jdbc连接sql server2008报错解决方案

jdbc连接sql server2008报错

Java code

import java.sql.*;public class JdbcSqlServer {    public static void main(String[] args) throws Exception {        Connection con = null;        Statement stmt = null;        ResultSet rs = null;        String connectionURL = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=TEST_DB_RENAME";    //为数据库的地址                Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");    //加载驱动                con = DriverManager.getConnection(connectionURL,"pengliang","1989923");    //建立与数据库的连接            stmt = con.createStatement();                        rs = stmt.executeQuery("select * from student");    //ResultSet对象来存储查询的结果                        while(rs.next()) {                System.out.println("***********************"                        +"\n"+"sno:"+"\t"+rs.getString("sno")+"\t"+"sname:"+" \t"+rs.getString("sname")+"\t"+"sgrade:"+"\t"+rs.getString("sgrade")                        );            }                con.close();        }}

显示的错误信息为
Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at JdbcSqlServer.main(JdbcSqlServer.java:11)


[解决办法]

Java code

Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class filesql的驱动版本不对。。下个支持2008的正确版本就行了
[解决办法]
版本问题，把你开发工具中的版本调整好，要不，就是你的jdk的包或.jar的包损坏了，你重新安装。 

 

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