iOS将图像和数据发布到PHP mySQL数据库

Question

我试图将几张图片和文本数据一起发送到我的PHP页面，然后进入mySQL数据库，但我得到了400错误响应，我无法发布任何内容。

我可以只发布数据或只发布图片，但不能同时发布。
看来我没有正确设置POST。

我需要发布很多图片，但只是试图让一个滚动现在。

任何帮助将不胜感激！

NSData *imageData = UIImageJPEGRepresentation(_image1.image, 10); 
//Add boundary 
NSMutableString *boundary = [NSMutableString stringWithString:@"----Boundary+"]; 

//Append 5 random chars to the end of the boundary 
for(int i = 0; i < 5; i++){ 
    BOOL lowercase = arc4random() % 2; 

    if(lowercase){ 
     [boundary appendFormat:@"%c", (arc4random() % 26) + 97]; 
    } 
    else { 
     [boundary appendFormat:@"%c", (arc4random() % 26) + 65]; 
    } 

    //Commit to mySQL Database 
    NSString *post = [NSString stringWithFormat:@"title=%@&price=%@&description=%@&latitude=%@&longitude=%@&location=%@&category_id=%@",sellTitle, sellPrice, sellDescription, sellLatitude, sellLongitude, sellLocation, sellCategory]; 

    NSLog(@"PostData: %@",post); 

    NSURL *url=[NSURL URLWithString:@"http://myURL/testphp.php"]; 

    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding]; 
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]]; 

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:url]; 
    [request setHTTPMethod:@"POST"]; 
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; 
    [request setHTTPBody:postData]; 

    //PICTURE STUFF 
    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 stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"picture.png\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"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]]; 

    //Setting the body of the post to the request 
    [request setHTTPBody:body]; 

    NSError *error = [[NSError alloc] init]; 
    NSHTTPURLResponse *response = nil; 

    NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; 

    NSLog(@"Response code:%d", [response statusCode]); 

    if ([response statusCode] >=200 && [response statusCode] <300) { 
     NSString *responseData = [[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding]; 
     NSLog(@"Respinse ==> %@", responseData); 

     //Now lets make the connection to the web 
     NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
     NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

     NSLog(@"%@",returnString); 
     NSLog(@"%@",boundary); 
     NSLog(@"Title Saved: %@", sellTitle); 

Answer 1

这是我设法为此工作的代码。这是完美的。

//begin new method 

    NSString *urlString = @"http://www.yourURLforPostingData.com"; 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:urlString]]; 
    [request setHTTPMethod:@"POST"]; 

    NSMutableData *body = [NSMutableData data]; 

    NSString *boundary = @"---------------------------14737809831466499882746641449"; 
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; 
    [request addValue:contentType forHTTPHeaderField:@"Content-Type"]; 

    // picture 
    NSData *imageData = UIImageJPEGRepresentation(_image1.image, .25); 

    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"picture.png\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"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]]; 

    // Description Text 
    NSString *description = [defaults objectForKey:@"description"]; 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"description\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:description] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 

    // Title Text 
    NSString *title = [defaults objectForKey:@"sellTitle"]; 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"title\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:title] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 


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

    // set request body 
    [request setHTTPBody:body]; 

    //return and test 
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

    NSLog(@"%@", returnString); 


//END NEW METHOD