Java 如何用 List<String> 填充 <form:select>？
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How to populate <form:select> with List<String>?
提问by Dragan
I have a List<String>in the controller which im passing to the view. I need to populate <form:select>with that data.
我List<String>在控制器中有一个我传递给视图。我需要填充<form:select>这些数据。
I tried setting the itemValueattribute to "name"but that did not work.
我尝试将itemValue属性设置为，"name"但这不起作用。
采纳答案by bsimic
You can do the following:
您可以执行以下操作：
<form:select path="selectName">
<form:option value="0" label="Select an Option" />
<form:options items="${nameOfList}" />
</form:select>
By providing only the items attribute to the form:options tag, it should make the value and label the value of each String in your list.
通过仅向 form:options 标签提供 items 属性，它应该为列表中的每个字符串的值设置值和标签。
回答by Rashedul.Rubel
you can also try as follows:
你也可以尝试如下：
<form:select path="country">
<form:option value="NONE" label="--- Select ---" />
<form:options items="${countryList}" itemValue="value" itemLabel="description"/>
</form:select>
回答by José Mendes
protected Map referenceData(HttpServletRequest request) throws Exception {
Map referenceData = new HashMap();
Map<String,String> country = new LinkedHashMap<String,String>();
country.put("US", "United Stated");
country.put("CHINA", "China");
country.put("SG", "Singapore");
country.put("MY", "Malaysia");
referenceData.put("countryList", country);
}
}
Then
然后
<form:select path="country" items="${countryList}" />
