java - MySQL server connection error? -

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मेरा प्रोग्राम प्राप्त करने के लिए localhost MySQL सर्वर से कनेक्ट करने में सक्षम है इससे डेटा लेकिन जब मैंने एक सर्वर पर डेटाबेस अपलोड किया तो मैं किसी और से कनेक्ट नहीं कर पा रहा हूं।

<पूर्व> अंतिम स्थिर स्ट्रिंग db_url = "jdbc: mysql: //***.******************************"; स्ट्रिंग कार्ड = cardnumber.getText (); स्ट्रिंग पिन = पिनकोड.गेट टेक्स्ट (); स्ट्रिंग पिंडब = नल; स्ट्रिंग pinsql = "का चयन करें * से कार्ड 'जहां` कार्ड_एनम्बर` = "+ कार्ड +"; "; कोशिश {class.forName (jdbc_driver); Con = DriverManager.getConnection (db_url, "bilig", "199108"); Ps = con.prepareStatement (pinsql); Rs = ps.executeQuery (); अगर (rsnext ()); {Pindb = rs.getString ("कोड") + ""; Cardnumber.setText (""); Pincode.setText (""); }} पकड़ (अपवाद जी) {System.out.println ("नहीं मिला!"); g.printStackTrace (); }

मैं कमांड लाइन के साथ डेटाबेस तक पहुंच सकता हूं, लेकिन इससे मुझे "होस्ट" त्रुटि मिलती है । । । 'इस MySQL सर्वर से कनेक्ट करने की अनुमति नहीं है'। मैंने अपने आपको सभी विशेषाधिकारों को दिया जो मुझे चाहिए। क्या मुझे किसी अन्य प्रोग्राम की आवश्यकता है जैसे कि Tomcat , अपाचे , etc?

आपको स्थिति को पूरा करने के लिए मूल्यों को समायोजित करें।


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