Question

我使用的JSP包含两个下拉列表，

问题圈：下拉列表
CPC：下拉列表

<tr>
            <td align="left" class="tC" width="30%"><bean:message
                    key="label.issueCircle" />:*</td>
            <td align="left" class="tE"><bean:define id="circleList"
                    name="sessionData" property="circleList" /> <html:select
                    property="circle" tabindex="9" styleClass="mediumDropInput"
                    style="width:45%" onchange="getCount()">
                    <html:options collection="circleList" property="value"
                        labelProperty="label" />
                </html:select></td>
        </tr>
        <tr>
            <td align="left" class="tC" width="30%"><bean:message
                    key="label.cpc" />:*</td>
            <td align="left" class="tE"><bean:define id="cpcList"
                    name="sessionData" property="cpcList" /> <html:select
                    property="cpc" tabindex="9" styleClass="mediumDropInput"
                    style="width:45%" onchange="getCount()">
                    <html:options collection="cpcList" property="value"
                        labelProperty="label" />
                </html:select></td>
        </tr>

每次点击费用的值取决于问题圈，并且不同圈子的值不同。

我正在使用AJAX来执行此功能。

<SCRIPT LANGUAGE="JavaScript">

 function getCount() {
        var url = "/NewBusiness/populateCircle.do";
        var value="Maharashtra";    //Hardcoded value
        var parameters="mah="+value;
        // Perform the AJAX request using a non-IE browser.
        if (window.XMLHttpRequest) {
          request = new XMLHttpRequest();

          // Register callback function that will be called when
          // the response is generated from the server.
          request.onreadystatechange = updateCount;

          try {
          request.open("POST", url, true);
          } catch (e) {
             alert("Unable to connect to server to retrieve count.");
          }
            request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
          request.send(parameters);
        // Perform the AJAX request using an IE browser.
        } else if (window.ActiveXObject) {
          request = new ActiveXObject("Microsoft.XMLHTTP");

          if (request) {
            // Register callback function that will be called when
            // the response is generated from the server.
            request.onreadystatechange = updateCount;

            request.open("GET", url, true);
            request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            request.send(parameters);
          }
        }
      }

 function updateCount() {
        if (request.readyState == 4) {
          if (request.status == 200) {
            var count = request.responseText;
            alert(request.responseText);    //How i can set this value to "CPC: Drop down list"
            alert(count);
          } else {
            alert("Unable to retrieve count from server.");
          }
        }
      }

我正在发送AJAX请求参数（issure Circle-value），我必须在其中设置下拉列表。我无法在我的动作类中填充'cpc'下拉列表，它需要引用我的整个页面。

sessionData.setCpcList(cpcList); //Not reflecting in JSP page...Needs to referesh page

不使用整个jsp页面参考如何才能实现此功能？

使用ajax在struts 1.x中设置下拉值

0 个答案: