使用DisplayTag Library Framework通过Struts2进行分页 [英] Pagination through Struts2 using DisplayTag Library Framework

问题描述

我想为我的应用程序的某些类应用分页，其中我使用spring，struts2&冬眠。这里我从welcome.jsp文件调用action类。它有以下代码：

I want to apply pagination for some class of my application, in which i am using spring, struts2 & hibernate. Here i am calling action class from welcome.jsp file. It has following code :

<s:form action="marketing/allCountry.action">  
         <s:submit value="Click"></s:submit>  
         </s:form>  

现在我的 allCountry.action java类具有以下代码：

Now my allCountry.action class of java has following code :

public String executeAction() throws Exception {
        try {
            countryList = new ArrayList<Country>();
            countryList = this.countrySecurityProcessor.findByAll(0, null, null, null, null, false, false, null, null, null, null, 0);
            System.out.println("countryList = "+countryList);
            return ActionSupport.SUCCESS;

        } catch (Exception ex) {
            return ActionSupport.ERROR;
        }
}

它正确获取数据，我通过打印确认countryList对象。但现在我从 SUCCESS 重定向到 country.jsp 。 country.jsp 的代码是：

It fetches the data properly, that i confirmed by printing countryList object. But now i am redirecting from SUCCESS to country.jsp. The code of country.jsp is :

<display:table list="countryList" requestURI="CountryAllAction" pagesize="3">
    <display:column property="id" title="ID" />
    <display:column property="name" />
</display:table>

现在，在执行我的应用程序时，我得到运行时错误，如：

Now at the time executing my application i am getting run time error like :

javax.servlet.ServletException：javax.servlet.ServletException：
Exception：[。FindookUtil]在对象类型$ b中查找属性id时出错$ bjava.lang.String。原因：未知属性'id'

javax.servlet.ServletException: javax.servlet.ServletException: Exception: [.LookupUtil] Error looking up property "id" in object type "java.lang.String". Cause: Unknown property 'id'

此类错误的解决方案是什么？

What is the solution to this type of error?

推荐答案

你需要在你的行动中为你的countryList设置一个getter。

You need to have a getter for your countryList in your action.

List<Country> countryList = new ArrayList<Country>();

public String executeAction() throws Exception {
  try {
     countryList = this.countrySecurityProcessor.findByAll(0, null, null, null, null, false, false, null, null, null, null, 0);
     System.out.println("countryList = "+countryList);
     return ActionSupport.SUCCESS;

  } catch (Exception ex) {
     return ActionSupport.ERROR;
  }

}

public List<Country> getCountryList() {
  return countryList;
}

这篇关于使用DisplayTag Library Framework通过Struts2进行分页的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！