiguration *sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];        //    NSURLCache *myCache = [[NSURLCache alloc] initWithMemoryCapacity: 16384 diskCapacity: 268435456 diskPath: fileName];        /**          *  @网络设置：参考NSURLConnection中的设置项         *  两种创建方法(目前不太懂什么区别)          *  (1)就是根据刚才创建的Configuration创建一个Session，系统默认创建一个新的OperationQueue处理Session的消息          *  (2)可以设定回调的delegate（注意这个回调delegate会被强引用），并且可以设定delegate在哪个OperationQueue回调，如果我们将其          *     设置为[NSOperationQueue mainQueue]就能在主线程进行回调非常的方便          */        //NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig];    //sessionConfiguration.URLCache = myCache;   // sessionConfiguration.requestCachePolicy = NSURLRequestUseProtocolCachePolicy;    self.urlsession = [NSURLSession sessionWithConfiguration:sessionConfiguration delegate:self delegateQueue:[NSOperationQueue mainQueue]];    //NSString *str =[url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    NSURL *urlconn = [NSURL URLWithString:url];    NSURLRequest *request = [NSURLRequest requestWithURL:urlconn];        /**          *  NSURLSessionUploadTask：上传用的Task，传完以后不会再下载返回结果；         *  NSURLSessionDownloadTask：下载用的Task；          *  NSURLSessionDataTask：可以上传内容，上传完成后再进行下载。          */    self.sessionDownloadTask = [self.urlsession downloadTaskWithRequest:request];        [_sessionDownloadTask resume];    }- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTaskdidFinishDownloadingToURL:(NSURL *)location {    //下载成功后，文件是保存在一个临时目录的，需要开发者自己考到放置该文件的目录    NSURL *destination = [self createDirectoryForDownloadItemFromURL:location];    BOOL success = [self copyTempFileAtURL:location toDestination:destination];        if (success) {    if (self.download) {        if (downloadTask.error) {            self.error(downloadTask.error);        }else {                self.download(downloadTask);            }                    }    }else {        NSLog(@"文件保存错误");    }    self.sessionDownloadTask = nil;}- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask      didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWrittentotalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite {        if (self.postPro) {        if (downloadTask.error) {            self.error(downloadTask.error);        }else{            CGFloat progress = ((float)totalBytesWritten) / totalBytesExpectedToWrite;            self.postPro(progress);        }    }}- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didResumeAtOffset:(int64_t)fileOffsetexpectedTotalBytes:(int64_t)expectedTotalBytes{}+ (void)downloadProgress:(Progress)postPro error:(Error)error {    connhelp.postPro = postPro;    connhelp.error = error;}+ (void)connectionDown:(DownLoad)download downError:(Error)error {    connhelp.download = download;    connhelp.error = error;}//创建文件本地保存目录-(NSURL *)createDirectoryForDownloadItemFromURL:(NSURL *)location{    NSString *newpath;    NSFileManager *fileManager = [NSFileManager defaultManager];    NSArray *urls = [fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask];    NSURL *documentsDirectory = urls[0];        NSString *tmpstr = [location absoluteString];    if (self.downloadtype == downloadImage) {         newpath = [tmpstr stringByReplacingCharactersInRange:NSMakeRange(tmpstr.length-4, 4) withString:@".jpg"];    }else if(self.downloadtype == downloadMove){        newpath = [tmpstr stringByReplacingCharactersInRange:NSMakeRange(tmpstr.length-4, 4) withString:@".mp4"];    }            NSLog(@"%@",newpath);    NSURL *url2 = [NSURL URLWithString:newpath];    return  [documentsDirectory URLByAppendingPathComponent:[url2 lastPathComponent]];}//把文件拷贝到指定路径-(BOOL) copyTempFileAtURL:(NSURL *)location toDestination:(NSURL *)destination  {    NSError *error;    NSFileManager *filemanager = [NSFileManager defaultManager];    [filemanager removeItemAtURL:destination error:nil];               // NSURL *url =[NSURL URLWithString:tmpstr];    [filemanager copyItemAtURL:location toURL:destination error:nil];    if (error == nil) {        NSLog(@"转移成功");        return true;    }else {        NSLog(@"%@",error);        return false;    }}- (NSString *)getCachesImagePath {        //获取caches文件夹路径    NSString *filepath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)firstObject];    //获取MP3文件夹的路径    NSString *newpath = [filepath stringByAppendingPathComponent:@"Images"];    //3判断文件夹是否存在    NSFileManager *manager = [NSFileManager defaultManager];    if (![manager fileExistsAtPath:@"newpath"]) {        //没有的话创建文件夹        BOOL isSuccess =  [manager createDirectoryAtPath:newpath withIntermediateDirectories:YES attributes:nil error:nil];        if (isSuccess) {            // NSLog(@"images创建成功");        }else{            //  NSLog(@"images创建失败");        }    }    return newpath;}@end