我使用 Netbeans，做一个 java 应用程序。我在 netbeans 中使用 Java DB 为 db connetion 创建了一个 ConnectDB 类。我启动了服务器，十个连接到数据库。当我运行它产生的文件时
java.lang.ClassNotFoundException: org.apache.derby.jdbc.ClientDriver @ 25 line
和
java.sql.SQLException: No suitable driver found for jdbc:derby://localhost:1527/Libraryprj;create=true
@第 30 行代码
代码如下
package Lms;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
/**
*
* @author JOJO
*/
public class ConnectDB {
static Connection conn;
public static void main(String[] args) {
String driver = "org.apache.derby.jdbc.ClientDriver";
String connectionURL = "jdbc:derby://localhost:1527/Libraryprj;create=true";
String createString = "CREATE TABLE Employee (NAME VARCHAR(32) NOT NULL, ADDRESS VARCHAR(50) NOT NULL)";
try {
Class.forName(driver);
} catch (java.lang.ClassNotFoundException e) {
e.printStackTrace();
}
try {
conn = DriverManager.getConnection(connectionURL);
Statement stmt = (Statement) conn.createStatement();
stmt.executeUpdate(createString);
PreparedStatement psInsert = conn.prepareStatement("insert into Employee values (?,?)");
psInsert.setString(1, args[0]);
psInsert.setString(2, args[1]);
psInsert.executeUpdate();
Statement stmt2 = (Statement) conn.createStatement();
ResultSet rs = stmt2.executeQuery("select * from Employee");
int num = 0;
while (rs.next()) {
System.out.println(++num + ": Name: " + rs.getString(1) + "\n Address" + rs.getString(2));
}
rs.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}