packageconn; importjava.sql.*; publicclassconnectionma { staticstringsdriver=' com.MySQL.JDBC.driver '; staticstringsurl=' JDBC : MySQL 3360//127.0.0.133603306/long '; staticStringsUser='ro .
package conn;
import java.sql.*;
公共类连接ma {
staticstringsdriver=' com.MySQL.JDBC.driver ';
staticstringsurl=' JDBC : MySQL 3360//127.0.0.133603306/long ';
static String sUser='root ';
static String sPsw='root ';
publicstaticconnectiongetconnection (
connection conn=空;
try{
class.forname(sdriver );
conn=driver manager.getconnection (surl,sUser,sPsw );
}catch(exceptione ) {
system.out.println(e; }
return conn;
}
publicstaticvoidcloseconnection (connection conn )
try{
if(Conn!=null ) {
conn.close (;
System.out.println (“连接已关闭”);
}
}catch(exceptione ) {
system.out.println(e;
}
}
publicstaticvoidmain (string [ ] args ) {
connection conn=connection ma.getconnection (;
system.out.println('conn='conn );
}
}
我登录的时候,总是给空指针一个异常的错误。 虾这是哪里出了问题? 是刚进入我使用的windows7系统的mysql
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