确定一组 5 个下拉菜单中的哪一个已更改(在操作类中)
我很难弄清楚这个问题(尽管我知道它并不复杂)。
我在 jsp 页面上有 5 个下拉菜单。每个下拉菜单的 onChange 事件都调用相同的操作。 在操作文件中,我想知道 5 个下拉列表中的哪一个发生了更改(这导致了 onChange 事件)。
我知道这可能非常简单,但我无法做到。请指教。
这是包含下拉菜单的 jsp:
<s:form action="viewDayReport" id="dayReport">
<s:select label="Customer " name="customer" headerKey="0" headerValue="Select" list="customerList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Contact " name="contact" headerKey="0" headerValue="Select" list="contactList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Employee " name="employee" headerKey="0" headerValue="Select" list="employeeList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Stage " name="stage" headerKey="0" headerValue="Select" list="stageList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Type " name="type" headerKey="0" headerValue="Select" list="typeList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<sd:datetimepicker label="Date" name="date" displayFormat="dd/MM/yyyy"/>
<%--<s:reset value="Reset"/>--%>
<%--<s:submit value="View Report(s)"/>--%>
</s:form>
如果我错过了任何信息,请告诉我。
谢谢
Kanishk
编辑:
这是当前的表单,包含操作文件中的 5 个下拉菜单
<s:form action="viewDayReport" id="dayReport">
<s:select label="Customer " name="customer" headerKey="0" headerValue="Select" list="customerList" onchange="dojo.event.topic.publish('getLists');dojo.query('which').attr('value','customer');"/>
<s:select label="Contact " name="contact" headerKey="0" headerValue="Select" list="contactList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Employee " name="employee" headerKey="0" headerValue="Select" list="employeeList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Stage " name="stage" headerKey="0" headerValue="Select" list="stageList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Type " name="type" headerKey="0" headerValue="Select" list="typeList" onchange="dojo.event.topic.publish('getLists');"/>
<sd:datetimepicker label="Date" name="date" displayFormat="dd/MM/yyyy"/>
<s:hidden id="which"/>
<%--<s:reset value="Reset"/>--%>
<%--<s:submit value="View Report(s)"/>--%>
</s:form>
(我将长代码剪短并显示相关内容):
public class getLists extends ActionSupport {
private String which;
public String getWhich() {
return which;
}
public void setWhich(String which) {
this.which = which;
}
private String customer;
public String getCustomer() {
return customer;
}
public void setCustomer(String customer) {
this.customer = customer;
}
//other variables and functions
@Override
public String execute(){
System.out.println("getlists:"+which);
System.out.println("getlists:"+customer);
//other function calls
return "success";
}
}
变量 customer 打印得很好,但变量则不然。
在主题处理中,我所做的就是称为动作。这是代码:
<s:url id="scriptURL" action="getLists" />
<sd:div href="%{scriptURL}" listenTopics="getLists" formId="dayReport" showLoadingText="false" preload="false"></sd:div>
第二个主题类似。
在您所说的内容中,您能否解释一下以下代码的作用:
dojo.query('#which').attr('value', s);
以及我如何访问操作文件中的“值”?
I am having trouble figuring out this one (although I know its not complex).
I have 5 drop downs on a jsp page.The onChange event of every drop down calls the same action.
In the action file I want to know which of the 5 drop downs was changed (which caused the onChange event).
I know it may be darn simple, but am not able to do it. Please advice.
This is the jsp containing drop downs:
<s:form action="viewDayReport" id="dayReport">
<s:select label="Customer " name="customer" headerKey="0" headerValue="Select" list="customerList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Contact " name="contact" headerKey="0" headerValue="Select" list="contactList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Employee " name="employee" headerKey="0" headerValue="Select" list="employeeList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Stage " name="stage" headerKey="0" headerValue="Select" list="stageList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<s:select label="Type " name="type" headerKey="0" headerValue="Select" list="typeList" onchange="dojo.event.topic.publish('getLists');dojo.event.topic.publish('getDayReports');"/>
<sd:datetimepicker label="Date" name="date" displayFormat="dd/MM/yyyy"/>
<%--<s:reset value="Reset"/>--%>
<%--<s:submit value="View Report(s)"/>--%>
</s:form>
In case I have missed out on any info please tell.
Thanks
Kanishk
Edit:
This is the current form containing the 5 drop downs
<s:form action="viewDayReport" id="dayReport">
<s:select label="Customer " name="customer" headerKey="0" headerValue="Select" list="customerList" onchange="dojo.event.topic.publish('getLists');dojo.query('which').attr('value','customer');"/>
<s:select label="Contact " name="contact" headerKey="0" headerValue="Select" list="contactList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Employee " name="employee" headerKey="0" headerValue="Select" list="employeeList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Stage " name="stage" headerKey="0" headerValue="Select" list="stageList" onchange="dojo.event.topic.publish('getLists');"/>
<s:select label="Type " name="type" headerKey="0" headerValue="Select" list="typeList" onchange="dojo.event.topic.publish('getLists');"/>
<sd:datetimepicker label="Date" name="date" displayFormat="dd/MM/yyyy"/>
<s:hidden id="which"/>
<%--<s:reset value="Reset"/>--%>
<%--<s:submit value="View Report(s)"/>--%>
</s:form>
In the action file (I am cutting a long code short and showing what is relevant):
public class getLists extends ActionSupport {
private String which;
public String getWhich() {
return which;
}
public void setWhich(String which) {
this.which = which;
}
private String customer;
public String getCustomer() {
return customer;
}
public void setCustomer(String customer) {
this.customer = customer;
}
//other variables and functions
@Override
public String execute(){
System.out.println("getlists:"+which);
System.out.println("getlists:"+customer);
//other function calls
return "success";
}
}
The variable customer gets printed fine but the variable which does not.
In topic handling, all I have done is, called an action. This is the code:
<s:url id="scriptURL" action="getLists" />
<sd:div href="%{scriptURL}" listenTopics="getLists" formId="dayReport" showLoadingText="false" preload="false"></sd:div>
Similarly for the 2nd topic.
In what you have told, can you please explain what does the following code do:
dojo.query('#which').attr('value', s);
And how am I gonna access "value" in action file?
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如果没有主题处理代码,就很难判断,但有两种可能的解决方案:
1)保留会话中每个字段的值并比较以查看哪些更改了
2)在“包装器”
onchange
功能(见下文)Without the topic-handling code it's harder to tell, but two possible solutions:
1) Keep the values of each field in session and compare to see which changed
2) Set a hidden field in a "wrapper"
onchange
function (see below)