DWR与Struts整合

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1.下載DWR Version 2
https://dwr.dev.java.net/files/documents/2427/47504/dwr.jar

2.安裝DWR,把dwr.jar放到WEB-INF/lib下

web.xml中加入DWRServlet & ActionServlet
其中的部分要特別注意,ActionServlet要先初始化,所以數字要比較小.

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action     org.apache.struts.action.ActionServlet             config       /WEB-INF/struts-config.xml                 debug       2          2           action     *.do           dwr-invoker     uk.ltd.getahead.dwr.DWRServlet            debug       true          10          dwr-invoker     /dwr/*

dwr.xml中加入struts的設定,其中formBean的參數的value值,會對應到struts-config.xml中的設定

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"struts" javascript="testFrm" >       "formBean" value="testActionForm" />

struts-config.xml

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"testActionForm" type="test.struts.testActionForm" />           "testActionForm" path="/testAction" scope="session" type="test.struts.testAction" validate="false" >       "display" path="/display.jsp" />           "ApplicationResources" />

testActionForm.java,getDate()會透過dwr,取得現在最新的日期

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package test.struts; import org.apache.struts.action.*; import java.util.*; public class testActionForm extends ActionForm {       private String strDate;      public void setStrDate(String strDate) {          this.strDate = strDate;     }       public String getStrDate() {          return strDate;     }      //dwr     public String getDate() {          Date date = new Date();         return date.toString();    } }

testAction.java

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package test.struts; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionForm; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForward; import org.apache.struts.action.Action; import org.apache.struts.action.*; public class testAction extends Action {      public ActionForward execute(ActionMapping mapping, ActionForm form,                                  HttpServletRequest request,                                  HttpServletResponse response) {           testActionForm actionForm = (testActionForm) form;        System.out.println(actionForm.getStrDate());         return mapping.findForward("display" );     } }

date.jsp,在form的部分,請用struts 的 tag library,我把改成後,無法正常的接受到值.

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<%@ page contentType="text/html; charset=Big5" %> <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %> <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>          "testAction.do" > date："strDate" size="30" > "button" onclick="refreshDate();" value="更新日期" />     送出

display.jsp

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<%@ page contentType="text/html; charset=Big5" %> <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %> %@page import="test.struts.*" % "#ffffff" > 您送出的日期: "testActionForm" property="strDate" />