Display tag

galera sera que alguem pode me dar um força como eu transformo este codigo feito, eu gostaria de colocar paginação mais com o display tag mais nao consigo vou postar o codigo pra vcs verem…

jsp

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@ taglib uri="http://displaytag.sf.net" prefix="display" %>


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>

    <h1>JSP Page</h1>
    
<%
if(request.getAttribute("cli")!= null){
    Cliente cli = (Cliente).request.getAttribute("cli");
}

%>
 
 <display:table name="cli" class="Cliente">
 <display:column property="nome" />
 <display:column property="email" />
</display:table>
    

    </body>
</html>

Dao

package guardr;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class Dao {

public Dao() {
}

protected static PreparedStatement stmt;
protected static Connection con;
protected static ResultSet rs;

public void open(){
    
    try{
        Class.forName("com.mysql.jdbc.Driver");
        con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","nat");
        
    }catch(Exception e){
        e.getMessage();            
        
    }
}

}

exibe

package guardr;
import java.util.ArrayList;
import java.util.List;

public class Exibe extends Dao{
    
   
    public Exibe() {
    }
    
     public List exibir(){
        
       List lista = new ArrayList();
       
        try{
            stmt = con.prepareStatement("select * from aluno");
            rs = stmt.executeQuery();
                                  
            while(rs.next()){
                Cliente cliente = new Cliente();
                
                cliente.setNome(rs.getString("nome"));
                cliente.setEmail(rs.getString("email"));
                
            }
            
            
        }catch(Exception e){
            e.getMessage();
        }
        return lista;
    }
    
}

bean

package guardr;

public class Cliente {
   private String nome;
   private String email;
    
    public Cliente() {
    }

    public String getNome() {
        return nome;
    }

    public void setNome(String nome) {
        this.nome = nome;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

}

servlets

package guardr;
/*
 * Control.java
 *
 * Created on 10 de Maio de 2008, 19:45
 */

import java.io.*;
import java.net.*;

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

/**
 *
 * @author Thiago Meinel
 * @version
 */
public class Control extends HttpServlet {
    
    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
      
        
        Cliente cli = new Cliente();
        Exibe exibe = new Exibe();
        
        exibe.open();
        exibe.exibir();
        
        request.setAttribute("cli",cli);
        request.getRequestDispatcher("index.jsp").forward(request,response);    
        
        
        
        out.close();
    }
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}

o que estou fazendo de errado quero entedner isso por fvor me deem um a força estou começando abraço!!!

Ola,

Cara… se não me engano o display:table tem um atributo que é pagesize ou apenas size… não me lembro…
mas ai nesse atributo, é só vc colocar o número de linhas que queira mostrar…
abraco

Olá dark neo, queria ver com você se conseguistes fazer a sua aplicação funcionar, pois segui os seus arquivos de teste, simplesmente adaptando para minha base de dados e não consegui fazer com que funcionasse. Tento debugar a aplicação, mas ao debugá-la verifico que ela nem chega a passar pelo servlet Control.java, ou seja não chama as classes Pessoa e nem Exibe, ou seja, não faz o select para trazer dados na tela, sendo que no jsp quando faz o teste:if(request.getAttribute("pess")!= null){ Pessoa pess = (Pessoa) request.getAttribute("pess"); } Passa direto, pois vem nulo. Coloquei os arquivos commons-logging.jar,
commons-lang-2.1.jar,
commons-collections.jar,
commons-beanutils-1.8.0.jar,
log4j.jar,
mysql-connector-java-5.1.7-bin.jar e displaytag-1.2.jar no Classpath da aplicação. Coloquei também o arquivo displaytag.tld na pasta WEB-INF da aplicação.

Segue abaixo o código que adaptei para a base orcl, tabela pessoa que utilizo:
Pessoa.java

package guardr;

public class Pessoa{
	private String nmpessoarazao;
	private String nrcpf;

	public Pessoa() {
	}

	public String getNmpessoarazao() {
		return nmpessoarazao;
	}

	public void setNmpessoarazao(String nmpessoarazao) {
		this.nmpessoarazao = nmpessoarazao;
	}

	public String getNrcpf() {
		return nrcpf;
	}

	public void setNrcpf(String nrcpf) {
		this.nrcpf = nrcpf;
	}

	
}

Dao.java

[code]
package guardr;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class Dao {

public Dao() {
}

protected static PreparedStatement stmt;
protected static Connection con;
protected static ResultSet rs;

public void open() {

	try {
		Class.forName("com.mysql.jdbc.Driver");
		con = DriverManager.getConnection(
				"jdbc:mysql://localhost:3306/orcl", "root", "");
	} catch (Exception e) {
		e.getMessage();
	}
}

}[/code]

Exibe.java

[code]package guardr;

import java.util.ArrayList;
import java.util.List;

public class Exibe extends Dao {

public Exibe() {
}

public List exibir() {

	List lista = new ArrayList();

	try {
		stmt = con.prepareStatement("select * from pessoa");
		rs = stmt.executeQuery();

		while (rs.next()) {
			Pessoa pess = new Pessoa();

			pess.setNmpessoarazao(rs.getString("nmpessoarazao"));
			pess.setNrcpf(rs.getString("nrcpf"));

		}

	} catch (Exception e) {
		System.out.println("Problemas Exibir");
		e.getMessage();
	}
	return lista;
}

}[/code]

Control.java

[code]
package guardr;

/*

  • Control.java
  • Created on 10 de Maio de 2008, 19:45
    */

import java.io.;
import java.net.
;

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

/**
*

  • @author Thiago Meinel

  • @version
    */
    public class Control extends HttpServlet {

    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.

    • @param request servlet request

    • @param response servlet response
      */
      protected void processRequest(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
      response.setContentType(“text/html;charset=UTF-8”);
      PrintWriter out = response.getWriter();

      Pessoa pess = new Pessoa();
      Exibe exibe = new Exibe();

      exibe.open();
      exibe.exibir();

      request.setAttribute(“pess”,pess);
      request.getRequestDispatcher(“index.jsp”).forward(request,response);

      out.close();
      }

    // <editor-fold defaultstate=“collapsed” desc=“HttpServlet methods. Click on the + sign on the left to edit the code.”>
    /** Handles the HTTP <code>GET</code> method.

    • @param request servlet request
    • @param response servlet response
      */
      protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
      processRequest(request, response);
      }

    /** Handles the HTTP <code>POST</code> method.

    • @param request servlet request
    • @param response servlet response
      */
      protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
      processRequest(request, response);
      }

    /** Returns a short description of the servlet.
    */
    public String getServletInfo() {
    return “Short description”;
    }
    // </editor-fold>
    }[/code]

index.jsp

[code]
<%@page contentType=“text/html”%>
<%@page pageEncoding=“UTF-8”%>
<%@ taglib uri=“http://displaytag.sf.net” prefix=“display” %>

<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”
http://www.w3.org/TR/html4/loose.dtd”>

<%@page import=“guardr.Pessoa”%><html>
<head>
<meta http-equiv=“Content-Type” content=“text/html; charset=UTF-8”>
<title>JSP Page</title>
</head>
<body>

&lt;h1&gt;JSP Page&lt;/h1&gt;

<%
if(request.getAttribute(“pess”)!= null){
Pessoa pess = (Pessoa) request.getAttribute(“pess”);
}
%>

<display:table name=“pess” class=“Pessoa” pagesize=“1”>
<display:column property=“nmpessoarazao” />
<display:column property=“nrcpf” />
</display:table>

&lt;/body&gt;

</html>

web.xml

&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt; &lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"&gt; &lt;display-name&gt;jsp_display&lt;/display-name&gt; &lt;welcome-file-list&gt; &lt;welcome-file&gt;index.html&lt;/welcome-file&gt; &lt;welcome-file&gt;index.htm&lt;/welcome-file&gt; &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt; &lt;welcome-file&gt;default.html&lt;/welcome-file&gt; &lt;welcome-file&gt;default.htm&lt;/welcome-file&gt; &lt;welcome-file&gt;default.jsp&lt;/welcome-file&gt; &lt;/welcome-file-list&gt; &lt;servlet&gt; &lt;description&gt;&lt;/description&gt; &lt;display-name&gt;Control&lt;/display-name&gt; &lt;servlet-name&gt;Control&lt;/servlet-name&gt; &lt;servlet-class&gt;guardr.Control&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;Control&lt;/servlet-name&gt; &lt;url-pattern&gt;/Control&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;taglib&gt; &lt;taglib-uri&gt;http://displaytag.org&lt;/taglib-uri&gt; &lt;taglib-location&gt;/WEB-INF/displaytag.tld&lt;/taglib-location&gt; &lt;/taglib&gt; &lt;/web-app&gt;
Agradeço se puderes me dar uma dica do que posso estar fazendo de errado.