C：是不是正在評估

Question

時，我有以下表單代碼：

<div class="form-group"> 
    <form:label class="pull-left" path="officeName">Office Name ${isInternational}</form:label> 
    <form:errors path="officeName" class="error pull-left"></form:errors> 
    <c:choose> 
     <c:when test="${isInternational}"> 
     <form:input path="officeName" type="text" class="form-control" id="officeName" placeholder="Enter Office Name"></form:input> 
     </c:when> 
     <c:otherwise> 
     <form:input path="officeName" type="text" class="form-control" id="officeName" placeholder="Enter Office Name" readonly="readonly" ></form:input> 
     </c:otherwise> 
    </c:choose> 

我總是可以得到Office Name ${isInternational}打印相應的值，但無論形式字段啓用的。謝謝。

編輯：disabled="disabled" also does not work

Answer 1

如果您正在使用的彈簧考慮標籤性能可能會有所不同

readonly(false/true) 

HTML Optional Attribute. Setting the value of this attribute to 'true' (without the quotes) will disable the HTML element. 

http://docs.spring.io/spring/docs/2.0.8/reference/spring-form.tld.html#spring-form.tld.input

我的意思是值必須是真或假，上面閱讀鏈接。