Question

我使用下面的代码从servlet连接到SQL Server 2005数据库。但它抛出了以下异常：

java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver

代码段：

import java.sql.*;
import java.io.*;

import javax.servlet.*;
import javax.servlet.http.*;

public class InsertServlet extends HttpServlet
{
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
    doGet(request,response);

}

public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
    response.setContentType("text/html");
    PrintWriter pw=response.getWriter();
    EmpDetailBean empdetailbean=new EmpDetailBean();
    Connection con=null;
    PreparedStatement pstmt2=null;
    //ResultSet rs=null;
    String employeecode=request.getParameter("employeecode");
    pw.println(employeecode);
    empdetailbean.setEmployeecode(employeecode);
    try
    {   //String emp_code=(String)session.getAttribute("empcode");
        //Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        //String url = "jdbc:sqlserver://localhost;" +  
               // "databaseName=test;user=sa;password= ;"; 

        //con=DriverManager.getConnection("Jdbc:Odbc:leave1");
        con=DriverManager.getConnection("jdbc:sqlserver://10.217.7.3;databaseName=test;user=sa;password=123;");
        String query1="insert into leavetype(dbo.empcode) values(?)";

        pstmt2=con.prepareStatement(query1);
        pstmt2.setString(1,empdetailbean.getEmployeecode());

        int k=pstmt2.executeUpdate();
        System.out.println(k);
        pstmt2.close();    

    }
    catch(Exception e)
    {   pw.println("exception"+ e);

    }


}

}

日志文件显示

May 2, 2012 11:34:19 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
May 2, 2012 11:34:19 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()

Answer 1

如果您想使用com.microsoft.sqlserver.jdbc.SQLServerDriver作为驱动程序，则需要sqljdbc.jar 存在于类路径中WEB-INF\lib。

如果您想使用Jtds驱动程序请查看此link以获取驱动程序和数据库URL

Answer 2

似乎已部署的war文件中缺少JDBC连接的Jar文件。你能否确保lib文件正好与war文件一起打包

来自servlet的INSERT抛出java.lang.ClassNotFoundException：com.microsoft.sqlserver.jdbc.SQLServerDriver

2 个答案: