嘿傢伙,我在我的主機上運行一個MySQL服務器。 下面提供了代碼。當我嘗試從另一臺連接到相同路由器的機器運行相同的代碼時。我得到了我在代碼下面提供的異常。嘿需要幫助與MySQL異常我越來越abt通信鏈接失敗
請幫忙。代碼: import java.sql。 ; import java.io.;
public class Login{
public static void main(String[] args) throws IOException {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
Connection conn = null;
String url = "jdbc:mysql://"+br.readLine()+":3306/";
String dbName = "p2p";
String driver = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "123";
System.out.println("Please input Username:");
String user=br.readLine();
System.out.println("Please input Password:");
String pass=br.readLine();
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url+dbName,userName,password);
String sql="select password from newuser where username='"+user+"'";
Statement stmt=null;
ResultSet rs=null;
try{
stmt=conn.createStatement();
rs=stmt.executeQuery(sql);
if(rs.next())
{
if(rs.getString("password").equals(pass))
System.out.println("true");
else
System.out.println("false");
}
else System.out.println("false");
}
catch(Exception e){System.out.println(e);}
conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}}
例外: -
com.mysql.jdbc.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driv
er has not received any packets from the server.
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1
112)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:346)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2334)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
371)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2163)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:374)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:305)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Login.main(login.java:20)
Caused by: java.net.UnknownHostException: 192.168.1.23306: 192.168.1.23306
at java.net.InetAddress.getAllByName0(InetAddress.java:1128)
at java.net.InetAddress.getAllByName0(InetAddress.java:1098)
at java.net.InetAddress.getAllByName(InetAddress.java:1061)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:244)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:295)
... 9 more
我更新了mysql服務器中的權限表以允許特定用戶登錄。 – anonymous123 2011-03-07 08:52:04
這是否有效?其他人可能會得到這個錯誤,並可能想知道如何解決它。 – ProNeticas 2011-03-09 02:11:31