java Struts <s:select> 标签中的预选值?
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时间:2020-10-29 12:34:31 来源:igfitidea点击:
Preselect value in Struts <s:select> tag?
提问by Dan Burzo
I have this Struts tag:
我有这个 Struts 标签:
<s:select name="country.id"
list="countries"
listValue="name"
listKey="id"
headerValue="Select Country"
headerKey=""
label="Country" />
which outputs the following HTML code:
它输出以下 HTML 代码:
<select name="country.id" tabindex="12" id="registration_country">
<option value="">Select Country</option>
<option value="1">United States</option>
<option value="2">Afghanistan</option>
<option value="3">Albania</option>
<option value="4">Algeria</option>
...
<option value="192">Zambia</option>
<option value="193">Zimbabwe</option>
</select>
How do I specify that I want, for example, "Albania" to be preselected in the list?
例如,如何指定我希望在列表中预选“阿尔巴尼亚”?
回答by Peter Hilton
Use the valueattribute in the s:selecttag:
使用标签中的value属性s:select:
<s:select name="country.id"
list="countries"
listValue="name"
listKey="id"
headerValue="Select Country"
headerKey=""
label="Country"
value="3" />
回答by Boris Pavlovi?
Try this:
试试这个:
headerKey="3"

