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Connection conn=DriverManager.getConnection("JDBC URL "); sql=" select * from some tables "; PreparedStatement stmt = conn.prepareStatement(sql); ResultSet rs = stmt.executeQuery(); ArrayList array=new ArrayList(); while (rs.next()) { AActionForm actionForm =new AActionForm (); actionForm.setId(rs.getString("Id")); actionForm.setName(rs.getString("Name")); array.add(actionForm); }
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<logic:present name=" array " scope="request"> <logic:iterate name=" array " id=" array " type="com.bhsky.webis.Goods"> <tr align="center"> <td class="table2"> <bean:write name=" array " property="goodsid"/> </td> <td class="table2"> <bean:write name=" array " property="goodsname"/> </td> </tr> </logic:iterate> </logic:present>
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Èý¡¢ÈçºÎÓ¦ÓÃÀà·´Éä»úÖÆ¼ò»¯StrutsÓ¦ÓóÌÐòµÄ¿ª·¢:
1¡¢ Ïȶ¨ÒåAction FormBean:
package com.bhsky.webis.system; import org.apache.struts.action.*; import javax.servlet.http.*; public class UsersActionForm extends ActionForm { private String usr_id; private String usr_name; public void setUsr_id(String usr_id) { this.usr_id = usr_id; } public String getUsr_id() { return usr_id; } public String getUsr_memo() { return usr_memo; } public void setUsr_name(String usr_name) { this.usr_name = usr_name; } }
2¡¢ ±àдͨÓõÄΪActionFormBean¸³ÖµµÄ·½·¨£º
///////////////////////////////////////////////////////////////////////////// //Function: Íê³ÉResultSet¶ÔÏóÏòArrayList¶ÔÏóΪ¼¯ºÏµÄ¶ÔÏóµÄת»¯ //Para:sql,Ö¸¶¨µÄ²éѯSql //Para:className,SqlÏà¶ÔÓ¦µÃJavaBean/FormBeanÀàµÄÃû×Ö //Return:ÒÔÀàclassNameΪһÌõ¼Ç¼µÄ½á¹û¼¯£¬Íê³ÉResultSet¶ÔÏóÏòArrayList¶ÔÏóΪ¼¯//ºÏµÄclassName¶ÔÏóµÄת»¯ ////////////////////////////////////////////////////////////////////////////// public ArrayList Select(String sql,String className){ ArrayList paraList=new ArrayList(); try{ if (conn == null){ Connection(); } PreparedStatement stmt = conn.prepareStatement(sql); ResultSet rs = stmt.executeQuery(); String recordValue=""; Object c1=null; paraList=new ArrayList(); ResultSetMetaData rsmd = rs.getMetaData(); int columnCount = rsmd.getColumnCount(); while (rs.next()){ c1=Class.forName(className).newInstance(); for (int i=1; i<=columnCount; i++) { if(rs.getString(rsmd.getColumnName(i))!=null){ recordValue=rs.getString(rsmd.getColumnName(i)); }else{ recordValue=""; } Method m=c1.getClass().getMethod(getSetMethodName(rsmd.getColumnName(i)), new Class[]{recordValue.getClass()}); m.invoke (c1, new Object[]{recordValue}); } paraList.add(c1); } }catch(SQLException ex){ }catch(ClassNotFoundException e){
}catch(NoSuchMethodException e) {
}catch(InvocationTargetException e){
}catch (IllegalAccessException e){
}catch(InstantiationException e){
} finaly{ closeConnection(); return paraList; } }
3¡¢ ÔÚJavaBean·â×°µÄÉÌÒµÂß¼Öе÷ÓÃSelect ·½·¨£¬È»ºóÔÚJSPÒ³ÃæÉÏÏÔʾ³öÀ´£º
//Function:È¡µÃÓû§Áбí //Para: //Return:·µ»ØÓû§Áбí ///////////////////////////////////////////////////////////////////////////// public ArrayList getUsers(){ ArrayList ret=null; DatabaseManage db=new DatabaseManage(); String sql=" select usr_id,usr_name " +" from users " ; ret=db.Select(sql," com.bhsky. webis.system.UsersActionForm"); return ret; }
4¡¢ ÔÚActionµÄexecute·½·¨Öе÷ÓÃgetUsers()·½·¨£º
public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse httpServletResponse) { /**@todo: complete the business logic here, this is just a skeleton.*/ UsersActionForm uaf=(UsersActionForm)actionForm; SystemService ubb=new SystemService(); ArrayList userList=ubb.getUsers(); request.setAttribute("userList",userList); ActionForward actionForward=actionMapping.findForward(url); return actionForward; }
5¡¢ ÔÚJSPÖÐÏÔʾ£º
<table width="700" class="1" border="1" cellspacing="1" align="center"> <tr> <td class="list" >Óû§ID</td> <td class="list" >ÐÕ Ãû</td> </tr> <logic:present name="userList" scope="request"> <logic:iterate name="userList" id="userList" type="com.bhsky.webis.system.UsersActionForm"> <tr> <td class="cell1" height="22"><bean:write name="userList" property="usr_id"/></td> <td class="cell1" height="22"><bean:write name="userList" property="usr_name"/></td> </tr> </logic:iterate> </logic:present> </table>
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