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标题: php - 使用从 iOS 设备发送的 multipart/form-data 检索 HTTP POST 变量 [打印本页]

作者: 菜鸟教程小白    时间: 2022-12-12 10:28
标题: php - 使用从 iOS 设备发送的 multipart/form-data 检索 HTTP POST 变量

我需要检索从我的 iOS 应用程序发送的 POST 变量,但到目前为止我还没有运气。这是一些背景:

我有一个 iOS 应用程序,它将图像和一些变量一起发布到 php 页面,该页面只是将变量保存在文件中(用于调试)并将图像移动到当前目录(服务器端)。我可以使用 $_FILE 变量毫无问题地处理图像,但是我似乎根本无法获得任何 POST 参数。

一些一般信息和我尝试过的:

我正在使用修改后的示例代码 from here

// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod"OST"];

NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject"1.0" forKey"ver"];
[_params setObject"en" forKey"lan"];
[_params setObject:[NSString stringWithFormat"%@", @"myUserName"] forKey"userId"];

// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = @"V2ymHFg03ehbqgZCaKO6jy";

// string constant for the post parameter 'file'
NSString *FileParamConstant = @"media";

//Setup request URL
NSURL *requestURL = [[NSURL alloc] initWithString"http://myWebAddress/myAction.php"];

// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat"multipart/form-data; boundary=%@", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];

// post body
NSMutableData *body = [NSMutableData data];

// add params (all params are strings)
for (NSString *param in _params) {
    [body appendData:[[NSString stringWithFormat"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"%@\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}

// add image data
NSData *imageData = UIImageJPEGRepresentation([self.imageButtonOutlet backgroundImageForState:UIControlStateNormal], 1.0);
if (imageData) {
    printf("appending image data\n");
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\'%@\'; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:imageData];
    [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}

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

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

// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];

// set URL
[request setURL:requestURL];

NSURLConnection *postConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[postConnection start];
[postConnection release];

另外,这里是 myAction.php,就像现在一样:

<?php

$fp_file = fopen("./output_files.txt", "w");
$fp_post = fopen("./output_post.txt", "w");

$post_content = var_export($_POST , TRUE);
$file_content = var_export($_FILES, TRUE);
fwrite($fp_file, $file_content);
fwrite($fp_post, $post_content);


fclose($fp_file);
fclose($fp_post);

move_uploaded_file( $_FILES['media']['tmp_name'], "test.jpg");

?>



Best Answer-推荐答案


经过 4 小时的调试,问题出在我的 php 代码中……已被编辑以反射(reflect)更改。变量 $post_content 是用名称 $post_contnet 创建的。希望这至少可以作为其他尝试实现类似服务的代码指南。

你不能解决愚蠢的问题。

关于php - 使用从 iOS 设备发送的 multipart/form-data 检索 HTTP POST 变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15956805/






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