📄 gerinfoservlet.java
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package login;
import java.io.*;
import java.util.*;
import java.sql.SQLException;
import javax.servlet.http.HttpServlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class GerinfoServlet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doPost(request,response);
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
try {
String loginname = request.getParameter("loginname");
String password = request.getParameter("password");
DBConnection db = new DBConnection();
db.setLoginName(loginname);
db.setPassWord(password);
List list = db.sqlvalidate(db);
if (list.size() > 0) {
request.setAttribute("list", list);
request.getRequestDispatcher("Showinfo.jsp").forward(request,
response);
} else {
request.getRequestDispatcher("ShowErr.jsp").forward(request,
response);
}
} catch (IOException ex) {
} catch (ServletException ex) {
} catch (SQLException ex) {
}
}
//Clean up resources
public void destroy() {
}
}
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