java - 我如何从 Java 代码调用 PHP 脚本？

Question

正如标题所说...当用户单击我的 Java Swing 应用程序中的按钮时，我尝试使用以下代码执行 PHP 脚本:

URL url = new URL( "http://www.mywebsite.com/my_script.php" );
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.connect();

但是没有任何反应...... 有什么问题吗？

Answer 1

我认为您错过了下一步，例如:

InputStream is = conn.getInputStream();

HttpURLConnection 基本上只在 connect 上打开套接字，以便执行您需要执行的操作，例如调用 getInputStream() 或更好getResponseCode()

URL url = new URL( "http://google.com/" );
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
if( conn.getResponseCode() == HttpURLConnection.HTTP_OK ){
    InputStream is = conn.getInputStream();
    // do something with the data here
}else{
    InputStream err = conn.getErrorStream();
    // err may have useful information.. but could be null see javadocs for more information
}