尝试在android studio中连接url时获取文件未找到异常。如何解决这个问题？

我正在尝试使用 wampp 连接到 mysql 并且抛出以下错误如何解决这个问题？

W/System.err: java.io.FileNotFoundException: http://192.168.2.198/login.php
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:250)
        at com.example.mysqltest.BackgroundWorker.doInBackground(BackgroundWorker.java:46)
        at com.example.mysqltest.BackgroundWorker.doInBackground(BackgroundWorker.java:19)
        at android.os.AsyncTask$2.call(AsyncTask.java:304)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
        at java.lang.Thread.run(Thread.java:761)