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嗨,我正在寫一個簡單的控制器類代碼參數值null被重定向到URL
public class OMTime1 {
public String xx { get; set; }
public PageReference continue1(){
String url='/apex/OneMoreTime?id='+ApexPages.currentPage().getParameters().get('id')+'&process='+xx;
PageReference page=new PageReference(url);
page.setRedirect(true);
return page;
}
}
和一個簡單的VF頁的代碼
<apex:page controller="OMTime1" >
<!-- Begin Default Content REMOVE THIS -->
<!-- End Default Content REMOVE THIS -->
<apex:form >
<apex:selectList id="chooseColor" value="{!xx}" size="1">
<apex:selectOption itemValue="1" itemLabel="Terminate Resource"/>
<apex:selectOption itemValue="2"
itemLabel="Change Resource Position at Same Location"/>
<apex:selectOption itemValue="3" itemLabel="Change Resource Position with in same Location "/>
<apex:selectOption itemValue="4" itemLabel="Change Resource Position to a Different Location"/>
</apex:selectList>
</apex:form>
<apex:form >
<apex:commandButton value="Continue" action="{!continue1}" id="theButton"/>
</apex:form>
</apex:page>
我的任務S於按鈕名稱時,用戶點擊作爲繼續頁面將重定向到它的url/apex/OneMoreTime?id = record_id & process = some_value some_value = 1,2,3或4 但當我點擊按鈕它重定向到/ apex/OneMoreTime?id = record_id & process = n ULL
爲什麼這個空在參數來我想重定向與選擇option.please的標籤值建議的方式如何解決它