Java 为 spring 表单标签元素设置类和其他属性
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setting class and other attributes for spring form tag element
提问by Aniket Thakur
I have the following page and it does not load
我有以下页面，但无法加载
<form:form action="/test.htm" method="post" commandName="demoForm" >
<div id="testSection" style="margin-top: 1.5%;margin-left: 3.5%;">
<span class="test-container">
<label>UserName</label>
<span class="test-container-right">
<form:input path="username" value="${UNAME}" class="text simpleTextField" maxlength="200" style="width:60%" disabled/>
</span>
</span>
<span style="width:auto; padding-left: 30%; padding-bottom: 4%; text-align:center; float:right; clear:both;">
<input type="submit" class="btn" style="width:auto;" value="Save" />
</span>
</div>
</form:form>
but when I change it to
但是当我把它改成
...
<span class="test-container-right">
<form:input path="username" />
</span>
...
it works and loads correctly. Why am I not allowed to set html properties for form:input spring tag. How can I achieve this? On inspecting the element it expands to be
它可以正常工作并正确加载。为什么我不允许为 form:input spring 标签设置 html 属性。我怎样才能做到这一点？在检查元素时，它扩展为
<input id="username" type="text" value="" name="username"></input>
I need to populate its value as well as provide it with a class and additional attributes like width.
我需要填充它的值并为它提供一个类和额外的属性，比如宽度。
采纳答案by Aniket Thakur
Ok I resolved some part of it. Looks like tags used inside form:input tag are different than regular html tags. All of them are listed here. For ex styleis cssStyle.
好的，我解决了其中的一部分。看起来 form:input 标签中使用的标签与常规 html 标签不同。所有这些都在这里列出。对于 exstyle是cssStyle。
So I change my code to
所以我将代码更改为
<form:input path="username" cssClass="text simpleTextField" maxlength="200" cssStyle="width:60%" disabled="true"/>
<form:input path="username" cssClass="text simpleTextField" maxlength="200" cssStyle="width:60%" disabled="true"/>
and now it works..
现在它起作用了..
I still don't know how to populate value in this input. These seems no equivalent of valuekeyword.
我仍然不知道如何在此输入中填充值。这些似乎不等同于value关键字。
回答by Santhosh
@Aniket You actually have an equivalent , consider in a case you have to populate the selectbox with the values from the model attribute . You can make use of itemsattribute.
@Aniket 您实际上有一个等效项，请考虑在您必须select使用模型属性中的值填充框的情况下。您可以使用items属性。
For instance ,
例如 ，
<tr>
<td>City :</td>
<td><form:select path="city" items="${cityList}" /></td>
</tr>
It will generate the select with the the list of objects.
cityListhere refers the object that has been sent from the server side.
它将生成带有对象列表的选择。
cityList这里指的是已经从服务器端发送过来的对象。
Hope this helps !
希望这可以帮助 ！
