Struts如何实现动态的checkbox,希望高手们都来关注一下!200分

其实方法一样了；通过ACTIONFORM把参数传过来；让它动态显示就行了；

希望大家关注,我想用struts的人,人人都会遇到这样的问题,如果能有个最终解决方法.我想这是一大贡献.敬请高手们关注!!!

HITZXL(编程要厚道) 说的对。

checkbox的name应该是一样的
<INPUT TYPE="checkbox" NAME="name" value="0">
<INPUT TYPE="checkbox" NAME="name" value="1">
<INPUT TYPE="checkbox" NAME="name" value="2">
在ActionForm中，用int[] name（当然也可能是String[]、long[]），和相应的get、set方法，这样就能取到所有选中的值，然后遍历处理。
对于Struts的checkbox标签，确实有局限，我已经重写了checkbox的标记库，以适应自己的需要。

laoer(laoer),老兄能给个例子,比如你自己该项的tag看看吗?我需要的是动态的.

JSP:
<html:checkbox property="check" value="1"/>
<html:checkbox property="check" value="2"/>
<html:checkbox property="check" value="3"/>Action Form(Dynamic Form):
<form-property name="check" type="java.lang.String[]"/>Session bean:
String[] x = (String[])map.get("check");是一个数组

view.jsp<%@ page contentType="text/html; charset=GBK" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<html:html>
<head>
<title>view Info</title>
</head>
<body>
<p align="center">查看疑问信息</p>
<table width="600" border="1" align="center" cellpadding="2" cellspacing="0">
  <tr align="center">
    <td colspan="2"><bean:write name="row" property="title"/></td>
  </tr>
  <tr>
    <td>网友:<bean:write name="row" property="nickname"/></td>
    <td>添加时间:<bean:write name="row" property="addtime"/></td>
  </tr>
  <tr>
    <td>问题类型:
      <html:radio name="row" property="questiontype" value="1"><bean:message key="add.label.questiontype.option1"/></html:radio>
      <html:radio name="row" property="questiontype" value="2"><bean:message key="add.label.questiontype.option2"/></html:radio>
      <html:radio name="row" property="questiontype" value="3"><bean:message key="add.label.questiontype.option3"/></html:radio>
    </td>
    <td>回复类别:
     <html:multibox name="row" property="replytype" value="1"/><bean:message key="add.label.replytype.option1"/>
     <html:multibox name="row" property="replytype" value="2"/><bean:message key="add.label.replytype.option2"/>
    </td>
  </tr>
  <tr>
    <td width="88" valign="top"><bean:message key="add.label.city"/></td>
    <td width="506">
      <html:select name="row" property="city">
          <html:option value="葫芦岛">葫芦岛1</html:option>
          <html:option value="沈阳">沈阳1</html:option>
          <html:option value="抚顺">抚顺1</html:option>
      </html:select>
    </td>
  </tr>
  <logic:notEmpty name="row" property="attach" >
  <tr>
    <td colspan="2"><bean:write name="row" property="attach" filter="false"/></td>
  </tr>
  </logic:notEmpty>
  <tr>
    <td colspan="2"><bean:write name="row" property="question"/></td>
  </tr></table>
</body>
</html:html>

ViewAction.javapackage question;import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.util.*;
import java.sql.*;
import org.apache.struts.taglib.html.BaseHandlerTag;public class ViewAction extends Action {
    public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
        ResultSet rs = null;
        DB db = null;
        HashMap row = null;
        String sql = "";
        String tmp = "";
        int id ;        try {
            id = Integer.parseInt(httpServletRequest.getParameter("id"));
        }
        catch(Exception e){
            id = 0;
        }
        sql = "select title,nickname,addtime,replytype,questiontype,tele,email,attach,question,city from question where id =" + id;
        db = new DB();
        db.getConnect();
        try {
            rs = db.query(sql);

           row = new HashMap(1);
           if (rs.next()) {
               row.put("title", rs.getString("title"));
               row.put("nickname", rs.getString("nickname"));
               row.put("tele", rs.getString("tele"));
               row.put("email", rs.getString("email"));
               row.put("questiontype", rs.getString("questiontype"));
               row.put("replytype", rs.getString("replytype").split(","));
               row.put("addtime", rs.getString("addtime"));
               row.put("question", rs.getString("question"));
               row.put("city", rs.getString("city"));               if (rs.getString("attach").equals("")) {
                   row.put("attach","");
               }
               else {
                   row.put("attach",
                           "<a href='./upload/" + rs.getString("attach") +
                           "' target='_blank'>View Attach</a>");
               }
           }        }
        catch(Exception e) {
            System.out.println("Fetch Info errors:" + e);
        }
        finally{
            try{
                rs.close();
                db.close();
            }
            catch(Exception e) {
                System.out.println("Close Connection Error:" + e);
            }
        }
        httpServletRequest.setAttribute("row", row);
        return actionMapping.findForward("view");    }
}

Struts中处理动态checkbox应该用multibox框 like this:      <html:multibox property="ids" disabled="true">
        <bean:write name="document" property="documentId"/>
      </html:multibox>然后你的bean属性应该是数组形式 like thisInteger ids[];{set ... get...}

我觉得这种东西在很多页面都会存在，应该做成通用控件，而不是在每个页面都写类似的代码．可以考虑用tiles作，配合ControlClass提供数据．带当前值作为参数进去．应该很方便．

根据上面的想法，做了一下，还可以. checkbox列表控件：
1. 定义Tile模板. tiles-defs.xml:
  <definition controllerClass="mytest.MasterDataControler" name="list" path="/control/checkboxlist.jsp"/>
2. 定义MasterDataControler.java:
package mytest;
import org.apache.struts.action.*;
import javax.servlet.http.*;
import org.apache.struts.tiles.ComponentContext;
import javax.servlet.ServletContext;
public class MasterDataControler implements org.apache.struts.tiles.Controller{
  public void perform(ComponentContext tileContext, HttpServletRequest request,
                      HttpServletResponse response,
                      ServletContext servletContext) {
    request.setAttribute("master",new MasterDataFormBean()); //构造缓存主数据，或者根据用户参数动态构造．
  }
}
3. MasterDataFormBean.java:
public class MasterDataFormBean  {
  public String[] getList(){
    String[] list = new String[]{"a","b","c"};
    return list;
  }
}
4. checkboxlist.jsp:
<tiles:useAttribute name="paramName"/>
<logic:iterate id="item" name="master" property="list">
<html:multibox property='<%=(String)paramName%>'><bean:write name="item"/></html:multibox>
        <bean:write name="item"/>
</logic:iterate>5. 在网页中调用控件：
      <tiles:insert definition="list" flush="false">
        <tiles:put name="paramName" value="list"/>  这里每个jsp页面控件的名称可能会不同．
      </tiles:insert>

参考：http://husted.com/struts/tips/007.html

<html:select property="assessyear" style="height:100;width:150" >
<html:options collection="assessyear" property="value" labelProperty="label" />
</html:select>

<html:select property="AAA">
<html:options collection="BBB" property="code" labelProperty="label" />
</html:select>

可参考http://dev.csdn.net/user/kui: 《Struts复选框的实现》
《Struts单选框的实现》
《Struts下拉框的实现》

调试易

Struts如何实现动态的checkbox,希望高手们都来关注一下!200分

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