Question

我有一个ActionForm（RevisionActionForm），我从DB2填充并在页面上显示。此表单包含各种字段和一个包含其他几个类和ArrayList的类。页面加载正常，一切都按照我的预期显示，但是当提交页面时，表单不再具有ArrayList元素（所有其他字段都按预期加载）。我假设问题源于ArrayList已构建的事实，但是没有存储要存储的值的元素。以下是相关的代码段（我省略了我认为无关紧要的内容以便减少这个帖子。）

JSP

<logic:notEmpty name="revisionBean" property="revisionData.reasonsData">
    <div>
        &nbsp;
    </div>
    <div style="vertical-align: top; text-align: left; font-size: 15px">
        <strong> 604 Information </strong>
    </div>
    <logic:iterate id="reqReas" name="revisionBean" property="revisionData.reasonsData" indexId="reqReasIdx">
        <div>
            <ao:text name="reqReas" property="reasonCodeId" indexed="true" 
                     label="Reason Code ID ${reqReasIdx+1}: " 
                     size="5" maxlength="5" disabled="true"/>
        </div>
        <div>
            <ao:text name="reqReas" property="priorityOrNum" indexed="true"
                     label="Priority Or Num ${reqReasIdx+1}: "
                     size="2" maxlength="2" disabled="true"/>
        </div>
    </logic:iterate>
</logic:notEmpty>

的ActionForm

public class RevisionActionForm extends BaseActionForm{

    /**
     * Transfer object for the Revision information.
     */
    private RevisionTO revisionData = new RevisionTO();

    public RevisionActionForm() {   
    }

    public RevisionTO getRevisionData(){
        return revisionData;
    }

    public void setRevisionData(RevisionTO revisionData){
        this.revisionData = revisionData;
    }   
}

RevisionTO（持有ArrayList）

public class RevisionTO implements Serializable {

    private ArrayList<RevisionReasonsTO> reasonsData = new ArrayList<RevisionReasonsTO>();

    public RevisionTO() {   
    }

    public ArrayList<RevisionReasonsTO> getReasonsData() {
        return reasonsData;
    }

    public RevisionReasonsTO getReasonData(int index) {
        if (reasonsData == null) {
            reasonsData = new ArrayList<RevisionReasonsTO>();
        }
        while (index >= reasonsData.size()) {
            reasonsData.add(new RevisionReasonsTO());
        }
        return reasonsData.get(index);
    }

    public void setReasonsData(ArrayList<RevisionReasonsTO> reasonsData) {
        this.reasonsData = reasonsData;
    }   
}

动作公共类RevisionAction扩展了Action {

    public ActionForward execute(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request, HttpServletResponse response) throws Exception{

        ActionForward forward = new ActionForward();
        HttpSession session = request.getSession(false);
        RevisionActionForm revisionForm = (RevisionActionForm) form;
}

我一直在网上进行研究，并在上周进行了实验而没有成功。如果这很明显，我很抱歉，但我对Java有点生疏，对Struts来说是新手。任何和所有的帮助将不胜感激。

Answer 1

将您的getReasonData(int index)和setReasonsData(ArrayList<RevisionReasonsTO> reasonsData)更改为getReqReas(....)和setReqReas

Struts 1中的ArrayList未填充ActionForm

1 个答案: