Webwork2使用经验四则

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1.jar包中的taglib使用
WebLogic是不支持直接在jar包中使用taglib的,所以,一个在tomcat下运行正常的页面,在weblogic server下可能出错:
Parsing of JSP File '/globalList.jsp' failed:
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/globalList.jsp(2): Could not parse deployment descriptor: java.io.IOException: cannot resolve 'webwork' into a valid tag library
probably occurred due to an error in /globalList.jsp line 2:
<%@ taglib prefix="ww" uri="webwork"%>
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Tue Jan 11 15:34:02 CST 2005
解决办法:在web.xml中加入下面的内容

webwork
/WEB-INF/lib/webwork-2.1.jar

2.model的构造
webwork是不负责为你构造model的,所以你的action中应该这样构造model:
private ModelInfo modelInfo=new ModelInfo();
如果你写 private ModelInfo modelInfo会报错的.

3.使用ioc
webwork的ioc也需要你自己构造要组建的对象,所以你的model中应该这样写:
public class ModelInfo {
private List workList=new ArrayList();
private String actionTypeEnglish="";
private String actionType="";
private String actionHref="";
..........
如果不对List做初始化,系统会报NullPointerException

4.传递到view的model
必须自己为传递到view的model赋值:
ModelInfo model=service.getList(orgId);
   modelInfo.getWorkList().addAll(model.getWorkList());
   modelInfo.setActionHref(model.getActionHref());
   modelInfo.setActionType(model.getActionType());
   modelInfo.setActionTypeEnglish(model.getActionTypeEnglish());
不调用set方法,传递到view的model将是空的.