struts

struts 

<p>hi here is my code can you please help me to solve the exception</p>

<h1></h1>

<p><strong><em>login.html</em></strong></p>

<h1></h1>

<p><html>
<body></p>

<form action="login.do">
<pre>
user name:<input type="text" name="uname"/>
password:<input type="password" name="pass"/>
<input type="submit" value="login"/>
</pre>
</form>

<p></body></p>

<h1></html></h1>

<h1></h1>

<h1>***LoginAction.java***</h1>

<p>package com.st.struts;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class LoginAction extends Action
{
    public ActionForward execute(ActionMapping am,ActionForm af,HttpServletRequest req,HttpServletResponse res)throws Exception
    {</p>

<pre class="prettyprint">    UserForm uf=(UserForm)af;
    String uname=uf.getUname();
    String pass=uf.getPass();
    LoginModel lm=new LoginModel();
    String type=lm.validate(uname,pass);
    if(type==null)
        return am.findForward("notvalid");
    return am.findForward("type");
}
</code></pre>

<p>}</p>

<h1></h1>

<p><hr />
<strong>LoginModel.java</strong>
<hr /></p>

<pre class="prettyprint">package com.st.struts;
import java.sql.*;
public class LoginModel
{
    public String validate(String uname,String pass)
    { Connection con=null;
        try{
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        con=DriverManager.getConnection("jdbc:odbc:online","system","manager");     
        Statement st=con.createStatement();
        ResultSet rs=st.executeQuery("select type from userdetails1 where username=\'"+uname+"\' and password=\'"+pass+"\'");
        if(rs.next())
            return rs.getString(1);
        }//try
        catch(Exception e)
        {
            e.printStackTrace();
        }//catch
        finally{
            try{
            con.close();
            }catch(Exception e)
            {
            }//catch
        }//finally
        return null;
    }
}
</code></pre>

<hr />

<h6>##########################################</h6>

<p><strong>UserForm.java</strong></p>

<h6>############################################</h6>

<pre class="prettyprint">package com.st.struts;
import javax.servlet.http.*;
import org.apache.struts.action.*;
class UserForm extends ActionForm
{
    private String uname,pass;
    public void setUname(String s)
    {
        uname=s;
    }
    public void setPass(String s)
    {
        pass=s;
    }
    public String getUname()
    {
        return uname;
    }
    public String getPass()
    {
        return pass;
    }
    public ActionErrors validate(ActionMapping am,HttpServletRequest req)
    {
        ActionErrors ae=new ActionErrors();
        if(getUname()==null || getUname().equals(""))
            ae.add("unameError", new ActionMessage("uname.empty"));
        if(getPass()==null || getPass().equals(""))
            ae.add("passError", new ActionMessage("pass.empty"));
        else if(pass.length()&lt;5)
            ae.add("passError" ,new ActionMessage("pass.minlength"));
return ae;

    }
}
</code></pre>

<h6>#############################################</h6>

<h1></h1>

<p>struts-config.xml</p>

<p>Blockquote</p>

<h1></h1>

<pre class="prettyprint">&lt;struts-config&gt;
&lt;form-beans&gt;
&lt;form-bean name="userform" type="com.st.struts.UserForm"/&gt;
&lt;/form-beans&gt;
&lt;action-mappings&gt;
&lt;action path="/login" type="com.st.struts.LoginAction" name="userform" scope="session" validate="true" input="/login.html"&gt;
&lt;forward name="notvalid" path="/login.html"/&gt;
&lt;forward name="admin" path="/AdminHome.jsp"/&gt;
&lt;forward name="user" path="/UserHome.jsp"/&gt;
&lt;/action&gt;
&lt;/action-mappings&gt;

&lt;/struts-config&gt;
</code></pre>

<h1></h1>

<hr />

<p><strong>web.xml</strong></p>

<hr />

<pre class="prettyprint"> &lt;web-app&gt;
    &lt;servlet&gt;
    &lt;servlet-name&gt;as&lt;/servlet-name&gt;
    &lt;servlet-class&gt;org.apache.struts.action.ActionServlet&lt;/servlet-class&gt;
    &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
    &lt;/servlet&gt;
    &lt;servlet-mapping&gt;
    &lt;servlet-name&gt;as&lt;/servlet-name&gt;
    &lt;url-pattern&gt;*.do&lt;/url-pattern&gt;
    &lt;/servlet-mapping&gt;
    &lt;welcome-file-list&gt;
    &lt;welcome-file&gt;login.html&lt;/welcome-file&gt;
    &lt;/welcome-file-list&gt;
    &lt;/web-app&gt;
</code></pre>

<hr />

<p><hr />
<strong>AdminHome.jsp</strong></p>

<hr />

<pre class="prettyprint">&lt;html&gt;
&lt;body&gt;
welcome to the Admin home page&lt;br/&gt;
User name:&lt;%= request.getParameter("uname")%&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<hr />

<p><hr />
<strong>UserHome.jsp</strong></p>

<hr />

<pre class="prettyprint">&lt;html&gt;
&lt;body&gt;
welcome to the non Admin home page&lt;br/&gt;
User name:&lt;%= request.getParameter("uname")%&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<hr />

<hr />

<p>**and i created a table with the name userdetails1 and the columns are as shown below
column name=username(varchar2(20)
column namepassword varchar2(20)**</p>

<hr />
View Answers

February 16, 2011 at 3:29 PM

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