PHP从Java接收POST请求

Question

EDIT: this is what is shown in my website logs xx.xx.xxx.xx - - [27/Jan/2012:17:42:24 -0500] "POST /dir/addData2.php HTTP/1.1" 200 - www.mywebsites.com "-" "Java/1.7.0" "-"

I am hosting my website at 1&1, and I want to have page blank.php that should take a POST request and upload it to my database. I think I am sending my POST properly, and that somehow I am not handling it properly on my website. Because nothing is being inserted to my database. The response has content length 0, but even if i send a header with the length of the string it wont change. Another option is that the host wont allow me to do remote post requests (still waiting on reply).

I send the post request from a Java application like this:

URL url = new URL("www.mywebsite.com/blank.php");    
HttpURLConnection request = (HttpURLConnection)url.openConnection();
request.setRequestProperty("Content-type","application/x-www-form-urlencoded");
request.setRequestMethod("POST");
OutputStreamWriter post = new OutputStreamWriter(request.getOutputStream());
String data = URLEncoder.encode("account", "UTF-8") + "=" + URLEncoder.encode(message[0], "UTF-8");
data += "&" + URLEncoder.encode("message", "UTF-8") + "=" + URLEncoder.encode(message[2], "UTF-8");
data += "&" + URLEncoder.encode("type", "UTF-8") + "=" + URLEncoder.encode(message[0], "UTF-8");
post.write(data);
post.flush();
/*
/ String example
/account=103&message=Feller+1391.88+0&type=103
*/

The response from the server is:

null=[HTTP/1.1 200 OK]
Date=[Fri, 27 Jan 2012 21:59:10 GMT]
Content-Length=[0]
Keep-Alive=[timeout=2, max=200]
Connection=[Keep-Alive]
Content-Type=[text/html]
Server=[Apache]
X-Powered-By=[PHP/5.2.17]

My webpage has this basic PHP code (right now, will improve/check for stuff later)

$link = mysql_connect($hostname, $username, $password);
$db_selected = mysql_select_db($database, $link);
$query = "INSERT INTO newData(account, message, type) VALUES('$_POST[account]', '$_POST[message]', '$_POST[type]')";
mysql_query($query) || die();

I want to point out that I do not have a private server, and I will probably use http://hc.apache.org/httpcomponents-core-ga/examples.html later. Right now I just want to send a string from my Java application, receive it with PHP and insert to MySQL database.

Answer 1

Yes, I'm certain your ISP allows both "post" and "get" HTTP server requests.

Superficially, both your Java and PHP look "OK".

STRONG SUGGESTION:

1) Check your Apache logs on the server.

Make sure the request arrived (it probably did).

Check for errors (there could well be none for your request - but you SHOULD see SOMETHING in the Apache error log.

2) Verify PHP is working.

Writing a "hello world" page with "phpinfo ();" is a good way to do this.

3) Verify that MySQL is working.

Writing a "hello world" PHP page to verify you can 1) connect, 2) make a query, and 3) echo the query back in your web browser is ideal.

4) Verify that you can successfully read the "$_POST[account]" value you THINK you're getting from the client.

5) At that point, you should be able to:

a) have the client communicate with your server

b) read the post request and write it to your database

'Hope that helps .. and please post back with any specific questions/problems you might have.

Answer 2

You haven't told the client code that this is a POST request. It will probably do a GET by default.

url = new URL(targetURL);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");

Answer 3

It looks like you're not setting the request method on your HttpUrlConnection, and the default is GET. You'd need something like

request.setRequestMethod("POST");

If that doesn't work, I'd consider rather using the Apache HTTP client right away from the beginning, it's easiert to use than Java's standard HTTP client API.