The resource could not be loaded because the App Transport Security policy requires the use of a secure connection

xmpp 项目中遇到的问题，用苹果的通信API 写一个PUT 方法，向服务器上传一张图片。遇到如题问题。

Plist 文件没有NSAppTransportSecurity属性 Dic，添加该属性，再添加二级属性NSAllowsArbitraryLoads BOOL YES

苹果文档：https://developer.apple.com/library/ios/documentation/General/Reference/InfoPlistKeyReference/Articles/CocoaKeys.html

stackOverflow:http://stackoverflow.com/questions/32631184/the-resource-could-not-be-loaded-because-the-app-transport-security-policy-requi

工具类：HTTPTool.h

 1 #import <Foundation/Foundation.h>
 2 
 3 typedef void (^HttpToolProgressBlock)(CGFloat progress);
 4 typedef void (^HttpToolCompletionBlock)(NSError *error);
 5 
 6 
 7 
 8 @interface HttpTool : NSObject
 9 
10 -(void)uploadData:(NSData *)data
11               url:(NSURL *)url
12     progressBlock : (HttpToolProgressBlock)progressBlock
13             completion:(HttpToolCompletionBlock) completionBlock;
14 
15 /**
16  下载数据
17  */
18 -(void)downLoadFromURL:(NSURL *)url
19         progressBlock : (HttpToolProgressBlock)progressBlock
20             completion:(HttpToolCompletionBlock) completionBlock;
21 
22 
23 -(NSString *)fileSavePath:(NSString *)fileName;
24 
25 @end

HTTPTool.m

  1 #import "HttpTool.h"
  2 
  3 #define kTimeOut 5.0
  4 
  5 
  6 @interface HttpTool()<NSURLSessionDownloadDelegate,NSURLSessionTaskDelegate>{
  7 
  8     //下载
  9     HttpToolProgressBlock _dowloadProgressBlock;
 10     HttpToolCompletionBlock _downladCompletionBlock;
 11     NSURL *_downloadURL;
 12     
 13     
 14     //上传
 15     HttpToolProgressBlock _uploadProgressBlock;
 16     HttpToolCompletionBlock _uploadCompletionBlock;
 17 
 18 }
 19 
 20 @end
 21 
 22 
 23 @implementation HttpTool
 24 
 25 
 26 #pragma mark - 上传
 27 -(void)uploadData:(NSData *)data url:(NSURL *)url progressBlock:(HttpToolProgressBlock)progressBlock completion:(HttpToolCompletionBlock)completionBlock{
 28     
 29     NSAssert(data != nil, @"上传数据不能为空");
 30     NSAssert(url != nil, @"上传文件路径不能为空");
 31     
 32     _uploadProgressBlock = progressBlock;
 33     _uploadCompletionBlock = completionBlock;
 34     
 35     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:kTimeOut];
 36     request.HTTPMethod = @"PUT";
 37     
 38     NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
 39     
 40     //NSURLSessionDownloadDelegate
 41     NSURLSession *session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[[NSOperationQueue alloc] init]];
 42     
 43     
 44     //定义下载操作
 45     NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:data];
 46     
 47     [uploadTask resume];
 48 }
 49 
 50 #pragma mark - 上传代理
 51 
 52 
 53 #pragma mark - 上传进度
 54 -(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didSendBodyData:(int64_t)bytesSent totalBytesSent:(int64_t)totalBytesSent totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend{
 55 
 56     if (_uploadProgressBlock) {
 57         CGFloat progress = (CGFloat) totalBytesSent / totalBytesExpectedToSend;
 58         _uploadProgressBlock(progress);
 59     }
 60 }
 61 
 62 
 63 #pragma mark - 上传完成
 64 -(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error{
 65     if (_uploadCompletionBlock) {
 66         _uploadCompletionBlock(error);
 67         
 68         _uploadProgressBlock = nil;
 69         _uploadCompletionBlock = nil;
 70     }
 71 }
 72 
 73 
 74 #pragma mark - 下载
 75 -(void)downLoadFromURL:(NSURL *)url
 76          progressBlock:(HttpToolProgressBlock)progressBlock
 77             completion:(HttpToolCompletionBlock)completionBlock{
 78     
 79   
 80     
 81     NSAssert(url != nil, @"下载URL不能传空");
 82     
 83     _downloadURL = url;
 84     _dowloadProgressBlock = progressBlock;
 85     _downladCompletionBlock = completionBlock;
 86     
 87     
 88     
 89     NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:kTimeOut];
 90     
 91     
 92     //session 大多数使用单例即可
 93     
 94     NSURLResponse *response = nil;
 95     
 96     
 97     //发达同步请求
 98     [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
 99     
100     //NSLog(@"%lld",response.expectedContentLength);
101     if (response.expectedContentLength <= 0) {
102         if (_downladCompletionBlock) {
103             NSError *error =[NSError errorWithDomain:@"文件不存在" code:404 userInfo:nil];
104             _downladCompletionBlock(error);
105             
106             //清除block
107             _downladCompletionBlock = nil;
108             _dowloadProgressBlock = nil;
109         }
110         
111         return;
112     }
113     
114 
115     NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
116     
117     
118     //NSURLSessionDownloadDelegate
119     NSURLSession *session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[[NSOperationQueue alloc] init]];
120     
121     
122     //定义下载操作
123     NSURLSessionDownloadTask *downloadTask = [session downloadTaskWithRequest:request];
124     
125     [downloadTask resume];
126 
127 }
128 
129 
130 #pragma mark -NSURLSessionDownloadDelegate
131 #pragma mark 下载完成
132 -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location{
133 
134     //图片保存在沙盒的Doucument下
135     NSString *fileSavePath = [self fileSavePath:[_downloadURL lastPathComponent]];
136     
137     //文件管理
138     NSFileManager *fileManager = [NSFileManager defaultManager];
139     [fileManager copyItemAtURL:location toURL:[NSURL fileURLWithPath:fileSavePath] error:nil];
140     
141     if (_downladCompletionBlock) {
142         //通知下载成功，没有没有错误
143         _downladCompletionBlock(nil);
144         
145         //清空block
146         _downladCompletionBlock = nil;
147         _dowloadProgressBlock = nil;
148     }
149 
150 }
151 
152 #pragma mark 下载进度
153 -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite{
154     
155     
156     if (_dowloadProgressBlock) {
157         //已写数据字节数除以总字节数就是下载进度
158         CGFloat progress = (CGFloat)totalBytesWritten / totalBytesExpectedToWrite;
159         
160         _dowloadProgressBlock(progress);
161 
162     }
163 }
164 
165 
166 -(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didResumeAtOffset:(int64_t)fileOffset expectedTotalBytes:(int64_t)expectedTotalBytes{
167     
168 }
169 
170 
171 #pragma mark -传一个文件名，返回一个在沙盒Document下的文件路径
172 -(NSString *)fileSavePath:(NSString *)fileName{
173     NSString *document = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
174     //图片保存在沙盒的Doucument下
175     return [document stringByAppendingPathComponent:fileName];
176 }
177 
178 @end

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