Java 在处理jdbc时，我在eclipse中遇到了一个错误

在编译JDBC程序时，我遇到了这个错误

程序代码：

public static void main(String[] args) {

        Connection conn=null;
        Statement stat=null;
        ResultSet rs = null;

        try
        {
            Class.forName("com.mysql.jdbc.Driver");
            conn =  (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/cricket","root","root");
            stat = ((java.sql.Connection) conn).createStatement();
            rs = stat.executeQuery("SELECT Cric_id,Cric_name,Normal_Skilla,Special_Skill,Other_Skill FROM indian");

            while(rs.next())
            {
                int id = rs.getInt("Cric_id");
                String name = rs.getString("Cric_name");
                String normal = rs.getString("Normal_Skills");
                String special = rs.getString("Special_Skill");
                String other = rs.getString("Other_Skill");

                System.out.println(id +"\t"+name+"\t"+normal+"\t"+special+"\t"+other);
            }
        }catch(Exception e)
        {
            System.out.println("Error:"+e);
        }
        finally
        {
            if(conn != null)
                try{
                    conn.close();
                }catch(Exception ig)
                {
                    System.out.println("ERROR2:"+ig);
                }
        }

    }

}

Exception in thread "main" java.lang.NoClassDefFoundError: JDBC1 (wrong name: jdbc1)
    at java.lang.ClassLoader.findBootstrapClass(Native Method)
    at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source)
    at java.lang.ClassLoader.loadClass(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 sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

错误：

public static void main(String[] args) {

        Connection conn=null;
        Statement stat=null;
        ResultSet rs = null;

        try
        {
            Class.forName("com.mysql.jdbc.Driver");
            conn =  (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/cricket","root","root");
            stat = ((java.sql.Connection) conn).createStatement();
            rs = stat.executeQuery("SELECT Cric_id,Cric_name,Normal_Skilla,Special_Skill,Other_Skill FROM indian");

            while(rs.next())
            {
                int id = rs.getInt("Cric_id");
                String name = rs.getString("Cric_name");
                String normal = rs.getString("Normal_Skills");
                String special = rs.getString("Special_Skill");
                String other = rs.getString("Other_Skill");

                System.out.println(id +"\t"+name+"\t"+normal+"\t"+special+"\t"+other);
            }
        }catch(Exception e)
        {
            System.out.println("Error:"+e);
        }
        finally
        {
            if(conn != null)
                try{
                    conn.close();
                }catch(Exception ig)
                {
                    System.out.println("ERROR2:"+ig);
                }
        }

    }

}

Exception in thread "main" java.lang.NoClassDefFoundError: JDBC1 (wrong name: jdbc1)
    at java.lang.ClassLoader.findBootstrapClass(Native Method)
    at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source)
    at java.lang.ClassLoader.loadClass(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 sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

---

我正在使用EclipseIDE，任何人都可以确保，在您的查询中没有名为

Normal\u Skills

的列。 从

  String normal = rs.getString("Normal_Skills");

到

---

反之亦然。

这可能是因为您没有在代码中选择的驱动程序的jar文件

对于“com.mysql.jdbc.Driver”，下载带有此驱动程序的jar文件并添加到项目中，然后再次尝试执行

你可以从

下载jar，试试这个

try
        {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/cricket","root","root");
            stat = conn.createStatement();
            rs = stat.executeQuery("SELECT Cric_id,Cric_name,Normal_Skilla,Special_Skill,Other_Skill FROM indian");

---

类的名称是什么？您如何调用程序？