iOS图片上传

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- (IBAction )uploadButton:( id )sender {

UIImage *image = [ UIImage imageNamed : @"1.jpg" ]; // 图片名

NSData *imageData = UIImageJPEGRepresentation (image, 0.5 );//压缩比例

NSLog ( @" 字节数 :%i" ,[imageDatalength]);

// post url

NSString *urlString = @"http://192.168.1.113:8090/text/UploadServlet" ;

// 服务器地址

// setting up the request object now

NSMutableURLRequest *request = [[NSMutableURLRequest alloc ] init ] ;

[request setURL :[ NSURL URLWithString :urlString]];

[request setHTTPMethod : @"POST" ];

NSString *boundary = [NSString stringWithString :@"---------------------------14737809831466499882746641449" ];

NSString *contentType = [ NSString stringWithFormat : @"multipart/form-data;boundary=%@",boundary];

[request addValue :contentType forHTTPHeaderField : @"Content-Type" ];

NSMutableData *body = [NSMutableData data ];

[body appendData :[[NSString stringWithFormat : @"\r\n--%@\r\n" ,boundary]dataUsingEncoding : NSUTF8StringEncoding ]];

[body appendData :[[NSString stringWithString :@"Content-Disposition:form-data; name=\"userfile\"; filename=\"2.png\"\r\n" ] dataUsingEncoding :NSUTF8StringEncoding ]];// 上传上去的图片名字

[body appendData :[[NSString stringWithString : @"Content-Type: application/octet-stream\r\n\r\n" ] dataUsingEncoding : NSUTF8StringEncoding ]];

[body appendData :[ NSData dataWithData :imageData]];

[body appendData :[[NSString stringWithFormat : @"\r\n--%@--\r\n" ,boundary]dataUsingEncoding : NSUTF8StringEncoding ]];

[request setHTTPBody :body];

// NSLog(@"1-body:%@",body);

NSLog ( @"2-request:%@" ,request);

NSData *returnData = [ NSURLConnection sendSynchronousRequest :request returningResponse :nil error : nil ];

NSString *returnString = [[ NSString alloc ] initWithData :returnData encoding :NSUTF8StringEncoding ];

NSLog ( @"3- 测试输出： %@" ,returnString );

}

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