java ClassNotFoundException oracle。jdbc。驾驶员仅在servlet中使用OracleDriver,使用Eclipse
以下代码在线路上失败:
Class.forName("oracle.jdbc.driver.OracleDriver");
错误如下:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
两个{
Wed_Jun_22_11:18:51_PDT_2005
false
这让我觉得这个类存在并且可以找到。同样,这个类也适用于非servlet应用程序
我已经多次重新启动了所有东西,并多次重新生成应用程序/servlet。所有值都已硬编码,以使其简单和简短
private static Connection getDBConnection() throws Exception {
System.out.println(oracle.jdbc.driver.OracleDriver.BUILD_DATE);
System.out.println(Class.class.desiredAssertionStatus());
//load the driver
Class.forName("oracle.jdbc.driver.OracleDriver");
return DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "SYSTEM", "pass");
}
失败的完整servlet:
package servletClass_3;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class OneMoreBookStore
*/
@WebServlet("/OneMoreBookStore")
public class OneMoreBookStore extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
private static Connection getDBConnection() throws Exception {
System.out.println(oracle.jdbc.driver.OracleDriver.BUILD_DATE);
System.out.println(Class.class.desiredAssertionStatus());
//load the driver
Class.forName("oracle.jdbc.driver.OracleDriver");
return DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "SYSTEM", "pass");
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try
{
Connection con = getDBConnection();
}
catch (Exception e) {
e.printStackTrace();
}
}
}
此应用程序可用于:
package servletClass_3;
import java.sql.Connection;
import java.sql.DriverManager;
public class DBConnect {
private static Connection getDBConnection() throws Exception {
System.out.println(oracle.jdbc.driver.OracleDriver.BUILD_DATE);
System.out.println(Class.class.desiredAssertionStatus());
//load the driver
Class.forName("oracle.jdbc.driver.OracleDriver");
return DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "SYSTEM", "pass");
}
public static void main(String[] args) {
try
{
Connection con = getDBConnection();
System.out.println("connection worked");
con.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
}
我正在使用:
- EclipseJavaEE1.4.2
- 雄猫7
- jdk1。七,
- 甲骨文11g R2
- Windows 7 64位
# 1 楼答案
可能您没有在应用程序中部署oracle驱动程序
您有几个选择:
WEB-INF/lib
文件夹中Build Path
->Configure Build Path...
->Order and Export
->;检查司机李># 2 楼答案
您必须包括ojdbc6。项目的部署程序集中的jar文件
选择包含jsp文件的web项目
在Eclipse的菜单栏中选择Project选项卡
在下拉菜单中选择属性
选择展开组件
添加您的ojdbc6。jar文件在其中
# 3 楼答案
尝试此操作,将
oracle.jdbc.driver.OracleTypes
更改为oracle.jdbc.OracleTypes