在ObjectiveC中將數據發送到服務器

Question

我目前正在嘗試將數據從我的xcode項目發送到我制作的服務器上，但是當我運行應用程序時，數據似乎沒有出現在表中。

這非常簡單，允許用戶輸入名稱和按下按鈕時發送的消息。 我不知道我做錯了什么，有什么建議嗎？

這是我的PHP代碼：

<?php

$username = "root";
$database = "testdb";

mysql_connect('localhost', $username);

@mysql_select_db($database) or die ("Unable to find database");

$name = @$_GET["name"];
$message = @$_GET["message"];

$query = "INSERT INTO test VALUES ('', '$name', '$message')";

mysql_query($query) or die (mysql_error("error"));

mysql_close();

?> 

和我的obj c代碼：

。H

#import <UIKit/UIKit.h>

#define kPostURL @"http://localhost/TESTCONNECT.php" //variable to use whenever
#define kName @"name"
#define kMessage @"message"



@interface FirstViewController : UIViewController{

IBOutlet UITextField *nameText;
IBOutlet UITextView *messageText;

NSURLConnection *postConnection;
}

-(IBAction)post:(id)sender;


@end

.m

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad {
[super viewDidLoad];

}




-(void) postMessage:(NSString*) message withName:(NSString *) name{

if(name !=nil && message !=nil){

    NSMutableString *postString = [NSMutableString stringWithString:kPostURL];
    [postString appendString:[NSString stringWithFormat:@"?%@=%@", kName, name]];

    [postString appendString: [NSString stringWithFormat:@"&%@=%@", kMessage, message]];

    [postString setString:[postString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    NSMutableURLRequest *request =[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString: postString]];


    [request setHTTPMethod:@"POST"];

    postConnection =[[NSURLConnection alloc]initWithRequest:request delegate:self startImmediately:YES];


}
}

-(IBAction)post:(id)sender{
[self postMessage:messageText.text withName:nameText.text];
[messageText resignFirstResponder];
messageText.text=nil;
nameText.text=nil;

}




- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];

}

@end

Answer 1

您正在用C語言編寫一個帖子，因此在PHP中，您需要使用$ _POST而不是$ _GET捕獲變量。

Answer 2

這是您實際將字符串發送到php（POST）文件的方式。 我認為其余的應該起作用。 我沒有嘗試過，但對我來說看起來不錯。

- (void) send {
    NSString *testString = @"this is a test";

    NSString *post =[NSString stringWithFormat:@"message=%@",testString];
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

    NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:@"YOUR/URL/test.php"]];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setHTTPBody:postData];
}