DBHelper.javaSymbol nicht
package com.control;
import java.sql.*;
public class DBHelper
{
Connection conn;
Statement st;
ResultSet rs;
public DBHelper()throws ClassNotFoundException
{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
public boolean getConnection()throws SQLException
{
conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","system");
if(conn!=null)
return true;
return false;
}
public void execute(String query)throws SQLException
{
st=conn.createStatement();
st.execute(query);
}
public boolean match(String uname,String pwd)throws Exception
{
st=conn.createStatement();
rs=st.executeQuery("select * from register");
while(rs.next())
{
String unm=rs.getString(1);
String pd=rs.getString(2);
if(uname.equals(unm) && pwd.equals(pd))
{
return true;
}
}
return false;
}
}
LoginSevlet.java
package com.control;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
public class LoginServlet extends HttpServlet
{
public void doPost(HttpServletRequest req,HttpServletResponse res)throws IOException,ServletException
{
try{
DBHelper obj=new DBHelper();
obj.getConnection();
PrintWriter out=res.getWriter();
res.setContentType("text/html");
String uname=req.getParameter("email");
String pwd=req.getParameter("password");
//ResultSet rs=obj.match(uname,pwd);
//if(uname.equals(rs.getString(1)) && pwd.equals(rs.getString(2)))
if(obj.match(uname,pwd))
{
RequestDispatcher rd=req.getRequestDispatcher("profile.html");
rd.forward(req,res);
}
else
{
RequestDispatcher rd=req.getRequestDispatcher("index.html");
rd.include(req,res);
out.println("<b>Incorrect Email or password!</b>");
}
}catch(Exception e)
{
}
}
}
I am trying to access DBHelper class in LoginServlet while Compilation i did javac DBHelper.java javac -cp "C:\Users\dell\Desktop\MYServlet\WEB-INF\lib\servlet-api-2.5.jar;" LoginServlet.java LoginServlet.java:13: error: cannot find symbol
DBHelper obj=new DBHelper();
^
symbol: class DBHelper
location: class LoginServlet
LoginServlet.java:13: error: cannot find symbol
DBHelper obj=new DBHelper();
^
symbol: class DBHelper
location: class LoginServlet
2 errors
I have placed .java files in C:\Users\dell\Desktop\MYServlet\WEB-INF\classes\com\control
All the Files are in the same package and that too public then why cant LoginServlet access DBHelper class
Sie sind im selben Paket dann warum sollte ich importieren und ich denke, das Keyword-Paket in Ihrer Import-Anweisung ist falsch. – user5501265
Entschuldigung dafür, aktualisiert. –
Ich habe sogar versucht, zu importieren, aber es endet mit demselben Fehler – user5501265