Question

我试图执行wicket程序来完成以下任务，一个。表单中有一个提交按钮湾当我点击我必须在同一页面的数据视图中显示输出我的代码如下，需要您帮助修复错误并获取输出

Demoapplication.java

package com.demo.application;

import org.apache.wicket.Page;
import org.apache.wicket.protocol.http.WebApplication;
import com.demo.pages.*;

public class DemoApplication extends WebApplication {

    @Override
    public Class<? extends Page> getHomePage() {
        return DemoHomePage.class;
    }

}

DemoHomePage.html：

<html>
<body>
    <form wicket:id="homePageForm">
        <input type="submit" value="ok">
    </form>
    <table>
        <tr>
            <th> Id </th>
            <th> Name </th>
        </tr>
        <tr wicket:id="row">
            <td wicket:id="dataRow"> </td>
        </tr>
    </table>
</body>
</html>

DemoHomePage.java

package com.demo.pages;

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

import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.form.*;
import org.apache.wicket.markup.html.list.*;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.RepeatingView;
import org.apache.wicket.markup.repeater.data.DataView;
import org.apache.wicket.markup.repeater.data.ListDataProvider;

import com.sun.xml.internal.ws.org.objectweb.asm.Label;

public class DemoHomePage extends WebPage {

    public DemoHomePage () {
        Form form=new Form("homePageForm") {

            public void submit(){

                List<DemoBean> list = new ArrayList();
                list.add(new DemoBean("1","ram"));
                list.add(new DemoBean("2","sam"));

                ListDataProvider<DemoBean> listDataProvider = new ListDataProvider<DemoBean>(list);

                DataView<DemoBean> dataView = new DataView<DemoBean>("row",listDataProvider) {

                    protected void populateItem(Item<DemoBean> item) {

                        DemoBean bean=item.getModelObject();
                        RepeatingView repeatingView = new RepeatingView("dataRow");
                        repeatingView.add(new Label(repeatingView.newChildId().bean.getId()));
                        repeatingView.add(new Label(repeatingView.newChildId().bean.getName()));
                        item.add(repeatingView);
                    }
                };

                add(dataView);
            }
        };
    }

}

DemoBean.java

package com.demo.pages;

public class DemoBean {
    public String id;
    public String name;

    public DemoBean(String id,String name) {
        this.id=id;this.name=name;
    }

    public String getId(){
        return this.id;
    }

    public void setId(String id){
        this.id=id;
    }

    public String getName(){
        return this.name;
    }

    public void setName(String name){
        this.name=name;
    }
}

我收到以下错误。

错误：绑定不匹配：DemoBean类型不是有效替代对于类型的有界参数 ListDataProvider方法add（Component ...）在类型中 MarkupContainer不适用于参数（Label）

Answer 1

如错误消息中所述：

您的DemoBean类不可序列化。
com.sun.xml.internal.ws.org.objectweb.asm.Label与wicket Label

wicket dataview中的错误，需要帮助来修复它

1 个答案: