弄了一个上午了，还是没点用！！！！！

网上说放哪我都放了，shared/lib下，WEB-INF/lib（项目）下，common/lib下，可是都还是没用啊，真郁闷，

我的servlet代码如下：


package myServlet;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.jspsmart.upload.SmartUpload;／／报错...

public class Company_Servlet extends javax.servlet.http.HttpServlet implements
javax.servlet.Servlet{

/**
*
*/
private static final long serialVersionUID = -201651203664101197L;
/**
*
*/

public Company_Servlet(){
super();
}

public void doPost(HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException{
response.setContentType("text/html;charset=gb2312");
com.jspsmart.upload.SmartUpload mySmartUpload = new com.jspsmart.upload.SmartUpload();／／报错，，，，，，

String method=request.getParameter("method");
String mycompanyName=request.getParameter("companyName");
String mycompanyType=request.getParameter("companyType");
String mymainProduct=request.getParameter("mainProduct");
String mycreateTime=request.getParameter("createTime");
String myprovince=request.getParameter("province");
String mycity=request.getParameter("city");
System.out.print(request.getParameter("companyName"));
System.out.print(mymainProduct);


}
public void doGet(HttpServletRequest request,HttpServletResponse response) throws
ServletException,IOException{
doPost(request,response);
}
}

是我的代码错了，还是我的jspSmartUpload.jar放错了位置，
哪位好人能告诉我啊？