将多个镜像上传到服务器IOS
将多个镜像上传到服务器IOS
提问于 2015-06-12 13:47:03
我想知道如何使用objective C将多个图像上传到服务器。以下是我尝试使用的代码片段。
-(void)uploadImage:(NSMutableArray *)image andMessageBO:(MessageBO *)message
{
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@PostImageServlet?",kPostImageUploadWebServiceURL]];
NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:url];
[postRequest setHTTPMethod:@"POST"];
[postRequest setTimeoutInterval:60.0];
NSString *stringBoundary = @"0xKhTmLbOuNdArY";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];
[postRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSData *imageData =UIImagePNGRepresentation(image);
NSMutableData *postBody = [[NSMutableData alloc] init];
[postBody appendData:[[NSString stringWithFormat:@"isFormField=true"]dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"%@",@"Content-Disposition: form-data; name=\"userid\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"%d",messageBO.messageId] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"profilepic\"; filename=\"%d_postImage.png\"\r\n",messageBO.messageId] dataUsingEncoding:NSUTF8StringEncoding]];
for (int i = 0; i < [image count]; i++)
{
[postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"profilepic\"; filename=\"%d_postImage%d.png\"\r\n",messageBO.messageId,i] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[image objectAtIndex:i]];
}
[postBody appendData:[[NSString stringWithFormat:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[NSData dataWithData:imageData]];
[postBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postRequest setHTTPBody:postBody];
NSData *returnData = [NSURLConnection sendSynchronousRequest:postRequest returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
DebugLog(@"IMge:%@",returnString);
// [self removeOfflineImage:expenseBO];
}谢谢
回答 1
Stack Overflow用户
发布于 2015-06-12 14:38:48
我个人使用这种方法与员工交流，并将员工上传到服务器。这是一种json类型的方法：
- (NSURLRequest *)convertToRequest:(NSString *)stringURL withDictionary:(NSDictionary *)dictionary
{
NSError *error = nil;
NSData *JSONData = [NSJSONSerialization dataWithJSONObject:dictionary options:0 error:&error];
NSURL *url = [NSURL URLWithString:stringURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"POST"];
[request setHTTPBody: JSONData];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept-Encoding"];
[request setValue:[NSString stringWithFormat:@"%lu", (unsigned long)[JSONData length]] forHTTPHeaderField:@"Content-Length"];
return request;
}字典参数填充的内容如下所示：
首先将数据转换为base64String格式，如下所示：
NSData *data = UIImageJPEGRepresentation(self.userImageView.image, 1.0);
NSData *imageBase64Data = [data base64EncodedDataWithOptions:0];
NSString *imageBase64String = [[NSString alloc] initWithData:imageBase64Data encoding: NSUTF8StringEncoding];将此内容添加到字典...
NSDictionary *jsonDictionary = @{
@0 : @{
"name": "file1",
"image" : imageBase64String1
},
@1 : @{
"name": "file2",
"image" : imageBase64String2
} //and so on..
};
//you may want to put that in a loop
[ImplementationClass convertToRequest:YourServerURL withDictionary: jsonDictionary];在服务器端，类似于：
对发送到服务器的数据进行解码(PHP)：
// Retrieves data
$handle = fopen('php://input','r');
$jsonInput = fgets($handle);
$json_decoded = json_decode($jsonInput,true);
/*
* I commented this because i'm not sure if this suits my `NSDictionary` above
* but you can always check by logging `$json_decoded` or probably `var_dump()` function of php
*
* $json_decoded[0]['name'];
* $json_decoded[0]['image'];
* $json_decoded[1]['name'];
* $json_decoded[1]['image'];
*/
function upload_image($filename, $uploadedfile) {
$save_file_path = getcwd()."/uploads/";
$save_file_path .= $filename;
$image_file = base64_decode($uploadedfile);
//DELETES EXISTING
if (file_exists($save_file_path)) { unlink($save_file_path); }
//CREATE NEW FILE
file_put_contents($save_file_path, $image_file);
//CHECK FILE IF EXIST
return ((file_exists($save_file_path)) ? true : false );
}希望这对你有帮助..干杯..
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原文链接：
https://stackoverflow.com/questions/30796059
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