使用mvc方式编写一个模块，但有点不明白的地方！

你可以为你的数据写一个formBean，里面全是set get 方法就可以了比如你得到一个RecordSet
然后你把得到的纪录全部转换成formBean对象，那样就是一个formBean数组
再把他方到session里面或是request里面
你就可以在jsp中用struts标签 <logic:iterate id="fromBean" name="my" type="jp.go.maff.interactive.domain.form.FormBean" indexId="index" offset="1">
            <tr class="odd1" height="20">
              <td width="40" align="center">
  <logic:notMatch name="fromBean" property="statusName" value="承認">
  <a href="javaScript:setAction('LinkFormAction.do','<bean:write name="fromBean" property="id" filter="true"/>')"><bean:write name="index" /></a>
  </logic:notMatch>   <logic:match name="fromBean" property="statusName" value="承認">
<bean:write name="index" />
  </logic:match>
  </td>
              <td width="180"><bean:write name="fromBean" property="title" filter="true"/></td>
              <td width="150"><bean:write name="fromBean" property="deptName" filter="true"/></td>
              <td width="200"><bean:write name="fromBean" property="statusName" filter="true"/></td>
              <td width="50" align="center">
  <logic:notMatch name="fromBean" property="statusName" value="承認">
                <input type="button" value="削除" name="" onClick="javaScript:ProcDelete('1','DeleteFormAction.do','<bean:write name="fromBean" property="id" filter="true"/>')">
</logic:notMatch>
              </td>
            </tr>
</logic:iterate>

有道理！
我的form bean已经写好了，那又如何把RecordSet转换成form bean呢，这是个关键所在，请指教！谢。我会给多多的分。：）

你能不能看一下 struts 的example???
那里面说得很明白.不过还是给你一个我自己的吧.这是一个标准的actionpackage com.boesoft.newscentre;import java.util.Locale;import javax.servlet.http.*;import org.apache.struts.action.*;
import org.apache.struts.util.MessageResources;
public class ForwardAction extends Action {
    public ActionForward perform(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response)
    throws java.io.IOException, javax.servlet.ServletException {
        Locale locale = this.getLocale(request);
        MessageResources messages = this.getResources();
ActionErrors errors = new ActionErrors();
        System.err.println(request.getQueryString());
        String page = ((ForwardForm) form).getPage();
        String forward = ((ForwardForm) form).getForward();
System.err.println(page);
        HttpSession session = request.getSession();        if (mapping.getAttribute() != null) {
            if ("request".equals(mapping.getScope()))
                request.removeAttribute(mapping.getAttribute());
            else
                session.removeAttribute(mapping.getAttribute());
        }        if(null != page)
            return (new ActionForward(page));
        else if(null != forward)
            return mapping.findForward(forward);        return mapping.findForward("login");
    }
}

得到datasource就在action里得就可以了.DataSource dataSource = (DataSource)servlet.getServletContext().getAttribute(Action.DATA_SOURCE_KEY);
HttpSession session = request.getSession();
Connection connection = null;

其实你的那些业务逻辑是不应该写在action当中的
关于转换的问题
FormBean fb = new FormBean（）；
fb.setNo(rs.getString(0));
fb.setName(rs.getString(1));
....

sandyen:我的目的只是取出recordset还想再做个action去显示recordset

我决定如此作：
DLForm.javapackage classlib;import org.apache.struts.action.ActionForm;
import java.sql.*;
import java.io.*;public class DLForm  implements Serializable{
private String depid;
private String depname;
public void setDepid(String depid){
this.depid=depid;
}
public String getDepid(){
return depid;
}
public void setDepname(String depname){
this.depname=depname;
}
public String getDepname(){
return depname;
}public static DLForm load(ResultSet rs) throws SQLException{
DLForm dlform=new DLForm();
try{
String strValue=null; strValue=rs.getString(0);
if (strValue!=null)
dlform.setDepid(strValue);
strValue=rs.getString(1);
if (strValue!=null)
dlform.setDepname(strValue);
return dlform;
}
catch(SQLException e){
return null;
}
}
}IndexAction.javapackage classlib;import javax.sql.DataSource;
import java.sql.*;
import java.util.*;public class IndexAction{
Connection conn;
public void setConn(Connection conn){
this.conn=conn;
}
public LinkedList getDlist() throws SQLException{
LinkedList dlist;
if (conn==null)
throw new SQLException("No Connection in DListAction"); PreparedStatement pstmt=null;
ResultSet rs=null;
dlist=new LinkedList();
try{
pstmt=conn.prepareStatement("select * from t_dep");
rs=(ResultSet)pstmt.executeQuery();
while (rs.next())
{
dlist.add(DLForm.load(rs));
}
}
finally{
if (rs!=null)
rs.close();
if (pstmt!=null)
pstmt.close();
}
return dlist;
}
}再做一个action
package classlib;
import classlib.IndexAction;
import java.io.IOException;
import java.util.LinkedList;
import java.util.Locale;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionServlet;
import org.apache.struts.util.MessageResources;
import java.sql.Connection;
import java.sql.SQLException;
import javax.sql.DataSource;public class DListAction extends Action {
Connection connection;LinkedList dlist;public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException{
ActionErrors errors = new ActionErrors();
try {
DataSource dataSource =servlet.findDataSource(null);
connection =dataSource.getConnection();dlist=new LinkedList();
IndexAction indexaction=new IndexAction();
indexaction.setConn(connection);
dlist=indexaction.getDlist();if (dlist==null) {
saveErrors(request, errors);
return (new ActionForward("No dlist in DListAction"));
}HttpSession session = request.getSession();
session.setAttribute("dlisttop",dlist);} catch (SQLException sqle) {
getServlet().log("Connection.process", sqle);
}finally {
if(connection!=null)
try {
connection.close();
} catch (SQLException e) {
getServlet().log("Connection.close", e);
}
}return (mapping.findForward("success"));
}
}
但在编译IndexAction.java时出错:
IndexAction.java:25: cannot resolve symbol
symbol:variable DLForm
location:class classlib.IndexAction
                           dlist.add(DLForm.load(rs));
1  error
不明白这是怎么回事呢?其他的xml文件基本没有问题了.只差这个编译了!
请大侠们出手!谢

我没有具体看你的程序,不过给你一些建议.第一,config里面写好你的action和与之相对应的form Bean 的对应关系.
一个在<action-mappings>里面
一个在<form-beans>的描述里面另外,一个事务bean获得数据可以这样.
在action里面调用form set给它.userBean.setForm(form) //in your action

salx(大地翔) ：现在我的程序里也有cannot resolve symbol的错误。你找出原因了吗？我也很急啊。而且我的几乎每行程序都是这个错误。一直没有解决。

现在还没有时间做，我想可能是因为没有IMPORT进DLFORM引起的，大概实例化一个dlform后应该可以解决。现在忙呀！你成功了告诉我一声原因和解决方法哦！

action里面是这样得到form的,如果你的form是注册的.(你的form的名字)form比如((DLFORM)form).getXXXXX()
getXXXXX()是dlform里面的方法.你的每个action的perform方法开始不是这样的吗?    public ActionForward perform(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response)
    throws java.io.IOException, javax.servlet.ServletException {就是在把这个form强制转换的.
如果你自己实列一个form,那么,就是formbean而是你自己的事务bean,formbean和私有的事务bean的区别在于一个注册有对应的action bean,
另一个则没有.

调试易

使用mvc方式编写一个模块，但有点不明白的地方！

解决方案 »