代码如下:
package my.dbdao;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class db {
protected static String db_ClassName="microsoft.sqlserver.jdbc.SQLServerDriver";
protected static String db_URL="jdbc:sqlserver://localhost:1433; DataBaseName=library";
protected static String userName="sa";
protected static String passWord="123456";
private static Connection conn=null;
private static Statement stmt=null;
public Connection getConn() throws ClassNotFoundException, SQLException{
Class.forName(db_ClassName);
Connection conn=DriverManager.getConnection(db_URL,userName,passWord);
return conn;
}
public static void main(String[] args) throws ClassNotFoundException, SQLException {
db dao = new db();
Connection conn = dao.getConn();
System.out.println(conn);
}
}
异常如下:Exception in thread "main" java.lang.ClassNotFoundException: microsoft.sqlserver.jdbc.SQLServerDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at my.dbdao.db.getConn(db.java:19)
at my.dbdao.db.main(db.java:26)
有哪位给小弟解答一下,我是初学者~~万分感谢~
package my.dbdao;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class db {
protected static String db_ClassName="microsoft.sqlserver.jdbc.SQLServerDriver";
protected static String db_URL="jdbc:sqlserver://localhost:1433; DataBaseName=library";
protected static String userName="sa";
protected static String passWord="123456";
private static Connection conn=null;
private static Statement stmt=null;
public Connection getConn() throws ClassNotFoundException, SQLException{
Class.forName(db_ClassName);
Connection conn=DriverManager.getConnection(db_URL,userName,passWord);
return conn;
}
public static void main(String[] args) throws ClassNotFoundException, SQLException {
db dao = new db();
Connection conn = dao.getConn();
System.out.println(conn);
}
}
异常如下:Exception in thread "main" java.lang.ClassNotFoundException: microsoft.sqlserver.jdbc.SQLServerDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at my.dbdao.db.getConn(db.java:19)
at my.dbdao.db.main(db.java:26)
有哪位给小弟解答一下,我是初学者~~万分感谢~
这个貌似不对吧??
应该是com.microsoft.jdbc.sqlserver.SQLServerDriver
String dbURL = "jdbc:microsoft:sqlserver://localhost:1433; DatabaseName=sample";而SQL Server 2005 中加载驱动和url的语句则为String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=sample";
改成:protected static String db_URL="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=library";
protected static String db_ClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver";
还有,你尽量用try{}catch{},别把异常抛出去。
关于引入的:
在SQL Server 2000 中加载驱动和URL路径的语句是String driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
String dbURL = "jdbc:microsoft:sqlserver://localhost:1433; DatabaseName=sample";而SQL Server 2005 中加载驱动和url的语句则为String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String dbURL = "jdbc:sqlserver://localhost:1433; DatabaseName=sample";
两个也都试了,还是不行~~数据库服务重启了,密码什么都好着呢~同学都成功了,我不行,郁闷~~
一步一步的调不就可以了吗?
- -! db_ClassName中少了个com 汗~~